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Mercruiser Inboard Exhaust System Parts

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Products: 1 - 50 of 211
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H2O, Port / Starboard Mercruiser Manifold

H2O, Port / Starboard Mercruiser Manifold

Mfr. H2O | Mfr No. 5506-3

H2O, Port / Starboard Mercruiser Manifold. Comparable to Port / Starboard Mercruiser Manifold, 18-1957-1...
$166.26
On Sale


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Sierra 18-1908, Manifold Riser Spacer for Mercruiser Stern Drives

Sierra 18-1908, Manifold Riser Spacer for Mercruiser Stern Drives

Mfr. Sierra | Mfr No. 18-1908

Sierra 18-1908, Manifold Riser Spacer for Mercruiser Stern Drives
$83.82
On Sale


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Manifold Riser Spacer Kit, Mercruiser 807476A6, 93320A5

Manifold Riser Spacer Kit, Mercruiser 807476A6, 93320A5

Mfr. Sierra | Mfr No. 18-1908K

Manifold Riser Spacer Kit, Mercruiser 807476A6, 93320A5. Lifetime warranty on Sierra Manifold Riser Spacers and other Sierra Engine Parts...
$242.22
On Sale


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Manifold Riser, 18-1976-1

Manifold Riser, 18-1976-1

Mfr. Sierra | Mfr No. 18-1976-2

Manifold Riser, 18-1976-1. Fits most Mercruiser V-6 & V-8 applications 7° (4" O.D. Riser). Replaces: Mercruiser Inboard/Outboard #44354A3...
$103.79
On Sale


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Manifold w/ Mounting Package, 2.5L 153 CID & 3.0L 181 CID, 18-1954-1

Manifold w/ Mounting Package, 2.5L 153 CID & 3.0L 181 CID, 18-1954-1

Mfr. Sierra | Mfr No. 18-1954-1

Manifold w/ Mounting Package, 2.5L 153 CID & 3.0L 181 CID, 18-1954-1 . This Sierra manifold fits most late model 2.5L 153 CID & 3.0L 181 CID with Rochester Carb. Has a 5 bolt pattern...
$418.14
On Sale


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Manifold w/ Mounting Package by Sierra

Manifold w/ Mounting Package by Sierra

Mfr. Sierra | Mfr No. 18-1953-2

Replaces: Mercruiser Inboard/Outboard #87114A19. Fits either port or starboard side. Fits most Mercruiser (GM) small blocks with center riser...
$143.27
On Sale


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Mercruiser Cooling System - Manifold w/ Mounting Package - Port Side

Mercruiser Cooling System - Manifold w/ Mounting Package - Port Side

Mfr. Sierra | Mfr No. 18-1950-1

Mercruiser Cooling System - Manifold w/ Mounting Package - Port Side, fits most Mercruiser (GM) small blocks with end riser. The manifold is for the port side and replaces part number 77234A2...
$253.54
On Sale


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Mercruiser Cooling System Manifold w/ Mounting Package, 18-1956-1

Mercruiser Cooling System Manifold w/ Mounting Package, 18-1956-1

Mfr. Sierra | Mfr No. 18-1956-1

Mercruiser Cooling System Manifold w/ Mounting Package, 18-1956-1. A Mercruiser cooling system built for both port and starboard. Fits most late model 2.5L, 153 CID, and 3.0L 181 CID...
$263.26
On Sale


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Mercruiser Cooling System- Manifold w/ Mounting Package - Starboard Side

Mercruiser Cooling System- Manifold w/ Mounting Package - Starboard Side

Mfr. Sierra | Mfr No. 18-1951-1

Mercruiser Cooling System- Manifold w/ Mounting Package - Starboard Side. A Starboard side Manifold from Mercruiser, pre painted, packaged and leak tested...
$242.13
On Sale


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Mercruiser Manifold Elbow

Mercruiser Manifold Elbow

Mfr. Sierra | Mfr No. 18-1970-1

Replaces: Mercruiser Inboard/Outboard #98504A3. Fits V-6 & V-8 applications 15° (3" O.D. Riser)...
$102.90
On Sale


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Direct Replacement Mercruiser V8 Center Riser Exhaust Manifold, MC-1-87114

Direct Replacement Mercruiser V8 Center Riser Exhaust Manifold, MC-1-87114

Mfr. Barr Marine by EDM | Mfr No. MC-1-87114

Direct Replacement Mercruiser V8 Center Riser Exhaust Manifold, MC-1-87114. Port or Starboard. Replaces Mercruiser # 87114A8 and 87114A19...
$221.53


