What does '0.020 Oversized' mean for these bearings?

This means the bearings are slightly larger than standard size by 0.020 inches. This is used when the crankshaft journals have been machined down (ground) to a specific undersize, and these oversized bearings are needed to restore the correct oil clearance.

What is the advantage of the bi-metal aluminum alloy construction?

This type of construction offers good conformability to the crankshaft and is designed for medium-load applications, providing reliable performance for engines like the Jeep 4.0L.

Are these bearings environmentally safe?

Yes, these bearings are made with a lead-free composite material, making them an environmentally safe option.

Specifications

Brand: King Engine Bearings
Part #: MB7719SI020
UPC: 611500462436

King Engine Bearings AMC / JEEP 242CI 4.0L POWER-TEC (Size 0.20 Oversized) Main Bearing Set

Name: King Engine Bearings AMC / JEEP 242CI 4.0L POWER-TEC (Size 0.20 Oversized) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-amc-jeep-242ci-4-0l-power-tec-size-0-2-t14-567018
Price: 73.32 USD
Availability: BackOrder

$73.32

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King Engine Bearings AMC / JEEP 242CI 4.0L POWER-TEC (Size 0.20 Oversized) Main Bearing Set. Essential for engine rebuilds needing precise clearances.

Key Features

Fits AMC / JEEP 242CI 4.0L POWER-TEC engines.
Main bearing set is 0.020 inch oversized.
Constructed with a lead-free, environmentally safe composite.
Features a bi-metal aluminum alloy material.
Ideal for medium-load engine applications.

⚠️ 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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About this part

Product Details

If you're rebuilding the bottom end of your AMC or Jeep 4.0L engine, getting the main bearings right is crucial for proper oil pressure and crankshaft support. This set from King Engine Bearings is designed for the 242ci Power-Tec engine, offering a specific solution for your rebuild.

King specializes in bearings, and this set is made with a lead-free, environmentally safe composite material. It's a bi-metal aluminum alloy construction that's well-suited for medium-load engines like the Jeep 4.0L. These bearings are 0.020 inch oversized, which is important if your crankshaft journals have been machined to match this size during a rebuild. Using the correct bearing size ensures the proper oil clearance between the crankshaft and the block, which is vital for engine longevity and performance.