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Osco Motors
OSCO Motors Corp. has been in the marine business since 1932, supplying high quality, reasonably priced after market manifolds and gaskets. Today OSCO Motors Corp. is a recognized leader in providing marine grade manifolds and exhaust accessories. OSCO Motor Corp. currently makes aftermarket exhaust parts for Mercruiser, Crusader, Chrysler, Barr, Indmar, Marine Power, Pleasurecraft, Volvo, OMC, and Chris Craft. You can find over 480 OSCO Motor Corp.'s marine engine parts and products at Go2marine.
MFR
Part#
MFR#
Description
Price

305/350 Log style manifold
Osco Motors 89176 2441 Exhaust Manifold - GM 305 - 350 V8, 2441 $166.17
Osco Motors 89177 2442 Exhaust Manifold - GM 305 - 350 V8, 2442 $166.17

4 Cylinder Chev Exhaust Manifolds
Osco Motors 99836 MO4-HOK Adapter Plate Kit, 181 c.i. & 3.0L GM Engines $119.23
Osco Motors 89513 MO4-HOK Exhaust Manifold Adapter Plate Kit, MO4-HOK $119.23
Osco Motors 89457 ME153-LR Exhaust Manifold Assembly - GM 153 CID Four Cylinder, ME153-LR $264.71
Osco Motors 89477 ME153-LS Manifold Assembly - GM 153 Four Cylinder, ME153-LS $264.71

4.3L Chevy V6
Osco Motors 90680 CSCR618 Exhaust Manifold - 229 CID GM V6 3.8L, CSCR618 $178.30
Osco Motors 153929 OMC643-KIT Exhaust Manifold Kit - Replaces 1986-90 OMC 4.3L V6 Manifold Riser $916.00
Osco Motors 90688 CRR-2-MK Exhaust Manifold Mounting Kit, CRR-2-MK $7.82
Osco Motors 90690 CRR-2-MK-FW Exhaust Manifold Mounting Kit, CRR-2-MK-FW $7.82
Osco Motors 90681 CSCR-MK Exhaust Manifold Mounting Kit, CSCR-MK $16.99
Osco Motors 90684 CRR-2 Exhaust Manifold Riser, 3" Outlet, CRR-2 $112.50
Osco Motors 90689 CRR-2-G Exhaust Manifold to Riser Gasket, CRR-2-G $5.21
Osco Motors 90693 CRR-2-G-FW Exhaust Manifold to Riser Gasket, CRR-2-G-FW $5.21

Big Block Chev. V-8
Osco Motors 89287 1812-8 Exhaust Manifold 8-1/2" Riser Assy, 1812-8 $356.26
Osco Motors 90749 BE Exhaust Manifold Adaption End Plate, BE $42.71
Osco Motors 90750 RB Exhaust Manifold Adaption End Plate, RB $33.86
Osco Motors 90747 BW Exhaust Manifold Conversion Front Plate, BW $34.90
Osco Motors 89288 1812 Exhaust Manifold Lower Elbow, 1812 $136.53
Osco Motors 90700 CRR-MK Exhaust Manifold Mounting Kit, CRR-MK $7.80
Osco Motors 90701 CRR-MK-FW Exhaust Manifold Mounting Kit, CRR-MK-FW $7.80
Osco Motors 90709 CWCR-MK Exhaust Manifold Mounting Kit, CWCR-MK $15.30
Osco Motors 90789 52A Exhaust Manifold Riser Elbow, 52A $46.69
Osco Motors 90791 52B Exhaust Manifold Riser Elbow, 52B $48.80
Osco Motors 90806 52C Exhaust Manifold Riser Elbow, 52C $45.84
Osco Motors 89293 1800-K Exhaust Manifold Riser Mounting Kit, 1800-K $16.36
Osco Motors 89284 1815-A Exhaust Manifold Riser Water Pipe, 1815-A $7.14
Osco Motors 90698 CRR-1 Exhaust Manifold Riser, 3" Outlet, CRR-1 $110.58
Osco Motors 90699 CRR-3 Exhaust Manifold Riser, 3" Outlet, CRR-3 $117.30
Osco Motors 90705 CRR-G-SP Exhaust Manifold Stainless Plate, CRR-G-SP $9.90
Osco Motors 90703 CRR-G Exhaust Manifold to Riser Gasket, CRR-G $4.39
Osco Motors 90704 CRR-G-FW Exhaust Manifold to Riser Gasket, CRR-G-FW $7.52

Buick V-6
Osco Motors 93961 CRR80x2.375 80° Exahust elbow, 3 " X 2.375" $37.50
Osco Motors 89287 1812-8 Exhaust Manifold 8-1/2" Riser Assy, 1812-8 $356.26
Osco Motors 89305 AE Exhaust Manifold Adaption End Plate, AE $33.46
Osco Motors 89306 RA Exhaust Manifold Adaption End Plate, RA $31.77
Osco Motors 89307 AG Exhaust Manifold End Plate Gasket, AG $4.39
Osco Motors 89288 1812 Exhaust Manifold Lower Elbow, 1812 $136.53
Osco Motors 90789 52A Exhaust Manifold Riser Elbow, 52A $46.69
Osco Motors 90791 52B Exhaust Manifold Riser Elbow, 52B $48.80
Osco Motors 90806 52C Exhaust Manifold Riser Elbow, 52C $45.84
Osco Motors 90809 RG Exhaust Manifold Riser Gasket, RG $4.16
Osco Motors 89293 1800-K Exhaust Manifold Riser Mounting Kit, 1800-K $16.36
Osco Motors 89284 1815-A Exhaust Manifold Riser Water Pipe, 1815-A $7.14