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1/2" NPT to 1" Hose (Straight) Brass Hose Fitting

1/2" NPT to 1" Hose (Straight) Brass Hose Fitting

Mfr. Barr Marine by EDM | Mfr No. 50 512 017

1/2" NPT to 1" Hose (Straight) Brass Hose Fitting...
$17.50


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3" Riser Extension Blocks, MC-20-93322A3

3" Riser Extension Blocks, MC-20-93322A3

Mfr. Barr Marine by EDM | Mfr No. MC-20-93320A3

3" Riser Extension Blocks, MC-20-93322A3. Sold as a pair only. Includes fasteners and gaskets...
$190.14


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3" Riser Spacer Blocks, MC-20-61811A4, Pack of 2

3" Riser Spacer Blocks, MC-20-61811A4, Pack of 2

Mfr. Barr Marine by EDM | Mfr No. MC-20-61811A4

3" Riser Spacer Blocks, MC-20-61811A4. Sold as a pair only. Includes six gaskets and mounting hardware...
$160.42


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3" Riser Spacer, MC-20-61851A3

3" Riser Spacer, MC-20-61851A3

Mfr. Barr Marine by EDM | Mfr No. MC-20-61851A3

3" Riser Spacer, MC-20-61851A3. Fits Mercruiser 140 hp Chevrolet Based Engines. MC-20-61851A3. Includes gaskets and mounting hardware...
$136.36


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3" Riser Spacers, MC-20-61851A2

3" Riser Spacers, MC-20-61851A2

Mfr. Barr Marine by EDM | Mfr No. MC-20-61851A2

3" Riser Spacers, MC-20-61851A2. Includes gaskets and mounting hardware. Sold as a pair only...
$172.60


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6" Riser Extension Blocks, MC-20-93322A3, Pack of 2

6" Riser Extension Blocks, MC-20-93322A3, Pack of 2

Mfr. Barr Marine by EDM | Mfr No. MC-20-93322A3

6" Riser Extension Blocks, MC-20-93322A3, Pack of 2. Includes fasteners and gaskets...
$183.33


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Barr Marine, Restrictor Gasket, Direct Replacement, MC47-27-41811

Barr Marine, Restrictor Gasket, Direct Replacement, MC47-27-41811

Mfr. Barr Marine by EDM | Mfr No. MC47 27 41811

Barr Marine, Restrictor Gasket, Direct Replacement, MC47-27-41811. Two (2) required per plate used...
$17.50


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Block Off Plate Gasket, Mercruiser, MC47-27-864549

Block Off Plate Gasket, Mercruiser, MC47-27-864549

Mfr. Barr Marine by EDM | Mfr No. MC47-27-864549

Block Off Plate Gasket, Mercruiser, MC47-27-864549...
$50.77


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Barr Marine, Block Off Plate Gasket, Restrictor, Mercruiser

Barr Marine, Block Off Plate Gasket, Restrictor, Mercruiser

Mfr. Barr Marine by EDM | Mfr No. MC47-27-864547

Barr Marine, Block Off Plate Gasket, Restrictor, Mercruiser. Direct replacement restrictor gasket...
$51.97


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Direct Replacement 120hp Exhaust Riser, MC-20-55538

Direct Replacement 120hp Exhaust Riser, MC-20-55538

Mfr. Barr Marine by EDM | Mfr No. MC-20-55538

Direct Replacement 120hp Exhaust Riser, MC-20-55538. Fits Mercruiser 120 hp Chevrolet Based Engines. Replaces Mercruiser # B39920 and B55538A2...
$143.15


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Direct Replacement Mercruiser 140hp 4 Cylinder Exhaust Manifold, MC-1-52390

Direct Replacement Mercruiser 140hp 4 Cylinder Exhaust Manifold, MC-1-52390

Mfr. Barr Marine by EDM | Mfr No. MC-1-52390

Direct Replacement Mercruiser 140hp 4 Cylinder Exhaust Manifold, MC-1-52390. Fits Mercruiser 140 hp 181 cid Chevrolet Based Engines...
$271.23


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Direct Replacement 15° Riser, MC-20-98504

