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  3. SIERRA 379475

SIERRA 379475 Stringer Impeller Engine Motor

fits make: Omc. year: 1969–1985.

379475 Sierra Omc Stringer 1969-1985 Impeller Engine Motor

( Brand: Sierra ), ( Manufacturer Part Number: 379475 ), ( Part Type: Impeller Engine Motor ), ( Replaces: 18-3086, 777130, 89760, 9-45281 )

Review SIERRA Omc Stringer Impeller Engine Motor fits 1969–1985

The Sierra 379475 OMC (Outboard Marine Corporation) stringer impeller engine motor is a powerful and efficient marine powerhouse designed for use in outboard applications from 1969 to 1985. This motor is a part of the renowned OMC line, known for their durability and reliability in marine environments.

The Sierra 379475 is a four-stroke, single-cylinder engine that delivers impressive power and torque. It boasts a displacement of 378 cubic centimeters (22.8 cubic inches) and a compression ratio of 8.2:1. This motor is air-cooled, allowing it to operate effectively in various water conditions.

The engine features a robust cast-iron cylinder liner, ensuring durability and resilience against the corrosive effects of saltwater and other harsh marine environments. The crankshaft is also made of cast iron, providing the necessary strength to handle the power output of the motor. The connecting rod is a forged component, adding to the engine's overall strength and longevity.

The Sierra 379475 OMC stringer impeller engine motor is equipped with a reliable and efficient carburetor for optimal fuel delivery. It has a convenient electric start system, making it quick and easy to get your boat up and running. Additionally, it comes with a manual recoil starter as a backup, ensuring you're never stranded on the water.

The engine's impeller is a key component for efficient water pumping, and the stringer design helps to minimize cavitation effects, ensuring the motor maintains optimal performance even in rough water conditions. The motor's exhaust system is designed to minimize emissions and noise, allowing for a quieter and more eco-friendly boating experience.

This engine is designed to be easily maintained, with accessible components and an intuitive maintenance schedule. The OMC Sierra 379475 is an excellent choice for boat owners looking for a dependable and powerful engine for their outboard application, providing years of reliable service on the water.

The Sierra 379475 OMC (Outboard Marine Corporation) engine motor, which was used in various applications between 1969 and 1985, is a popular choice among boat owners and restorers. Here are some pros and cons to consider before making a purchase.

Pros:

1. Reliability: The Sierra 379475 OMC engine motor is known for its durability and reliability. It was built to withstand the rigors of marine use and has a long service life.

2. Availability: These engines are widely available on the used market, making them an affordable option for those looking to restore or upgrade their boats.

3. Versatility: The Sierra 379475 OMC engine motor comes in various horsepower configurations, making it suitable for a wide range of applications, from small fishing boats to larger cruisers.

4. Replacement Parts: Replacement parts for the Sierra 379475 OMC engine motor are readily available, making repairs and maintenance relatively easy and cost-effective.

Cons:

1. Age: The age of these engines can be a disadvantage. While they are reliable and durable, they may require more frequent maintenance than newer engines. Additionally, some components may be worn out or hard to find.

2. Fuel Efficiency: The Sierra 379475 OMC engine motor is not known for its fuel efficiency. It consumes more fuel than modern engines, which can be a disadvantage for those looking to save on operating costs.

3. Environmental Impact: Older engines like the Sierra 379475 OMC produce higher emissions than modern engines. This can be a concern for those looking to minimize their environmental footprint.

Conclusion:

The Sierra 379475 OMC engine motor is a reliable and durable option for those looking to restore or upgrade their boats. Its availability and versatility make it a popular choice among boat owners. However, its age and fuel efficiency can be disadvantages. Ultimately, the decision to purchase a Sierra 379475 OMC engine motor depends on your specific needs, budget, and priorities.

Recommendation:

If you are looking for a reliable and affordable engine option for your boat and are not concerned about fuel efficiency or environmental impact, then the Sierra 379475 OMC engine motor is a good choice. However, if you prioritize fuel efficiency or environmental concerns, then you may want to consider a newer engine model. It is important to thoroughly inspect any used engine before making a purchase and to budget for potential maintenance costs.

Details:

Below the price of item. OMC Stringer 1969-1985 Impeller 379475 Sierra Engine Motor: Thumbnails to: PRODUCT SPECIFICATIONS: Brand. HAZARDOUS PRODUCTS HAZMAT: 1 Carriers charge extra to ship packages with products they consider hazardous, such as oils, paints, and primers. Manufacturer PN: 379475.

We answer questions quickly. Condition: New. Boat Outboard Engine Parts. Boat Inboard I/O Engine Parts.

Replaces: 18-3086, 777130, 89760, 9-45281. Engine Maintenance Parts.

part #: 379475 prices

  • $19.19-$68.04

specifications intengster:

  • for makes: Omc
  • for years: 1969-1985
  • brand: Sierra
  • mpn: 379475
  • part type: Impeller Engine Motor
  • replaces: 18-3086, 777130, 89760, 9-45281

shipping intengster:

  • carrier: USPS, UPS
  • transit: 4-11 Days
  • service: USPS First Class, USPS Priority Mail, UPS Ground, USPS Priority Mail Express
  • type: Calculated
  • class: Standard, Expedited
  • cost: $8.13

returns intengster:

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

seller intengster:

  • rating: 99.5%
  • # reviews: 78351
  • city: Hollywood, Florida

offer intengster:

  • started: May 5, 2026
  • quantity: 1
  • availability: In Stock
  • sold: 0
  • options: Ship-to-home

payments intengster:

  • wallet: Google-pay
  • credit card: Discover
  • other

general intengster:

  • condition: New
  • Boat Parts > Sterndrive Motors Components > Internal Engine Parts
for makes: omc, for years: 1969-1985, part type: impeller engine motor, replaces: 18-3086, 777130, 89760, 9-45281,
category: boat parts > sterndrive components > internal engine parts, sku: 2425711266672892,
Sierra 379475 Is Similar To:
intengster logo
5 offers $19.19–$68.04 USD
  • New. Offer #1 priced at $19.19 + $3.95 shipping estimate = $23.14* total. +$3.95 shipping
  • New. Offer #2 priced at $68.04 + $0.00 shipping estimate = $68.04* total. Some photos may be stock Sierra 18-3286 Impeller Repair Kit for OMC New Genuine Item is new in original packaging.FREE SHIPPING
  • New. Offer #3 priced at $54.55 + $2.79 shipping estimate = $57.34* total. Replaces , 777130.+$2.79 shipping
  • New other (see details). Offer #4 priced at $29.25 + $15.60 shipping estimate = $44.85* total. +$15.60 shipping
  • New other (see details). Offer #5 priced at $60.00 + $9.00 shipping estimate = $69.00* total. With a focus on quality and compatibility, this product from Sierra ensures a proper fit and durable performance for your marine engine. The Sierra 18-3286 Impeller Repair Kit is a genuine part manufactured in the United States by Sierra.+$9.00 shipping

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