What does 'standard size' mean for these main bearings?

Standard size bearings are meant to be installed on a crankshaft that is still at its original factory diameter. If your crankshaft has been previously machined undersize due to wear, you would need to purchase an undersize bearing set.

What vehicles does this Omix main bearing set fit?

This set is designed for 1983-1990 Jeep CJ5, CJ7, CJ8 Scrambler, Cherokee XJ, J-Series Trucks, Comanche MJ, and Wrangler YJ models that are equipped with the 2.5 liter engine.

Does this set include everything needed for installation?

This is a complete set of main bearings for the engine. It does not include other components like seals, gaskets, or assembly lube, which are typically needed for a full engine rebuild and should be purchased separately.

Specifications

Brand: OMIX
Part #: 17465.12
UPC: 804314146603

OMIX

Omix Main Bearing Set 2.5L Std 83-90 CJ & Wrangler

Name: Omix Main Bearing Set 2.5L Std 83-90 CJ & Wrangler
Brand: OMIX
SKU: omix-omix-main-bearing-set-2-5l-std-83-90-cj-wrangler-t14-441580
Price: 92.15 USD
Availability: BackOrder

$92.15

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Omix Main Bearing Set for 1983-1990 Jeep 2.5L engines. Standard size for restoring original performance.

Key Features

Fits 1983-1990 Jeep CJ5, CJ7, CJ8 Scrambler, Cherokee XJ, J-Series Trucks, Comanche MJ, and Wrangler YJ models with 2.5L engines.
Standard size main bearing set for 2.5L engines.
OE style replacement matches original specifications.
Complete set for the entire engine.
Direct fit installation.
Backed by a limited 5-year warranty.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Will this fit your vehicle?

About this part

Product Details

When you're rebuilding a worn-out engine, replacing the main bearings is a key step to getting back that original performance. This Omix Main Bearing Set is a standard size replacement designed for 2.5 liter engines found in a range of Jeep models from the early 80s to the early 90s. You'll get a complete set for the entire engine, ready to be installed on the crankshaft journals.

These bearings are OE style, meaning they match the original specifications for a direct fit. Omix uses well-built materials to ensure they can handle the demands of the engine's rotating assembly. Installing a new set of main bearings is crucial for proper crankshaft support and oil circulation, helping to reduce friction and wear on critical internal components. This set is designed to fit right into your engine during a rebuild, making the process smoother.

This set is a solid option for anyone looking to restore their Jeep's 2.5L engine. It's a standard size, so it's meant to replace bearings that haven't been previously machined to an undersize. Remember to always check your crankshaft journals for wear and ensure they are within factory specifications before installing new bearings.