Carburetors & Parts
Osco Motors 89458 ME-LR Exhaust Manifold Carburetor Mounting Plate, ME-LR $66.66

Chevrolet Manifold Gaskets
Osco Motors 90238 CS-GH Exhaust Manifold to Cylinder Head Gasket, CS-GH $8.34
Osco Motors 89464 CY4-GH Exhaust Manifold to Cylinder Head Gasket, CY4-GH $8.34
Osco Motors 89491 MO4-GH Exhaust Manifold to Cylinder Head Gasket, MO4-GH $9.37

Cooling Parts
Osco Motors 111948 CV55 Thermostat Housing Assembly, GM Small Block, CV55 $85.68

Elbow & Riser Gaskets
Osco Motors 89528 8561-G Elbow and Reservoir Gasket, 8561-G $15.08
Osco Motors 89524 0879-MK Elbow and Reservoir Mounting Kit, 0879-MK $10.41
Osco Motors 90244 8503-GR Exhaust Manifold Gasket Restrictor, 8503-GR $4.39

Elbows & Risers
Osco Motors 85095 7387 Exhaust Elbow Lower Swivel, 3" Outlet - 7387 $64.57
Osco Motors 85096 7624 Exhaust Elbow Lower Swivel, 4" Outlet - 7624 $64.57
Osco Motors 85093 6562-MK Exhaust Elbow Mounting Kit, 6562-MK $8.98
Osco Motors 89215 7087-MK Exhaust Elbow and Extension Mounting Kit, 7087-MK $39.71
Osco Motors 155901 CRR45x3.5 Exhaust Elbow and Hose Adaptor Kit, Osco 45 degree 3.5", for GM Big Block V8 $53.08
Osco Motors 85087 7386 Exhaust Elbow w/ Jacketed Upper for Swivel, 7386 $121.15
Osco Motors 85084 8068 Exhaust Elbow, 3" Outlet, GM Chevrolet Small Block V8 - 8068 $119.23
Osco Motors 85080 7924 Exhaust Elbow, 4" Outlet, GM Chevrolet V8 - 7924 $126.93
Osco Motors 90788 4EXT-12 Exhaust Manifold 4" Spacer, 4EXT-12 $125.97
Osco Motors 89273 794 Exhaust Manifold Elbow, 794 $107.69
Osco Motors 89272 639 Exhaust Manifold Elbow, 90 Degree, 639 $101.54
Osco Motors 89211 0402 Exhaust Manifold Lower Elbow, 0402 $140.37
Osco Motors 89378 9234 Exhaust Manifold Lower Elbow, 9234 $134.62
Osco Motors 90609 2018 Exhaust Manifold Riser, 3" Outlet, 2018 $108.65
Osco Motors 90562 29001 Exhaust Manifold Riser, 3", 29001 $103.85
Osco Motors 85453 9015 Exhaust Manifold Riser, 4" Outlet, 9015 $163.46
Osco Motors 85040 7772 Exhaust Manifold Riser, 4", GM Chevrolet Small Block V8 - 7772 $136.53
Osco Motors 89276 689 Exhaust Manifold Riser, 689 $116.34
Osco Motors 85042 7169 Exhaust Manifold Riser, 8", GM Chevrolet Small Block V8 - 7169 $134.62
Osco Motors 89390 8128 Exhaust Manifold Spacer, 4", 8128 $120.19
Osco Motors 89213 4-EXT Exhaust Manifold Swivel Exhaust Extension, 4-EXT $104.81
Osco Motors 89214 5639 Exhaust Manifold Swivel Riser, 5639 $218.75
Osco Motors 85047 7169-MK Exhaust Riser Mounting Kit, 7169-MK $55.94
Osco Motors 85041 7772-MK Exhaust Riser Mounting Kit, 7772-MK $50.82
Osco Motors 85454 9015-MK Exhaust Riser Mounting Kit, 9015-MK $17.51
Osco Motors 89217 7087-OR Exhaust Riser O-Ring Set, 7087-OR $9.36
Osco Motors 89394 8128-MK Exhaust Spacer Mounting Kit, 8128-MK $37.15

Elbows, Spacers & Plugs
Osco Motors 89519 879 Exhaust Manifold Elbow & Reservoir, 0879 $236.22
Osco Motors 89526 8561 Exhaust Manifold Elbow & Reservoir, 8561 $234.38
Osco Motors 90281 1851 Exhaust Manifold Spacer, 3", 1851 $76.04
Osco Motors 90247 3320 Exhaust Manifold Spacer, 3", 3320 $72.91
Osco Motors 90270 3322 Exhaust Manifold Spacer, 6", 3322 $75.00

Engine Mounts
Osco Motors 95426 TO9PR Transmission Mounts, T09PR $81.96

Exhaust Gaskets
Osco Motors 85094 6562 Exhaust Elbow Gasket, 6562 $4.16
Osco Motors 89389 9015-G Exhaust Manifold Gasket, 9015-G $4.39
Osco Motors 89388 CV-GH Exhaust Manifold Gasket, CV-GH $9.37
Osco Motors 90655 7056-MK Exhaust Manifold Mounting Kit, Gasket & Hardware, 7056-MK $15.10
Osco Motors 85452 8243-MK Exhaust Manifold Mounting Kit, Osco 8243, 8243-MK $15.30
Osco Motors 89380 8125-MK Exhaust Manifold Mounting Kit, for Osco 8125, 8125-MK $15.30
Osco Motors 85078 6108 Exhaust Riser Gasket, 6108 $4.16
Osco Motors 85097 7296 Stainless Steel Exhaust Block Off Plate, Crusader, 7296 $9.90
Osco Motors 89395 8124 Stainless Steel Exhaust Block Off Plate, Crusader, 8124 $9.90