Direct Replacement 15° Riser, MC-20-98504

Mfr. Barr Marine by EDM | Mfr No. MC-20-98504

Direct Replacement 15° Riser, MC-20-98504. Replaces Mercruiser # 98504A3...
$140.63


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Direct Replacement Chevrolet Big Block Log Style Exhaust Manifold, MC-1-47735, MC-1-47736

Direct Replacement Chevrolet Big Block Log Style Exhaust Manifold, MC-1-47735, MC-1-47736

Mfr. Barr Marine by EDM

Direct Replacement Chevrolet Big Block Log Style Exhaust Manifold, MC-1-47735, MC-1-47736. Fits Mercruiser V8 Big Block Models 325, 330, 350, 370, 400 Inboard Units. Replaces Merc # 47735A1...
$330.00 - $334.46

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Direct Replacement Chevrolet Center Riser Aluminum Exhaust Manifold, CHV-1-92

Direct Replacement Chevrolet Center Riser Aluminum Exhaust Manifold, CHV-1-92

Mfr. Barr Marine by EDM | Mfr No. CHV-1-92

Direct Replacement Chevrolet Center Riser Aluminum Exhaust Manifold, CHV-1-92. Watercooled center discharge manifold to fit small block GM / Chev engine. All Years...
$269.70


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Direct Replacement Exhaust Manifold (Rochester Carb) 6 Bolt Mounting Pattern, MC-1-95862, MC-1-96705

Direct Replacement Exhaust Manifold (Rochester Carb) 6 Bolt Mounting Pattern, MC-1-95862, MC-1-96705

Mfr. Barr Marine by EDM

Direct Replacement Exhaust Manifold (Rochester Carb) 6 Bolt Mounting Pattern, MC-1-95862, MC-1-96705. Comes with or without choke stove. Replaces Mercruiser # 95862A9 & 96705A1...
$271.28 - $292.00

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Direct Replacement Exhaust Riser, MC-20-12076

Direct Replacement Exhaust Riser, MC-20-12076

Mfr. Barr Marine by EDM | Mfr No. MC-20-12076

Direct Replacement Exhaust Riser, MC-20-12076. Fits Mercruiser 120R/140R MR/Alpha 1 engines. Replaces Mercruiser # 12076A1...
$169.52


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Direct Replacement Exhaust Riser, MC-20-76325

Direct Replacement Exhaust Riser, MC-20-76325

Mfr. Barr Marine by EDM | Mfr No. MC-20-76325

Direct Replacement Exhaust Riser, MC-20-76325. Fits Mercruiser 120R/140R MR/Alpha 1 engines. Low profile. Replaces Mercruiser # 76325A2...
$172.86


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Direct Replacement Dry Joint Exhaust Riser, Mercruiser, MC-20-864591

Direct Replacement Dry Joint Exhaust Riser, Mercruiser, MC-20-864591

Mfr. Barr Marine by EDM | Mfr No. MC-20-864591

Direct Replacement Dry Joint Riser, MC-20-864591. Fits inboard applications. Replaces Mercruiser #864591T02...
$234.67


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Direct Replacement GM Small Block Center Riser Style Exhaust Manifold, CHV-1-83

Direct Replacement GM Small Block Center Riser Style Exhaust Manifold, CHV-1-83

Mfr. Barr Marine by EDM | Mfr No. CHV-1-83

Direct Replacement GM Small Block Center Riser Style Exhaust Manifold, CHV-1-83. MerCruiser V8-283, 302, 305, 307, 327 and 350 C.I.D. For all years...
$206.25


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Direct Replacement Exhaust Manifold (Mercarb) 6 bolt Mounting Pattern No Choke Stove, MC-1-99798

Direct Replacement Exhaust Manifold (Mercarb) 6 bolt Mounting Pattern No Choke Stove, MC-1-99798

Mfr. Barr Marine by EDM | Mfr No. MC-1-99798

Direct Replacement Exhaust Manifold (Mercarb) 6 bolt Mounting Pattern No Choke Stove, MC-1-99798. Replaces Mercruiser # 99798A9. Fits Mercruiser 120R/140R MR/Alpha 1 engines...
$287.67


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Direct Replacement Mercruiser 120hp 4 Cylinder Exhaust Manifold, MC-1-63122

Direct Replacement Mercruiser 120hp 4 Cylinder Exhaust Manifold, MC-1-63122

Mfr. Barr Marine by EDM | Mfr No. MC-1-63122

Direct Replacement Mercruiser 120hp 4 Cylinder Exhaust Manifold, MC-1-63122. Fits 120hp, 153 cu. in. 4 cylinder 1968-82. Replaces Mercruiser # B63122A1...
$289.67


