What does the +0.25mm sizing mean for this bearing set?

The +0.25mm sizing indicates that these bearings are designed for a crankshaft that has been machined down by 0.25mm. This is typically done during an engine rebuild to provide a new, smooth surface for the bearings to operate on, especially if the original crankshaft has wear.

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

Main bearings support the crankshaft within the engine block. They allow the crankshaft to rotate smoothly while maintaining the correct oil clearance, which is crucial for proper lubrication and engine operation.

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 the specific engine application listed.

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Specifications

Brand: King Engine Bearings
Part #: MB4271AM0.25
UPC: 611500525650

King Engine Bearings Daewoo F8C L3 49Ci (Size +0.25mm) Main Bearing Set

Name: King Engine Bearings Daewoo F8C L3 49Ci (Size +0.25mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-daewoo-f8c-l3-49ci-size-0-25mm-main-be-t14-770372
Price: 27.08 USD
Availability: BackOrder

$27.08

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Key Features

Main bearing set for Daewoo F8C L3 49Ci engines.
Features a +0.25mm undersize, suitable for machined crankshafts.
From King Engine Bearings, a well-known manufacturer of engine bearings.

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About this part

Product Details

King Engine Bearings is known for making solid engine bearings that hold up well in demanding conditions. This main bearing set is designed for Daewoo F8C L3 49Ci engines and comes at a +0.25mm size, which is useful if you're rebuilding an engine with a slightly worn crankshaft that needs to be machined to a larger size.

These bearings are built to handle the stresses of regular engine operation. The +0.25mm sizing means they are intended for use on a crankshaft that has been ground down by 0.25mm to ensure a fresh, smooth surface for the bearings to run on. This is a common step when rebuilding an engine to restore proper clearances and oil pressure.