Exhaust Gaskets & Mounting Kits
Osco Motors 89215 7087-MK Exhaust Elbow and Extension Mounting Kit, 7087-MK $39.71
Osco Motors 89259 480 Exhaust End Plate Gasket, 480 $4.16
Osco Motors 89256 5639-CL Exhaust Manifold Clamp Set, 5639-CL $20.84
Osco Motors 89210 106-T Exhaust Manifold Front Plate W/Fitting Hole, 106-T $34.90
Osco Motors 89209 106 Exhaust Manifold Front Plate W/O Fitting Hole, 106 $28.64
Osco Motors 89348 150 Exhaust Manifold Front Plate, 150 $29.16
Osco Motors 89192 826-GH Exhaust Manifold Gasket Set, 826-GH $8.54
Osco Motors 89190 826-MK Exhaust Manifold Gasket and Mounting Kit, 826-MK $15.30
Osco Motors 89377 121 Exhaust Manifold Gasket, 121 $4.89
Osco Motors 89261 480-FW Exhaust Manifold Gasket, 480-FW $7.49
Osco Motors 89334 7081-GH Exhaust Manifold Gasket, 7081-GH $8.54
Osco Motors 89191 826-MK-SS Exhaust Manifold Mounting Kit w/ nuts, 826-MK-SS $31.67
Osco Motors 89375 121-MK Exhaust Manifold Mounting Kit, 121-MK $7.71
Osco Motors 89257 480-MK Exhaust Manifold Mounting Kit, 480-MK $9.64
Osco Motors 89260 480-MK-FW Exhaust Manifold Mounting Kit, 480-MK-FW $9.64
Osco Motors 89333 7081-MK Exhaust Manifold Mounting Kit, 7081-MK $19.26
Osco Motors 89203 826-SS Exhaust Manifold Single Stud and Nut, 826-SS $4.17
Osco Motors 89216 7087 Exhaust Manifold Stainless Sleeve, 7087 $16.66
Osco Motors 89217 7087-OR Exhaust Riser O-Ring Set, 7087-OR $9.36

Exhaust Manifold End Caps & Plates
Osco Motors 95822 8503SS Exhaust Manifold Block Off Plate, 8503SS $9.90
Osco Motors 89494 60252 Exhaust Manifold Front Plate, 60252 $27.60
Osco Motors 89469 MWS Exhaust Manifold Front Plate, MWS $18.75
Osco Motors 89473 MWF Exhaust Manifold Rear Plate, MWF $18.23
Osco Motors 89496 60252-MK Front Plate Mounting Kit, 60252-MK $7.71
Osco Motors 89500 48043 Gasket For End Plate, 48043 $3.33

Exhaust Manifolds
Osco Motors 89189 826 Exhaust Manifold 318-360 CID Small Block V8, 826 $229.41
Osco Motors 90788 4EXT-12 Exhaust Manifold 4" Spacer, 4EXT-12 $125.97
Osco Motors 89210 106-T Exhaust Manifold Front Plate W/Fitting Hole, 106-T $34.90
Osco Motors 89209 106 Exhaust Manifold Front Plate W/O Fitting Hole, 106 $28.64
Osco Motors 89375 121-MK Exhaust Manifold Mounting Kit, 121-MK $7.71
Osco Motors 89257 480-MK Exhaust Manifold Mounting Kit, 480-MK $9.64
Osco Motors 89260 480-MK-FW Exhaust Manifold Mounting Kit, 480-MK-FW $9.64
Osco Motors 89333 7081-MK Exhaust Manifold Mounting Kit, 7081-MK $19.26
Osco Motors 89216 7087 Exhaust Manifold Stainless Sleeve, 7087 $16.66
Osco Motors 89269 F66CS Exhaust Manifold Straight Water Fitting, 3/4" NPT x 3/4" Hose Barb, F66CS $8.34
Osco Motors 89345 424 Exhaust Manifold Water Distribution Tube, 424 $57.29
Osco Motors 89265 F68CS Exhaust Manifold Water Fitting, 3/4" NPT x 1" Hose Barb, F68CS $9.36
Osco Motors 89264 F68C9 Exhaust Manifold Water Fitting, 90° Elbow 3/4" MPT x 1" Hose Barb, F68C9 $9.36
Osco Motors 89332 7081 Exhaust Manifold, Big Block V8 383 - 440 CID, 7081 $356.62

Exhaust Manifolds & Gaskets
Osco Motors 90566 M0002 Exhaust Manifold Gasket, M0002 $4.39
Osco Motors 90561 28001-MK Exhaust Manifold Mounting Kit, 28001-MK $17.29
Osco Motors 90565 29001-MK Exhaust Manifold Mounting Kit, 29001-MK $8.75
Osco Motors 90560 28001 Pleasurecraft Exhaust Manifold, Small Block Ford 302 - 351 V8, 28001 $180.61