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Direct Replacement Mercruiser 165hp 6 Cylinder Exhaust Manifold, MC-1-58759

Direct Replacement Mercruiser 165hp 6 Cylinder Exhaust Manifold, MC-1-58759

Mfr. Barr Marine by EDM | Mfr No. MC-1-58759

Direct Replacement Mercruiser 165hp 6 Cylinder Exhaust Manifold, MC-1-58759 . Fits Mercruiser 165 hp Chev Inline 6 cylinder engines. Replaces Mercruiser # 58759A1...
$497.26


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Direct Replacement Mercruiser Log Style Exhaust Manifold, MC-1-47737, MC-1-47738

Direct Replacement Mercruiser Log Style Exhaust Manifold, MC-1-47737, MC-1-47738

Mfr. Barr Marine by EDM

Direct Replacement Mercruiser Log Style Exhaust Manifold, MC-1-47737, MC-1-47738. Fits Mercruiser 225, 250, 255, 270 and 280 models...
$334.46 - $360.00

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Direct Replacement Mercruiser Log Style Exhaust Manifold, MC-1-77234, MC-1-77235

Direct Replacement Mercruiser Log Style Exhaust Manifold, MC-1-77234, MC-1-77235

Mfr. Barr Marine by EDM

Direct Replacement Mercruiser Log Style Exhaust Manifold, MC-1-77234, MC-1-77235. Fits Mercruiser V8 198, 228, 255, 260 & 898 Inboard and Stern-Drive Units...
$311.67 - $315.88

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Direct Replacement Mercruiser V8 Center Riser Dry Joint Exhaust Manifold, MC-1-865735

Direct Replacement Mercruiser V8 Center Riser Dry Joint Exhaust Manifold, MC-1-865735

Mfr. Barr Marine by EDM | Mfr No. MC-1-865735

Direct Replacement Mercruiser V8 Center Riser Dry Joint Exhaust Manifold, MC-1-865735. Port or Starboard. Replaces Mercruiser #865735A02.
$282.33


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Direct Replacement Mercruiser V8 Ford 302 and 351 Exhaust Manifold, MC-1-65603, MC-1-65604

Direct Replacement Mercruiser V8 Ford 302 and 351 Exhaust Manifold, MC-1-65603, MC-1-65604

Mfr. Barr Marine by EDM

Direct Replacement Mercruiser V8 Ford 302 and 351 Exhaust Manifold, MC-1-65603, MC-1-65604. Fits Models 188, 215, 233, 255, and 888 Inboard and Stern-Drive units...
$320.21 - $320.21

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Direct Replacement Mercruiser GM Big Block Center Rise Exhaust Manifold, MC-1-89011

Direct Replacement Mercruiser GM Big Block Center Rise Exhaust Manifold, MC-1-89011

Mfr. Barr Marine by EDM | Mfr No. MC-1-89011

Direct Replacement Mercruiser V8 GM Big Block Center Rise Exhaust Manifold, MC-1-89011. Fits Mercruiser models 330, 340 and 454 magnum. Replaces Mercruiser # 89011A8. For inboard and sterndrives...
$325.77


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Direct Replacement Riser, MC-20-44354

Direct Replacement Riser, MC-20-44354

Mfr. Barr Marine by EDM | Mfr No. MC-20-44354

Direct Replacement Riser, MC-20-44354. Replaces Merc # 44354A3. 4" outlet...
$177.05


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Direct Replacement Riser, MC-20-60426

Direct Replacement Riser, MC-20-60426

Mfr. Barr Marine by EDM | Mfr No. MC-20-60426

Direct Replacement Riser, MC-20-60426. with stainless steel sleeve at exhaust end. Replaces Mercruiser # B-60426A1 and B-76351A1. Fits most log style manifolds...
$158.22


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Direct Replacement Riser, MC-20-72963

Direct Replacement Riser, MC-20-72963

Mfr. Barr Marine by EDM | Mfr No. MC-20-72963

Direct Replacement Riser, MC-20-72963. Replaces Mercruiser # 72963A1...
$184.86


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Direct Replacement Riser, MC-20-76351

