What does '0.75mm undersize' mean for these bearings?

This means the bearings are slightly smaller than the standard size by 0.75mm. This is necessary when the crankshaft journals have been ground down (undersized) during an engine rebuild to remove wear or damage.

What is the construction of these main bearings?

These bearings are made with a bimetal construction, which uses an aluminum base. This type of material is chosen for its good performance characteristics in engine bearing applications.

Are these bearings a direct replacement for all 2A, 3A, and 4A engines?

Yes, this set is designed as a direct fit for the specified 2A, 3A, and 4A engines within the listed Toyota models and years. Ensure your crankshaft has been machined to the 0.75mm undersize specification for proper installation.

Specifications

Brand: King Engine Bearings
Part #: MB535AM0.75
UPC: 611500165634

King Engine Bearings Toyota 2A/3A/4A/(Size +0.75mm) Main Bearing Set

Name: King Engine Bearings Toyota 2A/3A/4A/(Size +0.75mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-toyota-2a-3a-4a-size-0-75mm-main-beari-t14-770663
Price: 33.48 USD
Availability: BackOrder

$33.48

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Fits 1983-1997 Toyota Corolla. King Engine Bearings main bearing set, 0.75mm undersize, for 2A, 3A, and 4A engines. Essential for engine rebuilds.

Key Features

Fits 1983-1997 Toyota Corolla, 1990-1993 Toyota Celica, and 1980-1988 Toyota Tercel.
Main bearing set for Toyota 2A, 3A, and 4A engines.
Features a bimetal construction with an aluminum base.
This set is 0.75mm undersize, intended for use with a machined crankshaft.

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About this part

Product Details

If you're rebuilding the engine in your 1983-1997 Toyota Corolla, especially one with a 2A, 3A, or 4A engine, getting the main bearings right is crucial for proper oil pressure and crankshaft support. This set from King Engine Bearings is built with a bimetal construction, using an aluminum base for good performance.

These bearings are sized 0.75mm undersize, which is important if your crankshaft has been machined down during a rebuild. King is a well-known name in engine bearings, and this set is a solid option for getting your engine back in reliable running condition. They are designed to fit right into your Toyota's specific engine block and crankshaft setup.