Exhaust Manifolds & Mounting Kits
Osco Motors 90654 7056 Chris Craft Exhaust Manifold, 283 - 350 V8, 7056 $242.65
Osco Motors 85079 NWK Exhaust Elbow Nut & Washer Kit, NWK $11.96
Osco Motors 85452 8243-MK Exhaust Manifold Mounting Kit, Osco 8243, 8243-MK $15.30
Osco Motors 89380 8125-MK Exhaust Manifold Mounting Kit, for Osco 8125, 8125-MK $15.30
Osco Motors 89390 8128 Exhaust Manifold Spacer, 4", 8128 $120.19
Osco Motors 85098 7854 Exhaust Manifold Water Fitting, 90 Degree Elbow, Crusader 97854 - 7854 $13.59
Osco Motors 89379 8125 Exhaust Manifold, Crusader, Big Block GM 454 - 502 V8, 8125 $256.44
Osco Motors 85481 8243 Exhaust Manifold, Crusader, Small Block GM Chevrolet 305 - 350 V8, 8243 $235.29
Osco Motors 89394 8128-MK Exhaust Spacer Mounting Kit, 8128-MK $37.15
Osco Motors 85034 775-MK-A Manifold Mounting Kit - W/ Alt. Bracket, 775-MK-A $14.79
Osco Motors 85025 775-MK Manifold Mounting Kit - W/O Alt. Bracket, 775-MK $12.56
Osco Motors 89399 799-MK Manifold Mounting Kit, 799-MK $12.82
Osco Motors 85024 7753 Port Exhaust Manifold for GM 305 - 350, 7753 $188.41
Osco Motors 89397 7993 Port Exhaust Manifold for GM 454, 7993 $238.97
Osco Motors 85023 7752 Starboard Exhaust Manifold for GM 305 - 350, 7752 $188.41
Osco Motors 89396 7992 Starboard Exhaust Manifold for GM 454, 7992 $238.97

Exhaust Mounting Hardware
Osco Motors 89527 8561-MK Elbow and Reservoir Mounting Kit , 8561-MK $17.49
Osco Motors 90246 8503-GO Exhaust Manifold Gasket Open, 8503-GO $4.39
Osco Motors 90238 CS-GH Exhaust Manifold to Cylinder Head Gasket, CS-GH $8.34

Exhaust Parts
Osco Motors 95971 CVBC-A Alternator Bracket, Volvo Applications $30.73
Osco Motors 90652 CW994 Exhaust Manifold - Big Block GM 454 V8, CW994 $201.29
Osco Motors 90603 994 Exhaust Manifold - Small Block GM V8, 994 $172.79
Osco Motors 89388 CV-GH Exhaust Manifold Gasket, CV-GH $9.37
Osco Motors 90612 992-MK Exhaust Manifold Mounting Kit, 992-MK $7.71
Osco Motors 90614 992-MK-FW Exhaust Manifold Mounting Kit, 992-MK-FW $7.71
Osco Motors 90604 994-MK Exhaust Manifold Mounting Kit, 994-MK $15.30
Osco Motors 90653 CW994-MK Exhaust Manifold Mounting Kit, CW994-MK $15.30
Osco Motors 160848 992-SS Exhaust Manifold Riser Block Off Plate, 992-SS $9.91
Osco Motors 90613 992-G Exhaust Manifold Riser Gasket, 992-G $7.66
Osco Motors 90616 992-G-FW Exhaust Manifold Riser Gasket, 992-G-FW $6.43
Osco Motors 90609 2018 Exhaust Manifold Riser, 3" Outlet, 2018 $108.65
Osco Motors 90608 992 Exhaust Manifold Riser, 3" Outlet, 992 $119.23
Osco Motors 90607 99204 Exhaust Manifold Riser, 4" Outlet, 10°, 99204 $120.19
Osco Motors 89521 99204 Exhaust Manifold Riser, 4" outlet, 10°, 99204 $120.19
Osco Motors 90592 56879 Exhaust Manifold Riser, 95mm Outlet, 56879 $107.69
Osco Motors 90611 9943S Exhaust Manifold Spacer, 3", 9943S $87.50
Osco Motors 89269 F66CS Exhaust Manifold Straight Water Fitting, 3/4" NPT x 3/4" Hose Barb, F66CS $8.34
Osco Motors 89265 F68CS Exhaust Manifold Water Fitting, 3/4" NPT x 1" Hose Barb, F68CS $9.36
Osco Motors 89264 F68C9 Exhaust Manifold Water Fitting, 90° Elbow 3/4" MPT x 1" Hose Barb, F68C9 $9.36
Osco Motors 90593 56879-MK Exhaust Riser Mounting Kit, 56879-MK $8.75
Osco Motors 95969 CRR-VOLVO Volvo Exhaust Elbow Kit $58.33
Osco Motors 90588 5805 Volvo Exhaust Manifold - Small Block GM, 5805 $155.88
Osco Motors 88409 VO418 Volvo Exhaust Manifold, VO418 $231.62
Osco Motors 90585 VO-ZP Zinc Pencil, VO-ZP $9.37

Fittings, Elbows & Parts
Osco Motors 99337 CRRHAx2.375 Cast Iron Elbow and Hose Adapter Kit - CRRHAx2.375 $37.44
Osco Motors 99327 CRRHAx3.5 Cast Iron Elbow and Hose Adapter Kit - CRRHAx3.5 $37.44
Osco Motors 93593 CRR80x3 Exahust elbow, 80° , 3"Dia $37.50
Osco Motors 115802 453030 Exhaust Elbow 45 degree x 3" $32.95
Osco Motors 155901 CRR45x3.5 Exhaust Elbow and Hose Adaptor Kit, Osco 45 degree 3.5", for GM Big Block V8 $53.08
Osco Motors 155234 18200 Exhaust Elbow, 18200, 30° 2-3/8" Outlet $81.84
Osco Motors 92469 18250 Exhaust Elbow, 18250, 30° w/3" Outlet $92.31
Osco Motors 94082 3035HA Exhaust hose adapter 3-1/2" to 3" $34.01

