What does the +0.50mm sizing mean for these bearings?

The +0.50mm designation indicates that these bearings are slightly larger than standard size. They are intended for use when the engine's crankshaft journals have been machined down by 0.50mm during a rebuild process to ensure proper oil clearance.

What is a bimetal bearing construction?

Bimetal bearings, like these, use two different materials bonded together. Typically, this involves a steel backing for strength and a bearing surface material, such as aluminum alloy in this case, which is good at handling friction and heat.

Do I need any special tools to install these main bearings?

Installation of main bearings typically requires specialized tools such as a bearing spreader and a torque wrench to ensure proper seating and torque specifications are met. Always refer to the vehicle's service manual for detailed installation procedures.

Specifications

Brand: King Engine Bearings
Part #: MB427AM0.5
UPC: 611500154638

King Engine Bearings Chevrolet 173 V6 (Size +0.50mm) Main Bearing Set

Name: King Engine Bearings Chevrolet 173 V6 (Size +0.50mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-chevrolet-173-v6-size-0-50mm-main-bear-t14-770386
Price: 43.43 USD
Availability: BackOrder

$43.43

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King Engine Bearings Chevrolet 173 V6 (Size +0.50mm) Main Bearing Set. A bimetal bearing set for engine rebuilds.

Key Features

Fits Buick Century, Chevrolet Camaro, Pontiac Firebird, and many other vehicles with the Chevrolet 173 V6 engine.
This is a main bearing set, sized +0.50mm for use in engines that have been machined to that specification.
Constructed with a bimetal design, utilizing an aluminum base for durability and performance.
Designed to provide reliable crankshaft support during engine operation.

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About this part

Product Details

King Engine Bearings is well-known for making solid engine bearings, and this main bearing set is no different. This set is specifically for Chevrolet 173 V6 engines and is sized +0.50mm, meaning it's meant for engines that have already been machined to that size during a rebuild. These are bimetal bearings, featuring an aluminum base, which is a common and effective material for handling the loads and temperatures found in an engine's bottom end.

If you're rebuilding the engine in a vehicle like a Buick Century, Chevrolet Camaro, or Pontiac Firebird from the early to mid-80s, this bearing set is designed to fit right in. They are built to handle the daily demands of your engine, providing a reliable surface for the crankshaft to rotate on. Having the correct size bearing is crucial for proper oil clearance, which is essential for engine longevity and performance.