What does the +0.020 size mean for these bearings?

The +0.020 inch sizing indicates that these bearings are intended for use when the main crankshaft journals have been machined down by 0.020 inches. This is a common practice during engine rebuilding to ensure a proper fit with worn or resurfaced journals.

What is the Tri-M+ enhanced babbit overlay?

The Tri-M+ overlay is an advanced layer applied to the bearing surface. It helps to improve the bearing's ability to conform to the crankshaft and resist wear, especially under moderate loads, contributing to a longer engine life.

Are these bearings suitable for high-performance or racing engines?

These bearings are specifically noted as ideal for medium-load engines. For high-performance or racing applications, it's always best to consult King Engine Bearings' specialized performance lines or your engine builder for the most appropriate bearing choice.

Specifications

Brand: King Engine Bearings
Part #: MB7765CP020
UPC: 611500580154

King Engine Bearings GMC 4.2 Vortec L6 (Size +0.020) Main Bearing Set

Name: King Engine Bearings GMC 4.2 Vortec L6 (Size +0.020) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-gmc-4-2-vortec-l6-size-0-020-main-bear-t14-432595
Price: 205.13 USD
Availability: BackOrder

$205.13

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King Engine Bearings GMC 4.2 Vortec L6 (Size +0.020) Main Bearing Set. Ideal for medium-load engines needing a solid rebuild.

Key Features

Fits 2002-2009 Chevrolet Trailblazer, 2002-2009 GMC Envoy, and more.
Main bearing set sized +0.020 inch for machined crankshafts.
Constructed with a tri-metal copper-based material.
Features King's Tri-M+ enhanced babbit overlay for improved performance.
Designed 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 GMC 4.2 Vortec L6 engine, getting the right main bearings is crucial for a smooth-running, long-lasting build. This set from King Engine Bearings is specifically made for engines that have been machined to a +0.020 inch size, ensuring a precise fit on the crankshaft journals. King has been a specialist in engine bearings since 1960, focusing on delivering well-built components for a variety of applications.

These main bearings utilize a tri-metal copper-based material with King's Tri-M+ enhanced babbit overlay. This construction is well-suited for medium-load engines, offering reliable performance and durability. The +0.020 inch sizing means these are intended for engines where the main journals have been ground down by that amount during a rebuild or repair process. This set fits a wide range of GM SUVs, including models like the Chevrolet Trailblazer, GMC Envoy, and Isuzu Ascender.