Gasket Materials & Kits
Osco Motors 90656 05944 Exhaust Manifold End Plate Gasket, 05944 $4.67

Indmar Inboard Engine Parts
Osco Motors 90617 FL994 Exhaust Manifold - Small Block Ford V8, FL994 $209.55
Osco Motors 90603 994 Exhaust Manifold - Small Block GM V8, 994 $172.79
Osco Motors 90612 992-MK Exhaust Manifold Mounting Kit, 992-MK $7.71
Osco Motors 90614 992-MK-FW Exhaust Manifold Mounting Kit, 992-MK-FW $7.71
Osco Motors 90604 994-MK Exhaust Manifold Mounting Kit, 994-MK $15.30
Osco Motors 89517 FL994-MK Exhaust Manifold Mounting Kit, FL994-MK $15.30
Osco Motors 160848 992-SS Exhaust Manifold Riser Block Off Plate, 992-SS $9.91
Osco Motors 90613 992-G Exhaust Manifold Riser Gasket, 992-G $7.66
Osco Motors 90616 992-G-FW Exhaust Manifold Riser Gasket, 992-G-FW $6.43
Osco Motors 90609 2018 Exhaust Manifold Riser, 3" Outlet, 2018 $108.65
Osco Motors 89521 99204 Exhaust Manifold Riser, 4" outlet, 10°, 99204 $120.19
Osco Motors 90611 9943S Exhaust Manifold Spacer, 3", 9943S $87.50
Osco Motors 89269 F66CS Exhaust Manifold Straight Water Fitting, 3/4" NPT x 3/4" Hose Barb, F66CS $8.34
Osco Motors 89265 F68CS Exhaust Manifold Water Fitting, 3/4" NPT x 1" Hose Barb, F68CS $9.36
Osco Motors 89264 F68C9 Exhaust Manifold Water Fitting, 90° Elbow 3/4" MPT x 1" Hose Barb, F68C9 $9.36
Osco Motors 89518 FL-GH Exhaust Manifold to Head Gasket, Ford, FL-GH $8.34

Inline 6 Chev Exhaust Manifolds
Osco Motors 93251 MO618-63 Exhaust Manifold Assembly - GM 250 Six Cylinder, 165 Hp. MO618-65 $547.70
Osco Motors 90189 MO618-55 Exhaust Manifold Assembly, MO618-55 $508.57

Manifold & Exhaust Gaskets
Osco Motors 89516 MO4-HO-GH Adapter Plate gasket, MO4-HO-GH $9.37
Osco Motors 90209 58764 Carburetor Adapter to Manifold Gasket, 58764 $4.39
Osco Motors 89461 ME-G Carburetor Mounting Plate Gasket, ME-G $5.41
Osco Motors 89525 08561-G Elbow and Reservoir Gasket, 08561-G $15.08
Osco Motors 89528 8561-G Elbow and Reservoir Gasket, 8561-G $15.08
Osco Motors 89524 0879-MK Elbow and Reservoir Mounting Kit, 0879-MK $10.41
Osco Motors 89514 MO4-HO Exhaust Manifold Adapter Plate, MO4-HO $87.50
Osco Motors 90245 8503-GB Exhaust Manifold Gasket Blocked, 8503-GB $7.52
Osco Motors 90246 8503-GO Exhaust Manifold Gasket Open, 8503-GO $4.39
Osco Motors 90244 8503-GR Exhaust Manifold Gasket Restrictor, 8503-GR $4.39
Osco Motors 90206 8759-MK Exhaust Manifold Mounting Kit, 8759-MK $43.00
Osco Motors 90237 9745-MK Exhaust Manifold Mounting Kit, 9745-MK $15.10
Osco Motors 90278 560-MK Exhaust Manifold Mounting Kit, Ford 302-351,560-MK $15.41
Osco Motors 90273 3320-MK Exhaust Manifold Spacer Kit, 6", 3320-MK $24.96
Osco Motors 90274 3320-MK-X Exhaust Manifold Spacer Kit, 6", 3320-MK-X $30.63
Osco Motors 90282 1851-MK Exhaust Manifold Spacer Mounting Kit, 1851-MK $23.32
Osco Motors 90280 60207 Exhaust Manifold Stainless Plate, 60207 $9.87
Osco Motors 90238 CS-GH Exhaust Manifold to Cylinder Head Gasket, CS-GH $8.34
Osco Motors 89464 CY4-GH Exhaust Manifold to Cylinder Head Gasket, CY4-GH $8.34
Osco Motors 89491 MO4-GH Exhaust Manifold to Cylinder Head Gasket, MO4-GH $9.37
Osco Motors 90271 3322-MK Exhaust Spacer Gasket Kit, 3322-MK $8.75
Osco Motors 89496 60252-MK Front Plate Mounting Kit, 60252-MK $7.71
Osco Motors 90290 7214-MK Manifold Mounting Kit, 7214-MK $14.57
Osco Motors 90302 9011A-MK Manifold Mounting Kit, 9011A-MK $15.30
Osco Motors 90240 4354-MK Mounting Kit Riser, 4354-MK $23.78
Osco Motors 90243 8503A-MK Mounting Kit Riser, 8503A-MK $8.75
Osco Motors 89475 MWF-G Rear Plate Gasket, MWF-G $4.16
Osco Motors 89509 2076-MK Riser Mounting Kit, 2076-MK $6.76
Osco Motors 89502 6325-MK Riser Mounting Kit, 6325-MK $7.71
Osco Motors 90279 6371-MK-SP Riser Mounting Kit, 6371-MK-SP $20.30

