What does 0.030 over mean for these main bearings?

This means the bearings are manufactured to be 0.030 inches smaller in diameter than standard. They are designed to be used with a crankshaft that has been machined down by 0.030 inches to account for wear or damage.

What vehicles does this Omix main bearing set fit?

This set fits many Jeep models from 1972 to 1990, including CJ5, CJ7, CJ6, Scrambler, Commando, J10, J20, Cherokee, Wagoneer, Grand Wagoneer, Comanche, and Wrangler, as long as they have a 3.8L, 4.0L, or 4.2L engine and a 0.030 inch undersize crank.

What is covered under the limited 5-year warranty?

The limited 5-year warranty covers defects in materials and workmanship. Specific terms and conditions apply, and it's recommended to review the manufacturer's warranty documentation for full details.

OMIX

Specifications

Brand: OMIX
Part #: 17465.38
UPC: 804314130268

OMIX

Omix Main Bearing Set .030 72-90 Jeep CJ & Wrangler

Name: Omix Main Bearing Set .030 72-90 Jeep CJ & Wrangler
Brand: OMIX
Price: 140.63 USD
Availability: InStock

$140.63

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Omix Main Bearing Set .030 72-90 Jeep CJ & Wrangler. Essential for engine rebuilds to restore performance.

Key Features

Fits 1972-1990 Jeep CJ, Cherokee, Wagoneer, Wrangler, Comanche, and Grand Wagoneer models with 3.8L, 4.0L, and 4.2L engines.
This is a 0.030 inch undersize main bearing set, intended for use with a machined crankshaft.
Essential for restoring engine performance during a rebuild.
Includes a complete set of main bearings for one engine.
Backed by a limited 5-year manufacturer 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?

Product Details

When you're rebuilding a worn-out engine, replacing the main bearings is a critical step to getting your Jeep back to its original performance. This main bearing set from Omix is designed to fit a wide range of Jeep models from 1972 through 1990, including popular vehicles like the CJ series, early Cherokee and Wagoneer, and the YJ Wrangler, when equipped with 3.8, 4.0, or 4.2 liter engines.

These bearings are 0.030 inches undersize, meaning they are intended for use with a crankshaft that has been machined down by that amount. This is a common practice when a crankshaft has been worn or damaged and needs to be resurfaced to a standard undersize. Installing new bearings along with a properly machined crankshaft is essential for proper oil pressure and smooth engine operation. This set includes all the main bearings needed for a complete engine rebuild.

Remember that installing engine bearings typically requires the engine to be disassembled and the crankshaft to be removed and machined. Always refer to the manufacturer's installation instructions and service manual for the correct procedures and specifications.