What does the +0.25mm sizing mean for these bearings?

The +0.25mm sizing indicates that these bearings are designed for use when the crankshaft journals have been machined down by 0.25mm. This is a common practice during engine rebuilds to ensure proper oil clearance and a tight fit.

What is the construction of these main bearings?

These main bearings are made with a bimetal construction, featuring an aluminum silicon base. This material is chosen for its ability to handle engine heat and wear effectively.

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 for a complete installation on the specified Cummins B-Series L4 engine.

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Specifications

Brand: King Engine Bearings
Part #: MB5006SI0.25
UPC: 611500470677

King Engine Bearings Cummins B-Ser. L4 (Size +0.25mm) Main Bearing Set

Name: King Engine Bearings Cummins B-Ser. L4 (Size +0.25mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-cummins-b-ser-l4-size-0-25mm-main-bear-t14-770448
Price: 61.11 USD
Availability: BackOrder

$61.11

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King Engine Bearings Cummins B-Series L4 main bearing set. Size +0.25mm.

Key Features

Fits Cummins B-Series L4 engines.
Main bearing set for engine rebuilding.
Constructed with a bimetal aluminum silicon base.
Bearings are +0.25mm undersize for machined crankshafts.

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About this part

Product Details

King Engine Bearings is known for making well-built engine components, and this main bearing set for the Cummins B-Series L4 engine is no exception. If you're rebuilding the bottom end of your Cummins B-Series L4, these main bearings are a critical part of ensuring smooth operation and longevity.

This set features a bimetal construction with an aluminum silicon base. This material choice helps manage heat and wear effectively within the engine. The bearings in this set are sized at +0.25mm, meaning they are intended for use when the crankshaft journals have been machined to this specific undersize during an engine rebuild. This ensures a proper, snug fit for optimal oil clearance and performance.