Mercruiser Risers
Osco Motors 90191 MO65538 Exhaust Manifold Riser Adapter, MO65538 $53.65
Osco Motors 90197 MO66351 Exhaust Manifold Riser Adapter, MO66351 $53.64
Osco Motors 89501 6325 Exhaust Manifold Riser, 3", 6325 $126.92
Osco Motors 90242 8503A Exhaust Manifold Riser, 3", 8503A $123.07
Osco Motors 89507 2076 Exhaust Manifold Riser, 4", 2076 $150.00
Osco Motors 90239 4354 Exhaust Manifold Riser, 4", 4354 $130.00
Osco Motors 89465 5538 Exhaust Manifold Riser, 5538 $128.37
Osco Motors 90199 6351 Exhaust Manifold Riser, 6351 $127.88
Osco Motors 90200 6771 Exhaust Manifold Riser, 6771 $171.15
Osco Motors 89467 5538-MK Mounting Kit for Exhaust Manifold Riser, 5538-MK $7.91

Mercury Manifold & Exhaust Gaskets
Osco Motors 89468 5538-G Exhaust Manifold Riser Gasket, 5538-G $4.16
Osco Motors 89472 MWS-G Front Plate Gasket, MWS-G $4.16
Osco Motors 90202 6371-MK Riser Mounting Kit, 6371-MK $7.71

OMC 4 Cylinder Manifolds
Osco Motors 89514 MO4-HO Exhaust Manifold Adapter Plate, MO4-HO $87.50

OMC 6 Cylinder Manifolds
Osco Motors 153929 OMC643-KIT Exhaust Manifold Kit - Replaces 1986-90 OMC 4.3L V6 Manifold Riser $916.00
Osco Motors 89134 MO618-01 OMC Exhaust Manifold, GM 250 CID In-Line 6 Cylinder, MO618-01 $559.36

OMC Exhaust Hardware
Osco Motors 89180 244-MK Exhaust Manifold Mounting Kit, 244-MK $32.82

OMC Exhaust Manifold Gaskets
Osco Motors 99836 MO4-HOK Adapter Plate Kit, 181 c.i. & 3.0L GM Engines $119.23
Osco Motors 89514 MO4-HO Exhaust Manifold Adapter Plate, MO4-HO $87.50

OMC Fuel Parts
Osco Motors 89142 MO601 Exhaust Manifold Throttle Linkage Adapter, MO601 $13.02

OMC Manifold & Exhaust Gaskets
Osco Motors 89139 BG Exhaust Manifold End Plate Gasket for MO618-01, BG $4.88
Osco Motors 89180 244-MK Exhaust Manifold Mounting Kit, 244-MK $32.82
Osco Motors 89149 0188-G Exhaust Manifold Riser Gasket, 0188-G $4.16
Osco Motors 89172 50456-G Exhaust Manifold Riser Gasket, 50456-G $4.39
Osco Motors 89154 9863-G Exhaust Manifold Riser Gasket, 9863-G $5.49
Osco Motors 89171 50456-MK Exhaust Manifold Riser Mounting Kit, 50456-MK $16.66
Osco Motors 89153 9863-MK Exhaust Manifold Riser Mounting Kit, 9863-MK $8.34
Osco Motors 89144 CY6-GH Manifold to Engine Gasket, OMC 907932, CY6-GH $20.16
Osco Motors 89141 MO618-G Riser Adapter to Manifold Gasket, MO618-G $5.49
Osco Motors 89143 CY-MG Rochester Two Barrel Gasket, CY-MG $4.39

OMC Risers & Elbows
Osco Motors 89148 0188-MK Exhaust Manifold Riser Mounting Kit, 0188-MK $6.78
Osco Motors 89153 9863-MK Exhaust Manifold Riser Mounting Kit, 9863-MK $8.34
Osco Motors 89169 9863-T Exhaust Manifold Riser with Water Inlet, 9863-T $141.35
Osco Motors 89145 0188 Exhaust Manifold Riser, 0188 $134.62
Osco Motors 89170 50456 Exhaust Manifold Riser, 50456 $141.35
Osco Motors 90199 6351 Exhaust Manifold Riser, 6351 $127.88
Osco Motors 89152 9863-T Exhaust Manifold Riser, 9863-T $136.53

OMC Thermostats, Housings & Parts
Osco Motors 111948 CV55 Thermostat Housing Assembly, GM Small Block, CV55 $85.68

Other Engine Applications
Osco Motors 115551 1845 Exhaust Elbow 90 Degree $106.73
Osco Motors 90749 BE Exhaust Manifold Adaption End Plate, BE $42.71
Osco Motors 90750 RB Exhaust Manifold Adaption End Plate, RB $33.86
Osco Motors 90726 CW818-396xBE Exhaust Manifold Assembly, Chevy V8, CW818-396xBE $305.15
Osco Motors 90738 FH818xBE Exhaust Manifold Assembly, Ford V8, FH818xBE $295.03
Osco Motors 90739 FH818xRB Exhaust Manifold Assembly, Ford V8, FH818xRB $295.03
Osco Motors 90756 CD818xBE Exhaust Manifold Assembly, GM Diesel, CD818xBE $307.90
Osco Motors 90757 CD818xRB Exhaust Manifold Assembly, GM Diesel, CD818xRB $307.90
Osco Motors 90747 BW Exhaust Manifold Conversion Front Plate, BW $34.90
Osco Motors 90791 52B Exhaust Manifold Riser Elbow, 52B $48.80
Osco Motors 90806 52C Exhaust Manifold Riser Elbow, 52C $45.84
Osco Motors 90809 RG Exhaust Manifold Riser Gasket, RG $4.16

