What does the '+.002 OS/OD' sizing mean for these bearings?

The '+.002 OS/OD' designation means these bearings are 0.002 inches larger in outside diameter than standard size. This is important because it indicates they are intended for use when the engine's main housing bore has been machined to a corresponding oversize, or if the crankshaft journals have been ground undersize to match.

What is the material construction of these main bearings?

These main bearings are made with a bimetal construction. They feature an aluminum silicon base, which is chosen for its good wear characteristics and ability to maintain proper lubrication.

Are these bearings sold individually or as a set?

This product is a main bearing set, meaning it includes all the necessary main bearings required to replace them for one engine. You receive the complete set needed for the job.

Specifications

Brand: King Engine Bearings
Part #: MB5835SI1.0
UPC: 611500603136

King Engine Bearings Chevrolet 121Ci/Ln2 134Ci Housing Bore +.002 (Size +1.0mm) Main Bearing Set

Name: King Engine Bearings Chevrolet 121Ci/Ln2 134Ci Housing Bore +.002 (Size +1.0mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-chevrolet-121ci-ln2-134ci-housing-bore-t14-771006
Price: 53.68 USD
Availability: BackOrder

$53.68

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Fits 1990-2002 Chevrolet Cavalier. This main bearing set is +.002 undersize for a precise fit during engine rebuilds.

Key Features

Fits 1990-2002 Chevrolet Cavalier, 1990-1991 Chevrolet Beretta, 1990-1991 Chevrolet Corsica, 1995-2003 Chevrolet S10, and 2000-2003 GMC Sonoma.
This is a main bearing set for Chevrolet 121ci and LN2 134ci engines.
The bearings are +.002 inch (1.0mm) undersize, designed for use with a machined crankshaft.
Features a bimetal construction with an aluminum silicon base for good wear resistance.
Direct replacement for the MB5088SI in the specified +.002 OS/OD size.

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About this part

Product Details

This main bearing set from King Engine Bearings includes the necessary components to replace the main bearings in your Chevrolet 121ci or LN2 134ci engine. These bearings are specifically sized at +.002 inch (1.0mm) undersize, which is crucial for achieving the correct clearances when rebuilding an engine, especially if the crankshaft has been machined to match.

Constructed with a bimetal design featuring an aluminum silicon base, these bearings are built for durability and reliable performance. They are the +.002 OS/OD (oversize/overdiameter) version of the MB5088SI, ensuring a proper fit within the housing bore. Using the correct size bearings is essential for maintaining oil pressure and ensuring the crankshaft spins smoothly within the engine block.