Diesel Alternator, Perkins & Lehman, CAT, 12 Volt, 85 Amp, 20172


Diesel Alternator, Perkins & Lehman, CAT, 12 Volt, 85 Amp, 20172
SKU: 13780
Mfg# 20172
UNIT: Each
Description: AlternatorRated Output: 85 ampVoltage: 12 volt
Typically Ships Out in 1-2 Business Days


Diesel Alternator, Perkins & Lehman, CAT, 12 volt, 85 amp, 20172.

  • NEW 12 volt, 85 amp
  • Fits Perkins & Lehman
  • Replaces Lehman # 2E7
  • Replaces Prestolite # 66021535S
  • Replaces Lucas # 47020088
  • Fits on Ford Lehman SP
  • Replaces Perkins #'s 2871A303, 2871A301, 2871A168
  • Replaces CAT #225-3141
  • For use on diesel engines only



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Q: What is the proper connection of Diesel Alternator, Perkins & Lehman, CAT, 85-AMP, 12V, 20172(Cat P.N. 225-3141) of its terminals W, D+, and B+ for diesel engine CAT diesel engine 3054C. A; W is for the tach, D+ is to excite the alternator and B+ is the main battery wire.



Sterndrive Engineering offers a one (1) year fault free warranty on rotating electrical parts (Starters, Alternators, Trim Motors) and a one (1) year Limited warranty on all other parts (solenoids, voltage regulators, water pumps, etc.). These warranties do not apply to any repairs, alterations, or work undertaken by third parties not involved in the actual manufacturing of the product.


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  • All Returns must be returned within 30 days of receipt of the items.
  • Some products are non-returnable, please contact us for further details.
  • Manufacturer defects reported within 30 days of receipt will be supplied a pre-paid label for return shipping upon approval.
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