Other Exhaust Parts
Osco Motors 99836 MO4-HOK Adapter Plate Kit, 181 c.i. & 3.0L GM Engines $119.23
Osco Motors 89514 MO4-HO Exhaust Manifold Adapter Plate, MO4-HO $87.50
Osco Motors 89462 CT-LR Exhaust Manifold Choke Tube, CT-LR $32.29
Osco Motors 89479 CT-LS Exhaust Manifold Choke Tube, CT-LS $32.29
Osco Motors 90656 05944 Exhaust Manifold End Plate Gasket, 05944 $4.67

Other OMC Exhaust Parts
Osco Motors 89135 F68N9 Exhaust Manifold 90° Water Fitting, F68N9 Call for Quote
Osco Motors 89514 MO4-HO Exhaust Manifold Adapter Plate, MO4-HO $87.50
Osco Motors 89137 BWS Exhaust Manifold Front Plate, BWS $61.68
Osco Motors 89183 2229 Exhaust Manifold Hose Cap, 1" ID, 2229 $5.71
Osco Motors 89178 2228 Exhaust Manifold Hose Cap, 1-1/4" ID, 2228 $5.71
Osco Motors 89179 C20 Exhaust Manifold Hose Clamp, C20 $2.70
Osco Motors 89138 BWF Exhaust Manifold Rear Plate, BWF $34.90
Osco Motors 89140 MO60188 Exhaust Manifold Riser Adapter, OMC 250, MO60188 $69.46
Osco Motors 89148 0188-MK Exhaust Manifold Riser Mounting Kit, 0188-MK $6.78
Osco Motors 89153 9863-MK Exhaust Manifold Riser Mounting Kit, 9863-MK $8.34
Osco Motors 89142 MO601 Exhaust Manifold Throttle Linkage Adapter, MO601 $13.02

Small Block Chev. V-8
Osco Motors 93961 CRR80x2.375 80° Exahust elbow, 3 " X 2.375" $37.50
Osco Motors 99933 1870-V6 Elbow, 70? 2 3/8" hose for flange RA / RB $107.69
Osco Motors 155901 CRR45x3.5 Exhaust Elbow and Hose Adaptor Kit, Osco 45 degree 3.5", for GM Big Block V8 $53.08
Osco Motors 90706 CVCR818 Exhaust Manifold - Small Block GM V8, CVCR818 $193.01
Osco Motors 89287 1812-8 Exhaust Manifold 8-1/2" Riser Assy, 1812-8 $356.26
Osco Motors 89305 AE Exhaust Manifold Adaption End Plate, AE $33.46
Osco Motors 90749 BE Exhaust Manifold Adaption End Plate, BE $42.71
Osco Motors 89306 RA Exhaust Manifold Adaption End Plate, RA $31.77
Osco Motors 90750 RB Exhaust Manifold Adaption End Plate, RB $33.86
Osco Motors 90722 CV818-350xBE Exhaust Manifold Assembly, Chevy V8, CV818-350xBE $282.35
Osco Motors 90723 CV818-350xRB Exhaust Manifold Assembly, Chevy V8, CV818-350xRB $255.51
Osco Motors 90747 BW Exhaust Manifold Conversion Front Plate, BW $34.90
Osco Motors 89307 AG Exhaust Manifold End Plate Gasket, AG $4.39
Osco Motors 89288 1812 Exhaust Manifold Lower Elbow, 1812 $136.53
Osco Motors 90700 CRR-MK Exhaust Manifold Mounting Kit, CRR-MK $7.80
Osco Motors 90701 CRR-MK-FW Exhaust Manifold Mounting Kit, CRR-MK-FW $7.80
Osco Motors 90707 CVCR-MK Exhaust Manifold Mounting Kit, CVCR-MK $15.00
Osco Motors 90789 52A Exhaust Manifold Riser Elbow, 52A $46.69
Osco Motors 90791 52B Exhaust Manifold Riser Elbow, 52B $48.80
Osco Motors 90806 52C Exhaust Manifold Riser Elbow, 52C $45.84
Osco Motors 90809 RG Exhaust Manifold Riser Gasket, RG $4.16
Osco Motors 89293 1800-K Exhaust Manifold Riser Mounting Kit, 1800-K $16.36
Osco Motors 89284 1815-A Exhaust Manifold Riser Water Pipe, 1815-A $7.14
Osco Motors 90698 CRR-1 Exhaust Manifold Riser, 3" Outlet, CRR-1 $110.58
Osco Motors 90699 CRR-3 Exhaust Manifold Riser, 3" Outlet, CRR-3 $117.30
Osco Motors 90705 CRR-G-SP Exhaust Manifold Stainless Plate, CRR-G-SP $9.90
Osco Motors 90703 CRR-G Exhaust Manifold to Riser Gasket, CRR-G $4.39
Osco Motors 90704 CRR-G-FW Exhaust Manifold to Riser Gasket, CRR-G-FW $7.52

