1. Boat Parts In Otsterndriv Sterndrive Prices For Sale.
  2. sku: 4900176898997603
  3. MERCRUISER 85688

MERCRUISER 85688 Cylinder Block Crankcase Crankshaft 3.7 170HP

fits model: Marine. make: Mercury.

85688 Mercruiser Mercury Marine 3.7 170hp 4 Cylinder Short Block Crankcase Crankshaft

( Brand: Mercruiser ), ( Manufacturer Part Number: 85688 ), ( Part Type: Cylinder Block Crankshaft )

Review MERCRUISER Mercury 3.7 170hp Cylinder Short Block Crankcase Crankshaft fits MARINE

The Mercruiser 85688 Mercury Marine 3.7 170hp Cylinder Block Crankcase Crankshaft is a crucial component of the marine engine, responsible for converting linear motion of the pistons into rotational motion of the propeller. This crankshaft is specifically designed for the Mercury Marine 3.7 Liter 170HP engine and is a key element in delivering smooth, reliable, and powerful performance on the water.

Constructed from high-strength, forged steel, this crankshaft offers exceptional durability and resistance to fatigue. It features precision-machined and polished journals to ensure a perfect fit with the pistons and connecting rods. The crankshaft also includes heavy-duty, full-rolling bearings, which provide superior load capacity and minimize friction for enhanced efficiency and longer service life.

The crankshaft's counterweight design is optimized to balance the engine, reducing vibrations and providing a more comfortable operating experience. The crankshaft also includes a precision-machined crankshaft position sensor mounting surface, allowing for easy installation and integration of the sensor for engine monitoring and diagnostics.

This crankshaft is manufactured to meet the highest standards of quality and performance. It undergoes rigorous testing and inspection to ensure it meets the strict specifications of Mercury Marine. The Mercruiser 85688 Mercury Marine 3.7 170hp Cylinder Block Crankcase Crankshaft is an essential upgrade or replacement for any Mercury Marine 3.7 Liter 170HP engine, providing the durability, reliability, and power needed to make your time on the water unforgettable.

The Mercury Marine 3.7 170hp cylinder block, crankcase, and crankshaft (part number 85688) is a crucial component of a Mercury outboard engine. Here are some potential pros and cons of buying this part:

Pros:

1. High Power Output: This crankshaft is designed to handle a high power output of 170 horsepower, making it suitable for larger outboard engines.

2. Durability: Mercury Marine is known for producing high-quality marine parts, and this crankshaft is no exception. It is engineered to withstand the rigors of marine use.

3. Easy Installation: This part is a direct replacement for the stock crankshaft, making installation relatively straightforward.

4. OEM Part: Using an OEM (Original Equipment Manufacturer) part like this one ensures that it is built to the same specifications as the original part and is compatible with other engine components.

Cons:

1. Cost: OEM parts can be more expensive than aftermarket alternatives. This crankshaft may be more costly than some aftermarket options.

2. Availability: Depending on the location and availability of the part from Mercury Marine dealers, it may take some time to receive the part.

3. Limited Compatibility: This part is specific to the Mercury Marine 3.7 170hp engine, so it cannot be used with other engine models.

In conclusion, the Mercury Marine 3.7 170hp cylinder block, crankcase, and crankshaft (part number 85688) is a high-quality, durable component that offers the advantages of being a direct OEM replacement and ensuring compatibility with other engine components. However, it may be more expensive than aftermarket alternatives and may have limited availability. Ultimately, the decision to purchase this part depends on the specific needs and budget of the consumer.

If you are in need of a reliable and high-performing crankshaft for your Mercury Marine 3.7 170hp engine, then the OEM part is a recommended choice. However, if cost is a significant concern, aftermarket alternatives may be worth considering. It is always essential to ensure that any replacement part is compatible with the engine and meets the required specifications.

Details:

Could possibly be cleaned with just a hone. Serial number is B485834. Came out of a 1987 boat. Motor turns over freely.

188 hours on the meter. 3 of the cylinders had rust when I pulled it apart and 2 have very minor pitting. Complete short block as shown. Standard size bore.

No cracks or other damage to the block.

part #: 85688 prices

  • $150.00-$158.07

specifications otsterndriv:

  • for models: Marine
  • for makes: Mercury
  • brand: Mercruiser
  • mpn: 85688
  • part type: Cylinder Block Crankshaft

returns otsterndriv:

  • policy: Returns Accepted
  • time: 30 Days
  • paid by: Seller

shipping otsterndriv:

seller otsterndriv:

  • rating: 100.0%
  • city: Rockford, Michigan
  • # reviews: 1466

general otsterndriv:

  • Boat Parts > Sterndrive Motors Components > Other
  • condition: Used

payments otsterndriv:

  • credit card: Mastercard
  • other
  • wallet: Paypal

offer otsterndriv:

  • started: March 2, 2026
  • best offers: True
  • availability: In Stock
  • sold: 0
  • options: Seller-arranged-local-pickup
  • quantity: 1
for models: marine, for makes: mercury, part type: cylinder block crankshaft,
category: boat parts > sterndrive components, sku: 4900176898997603,
Mercruiser 85688 Is Similar To:
otsterndriv logo
2 offers $150.00–$158.07 USD
  • New: Never Used. Offer #1 priced at $158.07 + $63.21 shipping estimate = $221.28* total. May suit the following engines - Various early Big Block Engines 80's - 90's.+$63.21 shipping
  • Used. Offer #2 priced at $150.00 + $Calculated shipping estimate = $150.00* total. Could possibly be cleaned with just a hone. Complete short block as shown.+$Calculated shipping

Copyright © otsterndriv.com