What does '0.030 Oversized' mean for these bearings?

This means the bearings are designed to fit a crankshaft that has been machined down by 0.030 inches from its original size. It's important to match the bearing size to the machined crankshaft journal size for proper oil clearance.

What kind of engine load are these bearings best suited for?

These bearings are ideal for medium-load engine applications. They utilize a lead-free composite material and bi-metal aluminum construction.

Are these bearings environmentally friendly?

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

Specifications

Brand: King Engine Bearings
Part #: MB7719SI030
UPC: 611500462443

King Engine Bearings AMC / JEEP 242CI 4.0L POWER-TEC (Size 0.30 Oversized) Main Bearing Set

Name: King Engine Bearings AMC / JEEP 242CI 4.0L POWER-TEC (Size 0.30 Oversized) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-amc-jeep-242ci-4-0l-power-tec-size-0-3-t14-480594
Price: 73.32 USD
Availability: BackOrder

$73.32

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King Engine Bearings AMC / JEEP 242CI 4.0L POWER-TEC (Size 0.30 Oversized) Main Bearing Set. For rebuilding medium-load engines.

Key Features

This is a main bearing set for AMC/Jeep 242ci 4.0L Power-Tec engines.
The set is 0.030 inches oversized, intended for use with a crankshaft machined to this size.
Features a lead-free, environmentally safe composite material.
Ideal for medium-load engine applications.
Constructed with a bi-metal aluminum material.

⚠️ 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. These King Engine Bearings are designed for the 242 cubic inch Power-Tec engine, and this set is 0.030 inches oversized, meaning it's intended for crankshafts that have been machined down to match this size. King has been specializing in bearings since 1960, focusing on making them as good as they can be.

This particular set uses a lead-free composite material that's environmentally safe and works well in medium-load applications. The bi-metal aluminum construction helps with heat transfer and durability. When you're putting an engine back together, especially after a rebuild where the crankshaft journals have been ground, using bearings that match the machined size is key to proper oil clearance and long engine life.