Direct Replacement Riser, MC-20-76351

Mfr. Barr Marine by EDM | Mfr No. MC-20-76351

Direct Replacement Riser, MC-20-76351, without stainless steel sleeve. Replaces Mercruiser # B-60426A1 and B-76351A1...
$145.14


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Direct Replacement Riser, MC-20-76668

Direct Replacement Riser, MC-20-76668

Mfr. Barr Marine by EDM | Mfr No. MC-20-76668

Direct Replacement Riser, MC-20-76668. Sterndrive applications. Replaces Mercruiser # 76668A3, 72964A1, 47877A4...
$209.15


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Direct Replacement Riser, MC-20-76771

Direct Replacement Riser, MC-20-76771

Mfr. Barr Marine by EDM | Mfr No. MC-20-76771

Direct Replacement Riser, MC-20-76771. Fits inboard applications. Replaces Mercruiser # B76771A3...
$187.46


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Direct Replacement V6 Chevrolet 4.3L Center Riser Style Exhaust Manifold, MC-1-99746

Direct Replacement V6 Chevrolet 4.3L Center Riser Style Exhaust Manifold, MC-1-99746

Mfr. Barr Marine by EDM | Mfr No. MC-1-99746

Direct Replacement V6 Chevrolet 4.3L Center Riser Style Exhaust Manifold, MC-1-99746. Replaces Mercruiser # 99746A3 and 99746A8. Fits Mercruiser 4.3L V-6 Chev engines...
$256.16


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Direct Replacement 0° Riser, MC-20-98502

Direct Replacement 0° Riser, MC-20-98502

Mfr. Barr Marine by EDM | Mfr No. MC-20-98502

Direct Replacement 0° Riser, MC-20-98502...
$171.88


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Exhaust Elbow Adapter, 30°, 20-0089P

Exhaust Elbow Adapter, 30°, 20-0089P

Mfr. Barr Marine by EDM | Mfr No. 20-0089P

Exhaust Elbow Adapter, 30 Degree, 20-0089P. 30° exhaust elbow adaptor, (includes adaptor, hose and clamps). For use with 3” I.D. exhaust hose.
$40.62


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Exhaust Gaskets - CHVA-47-0000, (5 Per Pack)

Exhaust Gaskets - CHVA-47-0000, (5 Per Pack)

Mfr. Barr Marine by EDM | Mfr No. CHVA-47-0000

Exhaust Gaskets - CHVA-47-0000, (5 Per Pack). Fits all 454/502 engines...
$56.69


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Direct Replacement GM Big Block Exhaust Manifold GM, Center Riser Style, CHVA-1-84

Direct Replacement GM Big Block Exhaust Manifold GM, Center Riser Style, CHVA-1-84

Mfr. Barr Marine by EDM | Mfr No. CHVA-1-84

Direct Replacement GM Big Block Exhaust Manifold GM, Center Riser Style, CHVA-1-84. Fits 427 and 454 CID GM big block V8 engines. Fits either side of engine. Mounting Kit Included...
$233.60


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Front End Cap w/ Hose Connection, 1-47638

Front End Cap w/ Hose Connection, 1-47638

Mfr. Barr Marine by EDM | Mfr No. 1-47638

Front End Cap w/ Hose Connection, 1-47638. Fits Mercruiser 120 hp Chevrolet Based Engines. Replaces Merc # 47638...
$41.00


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Products: 1 - 50 of 211
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Ask. Answer. Discuss.
Post a question or comment about Mercruiser Inboard Exhaust System Parts to our online boating community.
Question
Exhaust Manifold Riser

Which gaskets are used between manifold and riser?
Ones with small pin holes or open on all 4 sides?
1986 5.7 260/270 hp
Mercury inboard

Submitted by: Jeff Melin
Answer

Hello, this year calls for the small pin holes.


Question
Exhaust bellows - overheating

I have a 1990 four winns 205 sundowner, with a 302ci ford in/out mercrusiser. recently, while on the water and hooked-up, I had a bellows on the exhaust system, overheat, and fail. Luckily, made it back to shore. but, why would it overheat? engine @150 temp, and ok. oil pressure @40+, and ok.

Submitted by: gibsonsmth7
Answer

The most common issue is a clogged manifold or riser not allowing enough water to mix with your hot exhaust causing this problem. Mercruiser did not use a Ford powerplant in 1990 so you either have an OMC or Volvo drive. If you give the appropriate engine information we can look up the parts you need.


 
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