Small Block Ford V-8
Osco Motors 93961 CRR80x2.375 80° Exahust elbow, 3 " X 2.375" $37.50
Osco Motors 90695 FLCR818 Exhaust Manifold - Small Block Ford V8, FLCR818 $178.30
Osco Motors 89287 1812-8 Exhaust Manifold 8-1/2" Riser Assy, 1812-8 $356.26
Osco Motors 89305 AE Exhaust Manifold Adaption End Plate, AE $33.46
Osco Motors 90749 BE Exhaust Manifold Adaption End Plate, BE $42.71
Osco Motors 89306 RA Exhaust Manifold Adaption End Plate, RA $31.77
Osco Motors 90750 RB Exhaust Manifold Adaption End Plate, RB $33.86
Osco Motors 90735 FB818xBE Exhaust Manifold Assembly, Ford V8, FB818xBE $234.38
Osco Motors 90736 FB818xRB Exhaust Manifold Assembly, Ford V8, FB818xRB $234.38
Osco Motors 89302 FL818xAE Exhaust Manifold Assembly, V8 W/AE Adaption $234.38
Osco Motors 89303 FL818xRA Exhaust Manifold Assembly, V8 W/RA Adaption $234.38
Osco Motors 90747 BW Exhaust Manifold Conversion Front Plate, BW $34.90
Osco Motors 89307 AG Exhaust Manifold End Plate Gasket, AG $4.39
Osco Motors 89288 1812 Exhaust Manifold Lower Elbow, 1812 $136.53
Osco Motors 90700 CRR-MK Exhaust Manifold Mounting Kit, CRR-MK $7.80
Osco Motors 90701 CRR-MK-FW Exhaust Manifold Mounting Kit, CRR-MK-FW $7.80
Osco Motors 90696 FLCR-MK Exhaust Manifold Mounting Kit, FLCR-MK $14.57
Osco Motors 90789 52A Exhaust Manifold Riser Elbow, 52A $46.69
Osco Motors 90791 52B Exhaust Manifold Riser Elbow, 52B $48.80
Osco Motors 90806 52C Exhaust Manifold Riser Elbow, 52C $45.84
Osco Motors 90809 RG Exhaust Manifold Riser Gasket, RG $4.16
Osco Motors 89293 1800-K Exhaust Manifold Riser Mounting Kit, 1800-K $16.36
Osco Motors 89284 1815-A Exhaust Manifold Riser Water Pipe, 1815-A $7.14
Osco Motors 90698 CRR-1 Exhaust Manifold Riser, 3" Outlet, CRR-1 $110.58
Osco Motors 90699 CRR-3 Exhaust Manifold Riser, 3" Outlet, CRR-3 $117.30
Osco Motors 90705 CRR-G-SP Exhaust Manifold Stainless Plate, CRR-G-SP $9.90
Osco Motors 90703 CRR-G Exhaust Manifold to Riser Gasket, CRR-G $4.39
Osco Motors 90704 CRR-G-FW Exhaust Manifold to Riser Gasket, CRR-G-FW $7.52

Thermostats & Parts
Osco Motors 90544 41812 Thermostat Gasket, 41812 $5.62
Osco Motors 90545 47510 Thermostat Gasket, 47510 $2.58
Osco Motors 90313 48818 Thermostat Gasket, 48818 $3.63
Osco Motors 114231 FL55 Thermostat Housing Assembly, Ford Small Block V8, FL55 $96.59
Osco Motors 111948 CV55 Thermostat Housing Assembly, GM Small Block, CV55 $85.68
Osco Motors 90306 MC553-SB Thermostat Housing Base, Chevrolet Small Block V8, MC553-SB $101.92
Osco Motors 90499 MC552-BB Thermostat Housing Base, MC552-BB $99.04
Osco Motors 90498 MC552-SB Thermostat Housing Base, MC552-SB $99.04
Osco Motors 77683 47508 Thermostat Sleeve, 47508 $13.59
Osco Motors 90309 MC55-TBB Thermostat Top Cover, MC55-TBB $25.00
Osco Motors 90310 MC55-TSB Thermostat Top Cover, MC55-TSB $25.00

V6 Chevrolet Exhaust Manifolds
Osco Motors 90233 9745 Mercruiser Exhaust Manifold for 229-262, 9745 $191.18

V8 Big Block Chev Exhaust Manifolds
Osco Motors 90300 9011A Mercruiser Exhaust Manifold 454 GM, 9011A $216.17

V8 Ford Exhaust Manifolds
Osco Motors 90277 5604 Mercruiser Manifold for 302-351, Port, 5604 $283.09
Osco Motors 90276 5603 Mercruiser Manifold for 302-351, Stbd, 5603 $283.09

V8 Small Block Chev Exhaust Manifolds
Osco Motors 90286 7234B Mercruiser Exhaust Manifold GM Port, 7234B $235.29
Osco Motors 90287 7235B Mercruiser Exhaust Manifold GM Starboard, 7235B $235.29
Osco Motors 90297 7114B2 Mercruiser Exhaust Manifold, 7114B2 $148.53

Volvo Manifold & Exhaust Gaskets
Osco Motors 88411 VO-GH Exhaust Manifold Gasket Set, VO-GH $9.90
Osco Motors 90595 35908 Exhaust Manifold Gasket, 35908 $4.39
Osco Motors 90591 5805-MK Exhaust Manifold Mounting Kit, 5805-MK $14.37
Osco Motors 88412 VO-MK Exhaust Manifold Mounting Kit, VO-MK $26.66
Osco Motors 90593 56879-MK Exhaust Riser Mounting Kit, 56879-MK $8.75
* Special Limited Time Pricing
Looking for an OEM quality replacement Marine Exhaust system? Try Osco!
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