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  3. SIERRA 983878

SIERRA 983878 Bearing Joint Shaft Inner

fits model: Cobra. make: Omc. year: 1986–1993.

983878 Sierra Omc Cobra Bearing U Joint Shaft Inner 1986-1993

( Brand: Sierra ), ( Manufacturer Part Number: 983878 ), ( Part Type: Bearing Joint Shaft ), ( Replaces: 18-1171, 21543 )

Review SIERRA Omc Bearing Joint Shaft Inner fits COBRA 1986–1993

Introducing the Sierra 983878 OMC Cobra Bearing Joint Shaft Inner, a critical component for your 1986-1993 OMC Cobra outboard engine. This inner shaft is specifically designed to provide a robust and reliable connection between the engine's crankshaft and the bearing assembly.

The Sierra 983878 is manufactured using high-quality materials for superior durability. It features a precision-machined surface for a snug fit in the engine and a hardened steel construction to withstand the rigors of marine use. The shaft's bore is designed to accept OEM-sized bearings, ensuring a proper fit and optimal engine performance.

This inner shaft is an essential part of the engine's powertrain and plays a crucial role in the engine's overall efficiency and reliability. Its robust design and precision engineering make it an excellent choice for boat owners who demand the best from their engines.

The Sierra 983878 OMC Cobra Bearing Joint Shaft Inner is an OEM-quality replacement part that is engineered to provide a perfect fit and function in your 1986-1993 OMC Cobra outboard engine. It is backed by the Sierra reputation for quality and reliability, ensuring that you can trust this part to keep your engine running smoothly for years to come.

In summary, the Sierra 983878 OMC Cobra Bearing Joint Shaft Inner is a critical component for the optimal performance and reliability of your 1986-1993 OMC Cobra outboard engine. Its precision engineering, high-quality materials, and robust design make it an excellent choice for boat owners who demand the best from their engines.

The Sierra 983878 OMC Cobra Bearing Joint Shaft Inner is a part used in the 1986-1993 Mercury Mariner, Mercury Meteor, and Ford Explorer models with the OMC 4.2L V6 engine. This part is essential in maintaining the smooth operation of the engine by allowing the crankshaft to rotate freely.

Pros of buying a Sierra 983878 OMC Cobra Bearing Joint Shaft Inner:

1. Reliability: A worn-out or damaged inner bearing joint shaft can cause engine failure. Replacing it with a new one can ensure the engine's reliability and longevity.

2. Improved Performance: A new inner bearing joint shaft can help improve engine performance by reducing friction and wear.

3. Reduced Noise: A worn-out inner bearing joint shaft can cause noise in the engine. Replacing it can help reduce engine noise and improve overall driving experience.

Cons of buying a Sierra 983878 OMC Cobra Bearing Joint Shaft Inner:

1. Cost: The cost of replacing the inner bearing joint shaft can be relatively high, especially if it is being replaced as a part of a larger engine repair or rebuild.

2. Labor Costs: The installation of the inner bearing joint shaft requires specialized knowledge and tools. Labor costs can add significantly to the total cost of the repair.

3. Availability: The availability of the Sierra 983878 OMC Cobra Bearing Joint Shaft Inner may be limited, especially for older vehicles, which can make it difficult to find and source the part.

Ending Conclusion:

The decision to buy the Sierra 983878 OMC Cobra Bearing Joint Shaft Inner depends on the specific needs and circumstances of the vehicle owner. If the engine is making noise or experiencing performance issues, replacing the inner bearing joint shaft may be necessary to ensure the engine's reliability and longevity. However, the cost and availability of the part may be a significant consideration.

Recommendation:

Before purchasing the Sierra 983878 OMC Cobra Bearing Joint Shaft Inner, it is recommended that vehicle owners consult with a qualified mechanic to assess the condition of their engine and determine if replacing the inner bearing joint shaft is necessary. If it is, they should consider shopping around for the best prices and availability and weigh the benefits against the costs before making a final decision.

Details:

OMC Cobra Bearing U Joint Shaft 983878 Inner 1986 1993 Sierra: Thumbnails to: PRODUCT SPECIFICATIONS: Brand: Sierra. Manufacturer PN: 983878. Below the price of item. We answer questions quickly.

HAZARDOUS PRODUCTS HAZMAT: 1 Carriers charge extra to ship packages with products they consider hazardous, such as oils, paints, and primers. Condition: New. Replaces: 18-1171, 21543.

part #: 983878 prices

  • $48.31-$66.96

specifications intengster:

  • for models: Cobra
  • for makes: Omc
  • for years: 1986-1993
  • brand: Sierra
  • mpn: 983878
  • part type: Bearing Joint Shaft
  • replaces: 18-1171, 21543

payments intengster:

  • other
  • credit card: Diners-club
  • wallet: Paypal

seller intengster:

  • rating: 99.5%
  • city: Hollywood, Florida
  • # reviews: 78317

offer intengster:

  • started: May 4, 2026
  • availability: In Stock
  • options: Ship-to-home
  • quantity: 4
  • sold: 0

shipping intengster:

  • cost: $13.74
  • carrier: USPS, UPS
  • transit: 4-11 Days
  • type: Calculated
  • service: USPS Priority Mail, UPS Ground, USPS Ground Advantage, USPS Priority Mail Express
  • class: Expedited, Standard

returns intengster:

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

general intengster:

  • condition: New
  • Boat Parts > Sterndrive Motors Components > Internal Engine Parts
for models: cobra, for makes: omc, for years: 1986-1993, part type: bearing joint shaft, replaces: 18-1171, 21543,
category: boat parts > sterndrive components > internal engine parts, sku: 2404630566672892,
Sierra 983878 Is Similar To:
intengster logo
5 offers $48.31–$66.96 USD
  • New. Offer #1 priced at $48.31 + $12.95 shipping estimate = $61.26* total. OMC Stern Drive U-Joint Shaft Bearing Replaces OMC .+$12.95 shipping
  • New. Offer #2 priced at $59.19 + $13.74 shipping estimate = $72.93* total. 010 911681 U Joint Bearing Hsg 1986-1993 GLM. OMC Cobra Shift Cover Gasket All Models 1986-1993 Sierra 18-0880 9-60400.+$13.74 shipping
  • New. Offer #3 priced at $66.96 + $8.60 shipping estimate = $75.56* total. Warranty issues are to be dealt with directly with the manufacturer. U-Joint Shaft Bearing.+$8.60 shipping
  • New. Offer #4 priced at $71.59 + $12.00 shipping estimate = $83.59* total. Description: "Sierra Bearing U Joint Shaft OMC Cobra Inner Shaft 1986-1993 " Aftermarket or OEM: Aftermarket Brand: "Sierra" Cross Reference: "18-1171, 21543".+$12.00 shipping
  • New. Offer #5 priced at $23.25 + $14.10 shipping estimate = $37.35* total. SKF products are designed and manufactured to the highest quality standards, ensuring long life and safety. Part Number: BR3.+$14.10 shipping

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