What does the +0.75mm size mean for these bearings?

The +0.75mm designation indicates that these bearings are intended for use when the engine's crankshaft connecting rod journals have been machined down by 0.75mm. This is a common practice during engine rebuilding to remove wear or minor damage from the original journals.

What is the construction of these King Engine Bearings?

These bearings feature a bimetal construction. They utilize an aluminum silicon base, which is a common and effective material for engine bearings due to its wear resistance and ability to handle load.

Are these bearings a direct fit for my engine?

These bearings are a direct fit for the specified General Motors 2.3L L40 and LD2 engines, provided the crankshaft journals have been machined to the correct +0.75mm undersize. Always confirm your engine code and verify crankshaft journal condition and size before installation.

Specifications

Brand: King Engine Bearings
Part #: CR4059SI0.75
UPC: 611500441462

King Engine Bearings General Motors 138Ci 2.3L L40/Ld2 16V (Size +0.75mm) Connecting Rod Bearing Set

Name: King Engine Bearings General Motors 138Ci 2.3L L40/Ld2 16V (Size +0.75mm) Connecting Rod Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-general-motors-138ci-2-3l-l40-ld2-16v--t14-769554
Price: 56.35 USD
Availability: BackOrder

$56.35

On Backorder — Expected to ship by Sep 5, 2026

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King Engine Bearings connecting rod bearing set for General Motors 2.3L L40/LD2 engines. Size +0.75mm.

Key Features

Fits General Motors 138ci 2.3L L40 and LD2 16V engines.
Bearing size is +0.75mm, intended for use with machined crankshaft journals.
Constructed with a bimetal design featuring an aluminum silicon base.
Designed for connecting rod applications.
Compatible with a range of vehicles including Buick Skylark, Chevrolet Cavalier, and Pontiac Grand Am.

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About this part

Product Details

If you're rebuilding the bottom end of a General Motors 2.3L L40 or LD2 engine, these King Engine Bearings connecting rod bearings are a solid option. They are specifically sized at +0.75mm, meaning they're designed to be used when the crankshaft journals have been machined down by 0.75mm to clean up wear or damage. These bearings are built with a bimetal construction, using an aluminum silicon base, which helps them handle the stresses of engine operation.

This set is designed to fit a range of vehicles, including models like the Buick Skylark, Chevrolet Cavalier, and Pontiac Grand Am from the late 80s and early 90s. King Engine Bearings is a well-known name in the performance and rebuilding world, and these bearings are made to meet the demands of an engine rebuild. They are a direct replacement for the original bearings, assuming the crankshaft has been properly machined to the +0.75mm size.