What does it mean that these bearings are 0.010 undersize?

This means the bearings are manufactured to be 0.010 inches smaller in diameter than a standard, or '0.000' undersize, bearing. This size is used when the engine's crankshaft has been turned down (machined) by 0.010 inches to remove wear or damage. Always match your bearing size to your crankshaft journal size.

What is the main function of main bearings in an engine?

Main bearings are critical components that support the crankshaft within the engine block. They allow the crankshaft to rotate smoothly while maintaining precise oil clearance, which is essential for proper lubrication and preventing excessive wear.

Do I need to replace all the main bearings if one is worn?

Yes, it is standard practice to replace all main bearings as a set during an engine rebuild. This ensures consistent clearances and proper support for the entire crankshaft, contributing to the overall health and longevity of the engine.

Clevite Main Bearing Set MS1733P10 - 1962-1993 GM 2.5L 4-Cyl

Name: Clevite GM Pontiac/Chevrolet 151 2.5L 153 4 Cyl 1962-93 Main Bearing Set
Brand: Clevite
SKU: clevite-clevite-gm-pontiac-chevrolet-151-2-5l-153-4-cyl-1962-93-main-bearing-set-t14-58321
Price: 108.85 USD
Availability: BackOrder

Clevite GM Pontiac/Chevrolet 151 2.5L 153 4 Cyl 1962-93 Main Bearing Set

$108.85

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Clevite main bearing set for 1962-1993 GM 2.5L 4-cylinder engines. Undersize 0.010. Essential for engine rebuilds.

Key Features

Fits 1962-1993 GM Pontiac/Chevrolet vehicles with 151 2.5L or 153 4-cylinder engines.
Main bearing set designed to support the crankshaft within the engine block.
This set is 0.010 inches undersize, intended for use with a crankshaft machined to that specification.
From Clevite, a popular brand for engine components.
Essential for engine rebuilds and repairs on compatible vehicles.

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Product Details

If you're rebuilding the engine in your classic GM vehicle, getting the main bearings right is crucial for smooth operation and longevity. This Clevite Main Bearing Set, part number MS1733P10, is designed for a wide range of GM, Pontiac, and Chevrolet vehicles from 1962 through 1993, specifically those equipped with the 151 cubic inch (2.5L) or 153 cubic inch 4-cylinder engine. These bearings are a key component in your engine's rotating assembly, supporting the crankshaft and ensuring it spins true within the block.

This set is manufactured by Clevite, a well-known name in engine components, and comes 0.010 inches undersize, which is important if your crankshaft has been machined to match this specification during a previous rebuild or repair. Proper bearing clearance is vital; too much and you'll have excessive oil pressure loss and potential knocking, too little and you risk scoring the crankshaft and bearing surfaces. Clevite bearings are known for their solid construction, aiming to provide reliable performance for your engine rebuild.

When you're putting an engine back together, using parts that fit right and meet the necessary specifications is paramount. This main bearing set is a popular choice for mechanics and DIYers alike when working on these particular 4-cylinder GM engines, helping to ensure a solid foundation for your rebuilt powerplant.