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

The +0.25mm sizing indicates that these bearings are intended for use when the crankshaft journals have been machined down by 0.25mm. This is common during an engine rebuild to clean up wear or damage on the crankshaft.

What is the King Engine Bearings XP series?

The XP series from King Engine Bearings uses a specialized overlay material. This design helps the bearings handle higher loads and temperatures compared to standard bearings, offering improved durability.

Are these bearings a direct replacement for stock engines?

These bearings are +0.25mm oversized. They are not a direct replacement for a stock, unmachined crankshaft. They are designed for engines where the crankshaft has been machined to a +0.25mm undersize.

Specifications

Brand: King Engine Bearings
Part #: MB5179XP0.25
UPC: 611500592997

King Engine Bearings Opel C20Xe/X18Xe/X22Xe (Size +0.25mm) Main Bearing Set

Name: King Engine Bearings Opel C20Xe/X18Xe/X22Xe (Size +0.25mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-opel-c20xe-x18xe-x22xe-size-0-25mm-mai-t14-770515
Price: 143.81 USD
Availability: BackOrder

$143.81

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King Engine Bearings Opel C20Xe/X18Xe/X22Xe (Size +0.25mm) Main Bearing Set. This set is +0.25mm oversized for engine rebuilding.

Key Features

This set includes main bearings for Opel C20Xe, X18Xe, and X22Xe engines.
The bearings are +0.25mm oversized, intended for use with a machined crankshaft.
King Engine Bearings XP series features an enhanced overlay for improved load and temperature handling.
Proper oil clearance is maintained when installed on a crankshaft ground to the +0.25mm specification.

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About this part

Product Details

This King Engine Bearings main bearing set includes the main bearings needed for an engine rebuild, specifically sized at +0.25mm. These bearings are crucial for the rotating assembly, providing a smooth surface for the crankshaft to spin within the engine block. When rebuilding an engine, especially if the crankshaft has been machined, using bearings of the correct size is essential for proper oil clearance and engine longevity.

The XP series from King Engine Bearings is known for its enhanced performance characteristics. These bearings utilize a specialized overlay material designed to handle higher loads and temperatures, making them a solid choice for performance applications or when you need a more robust bearing than standard OE replacements. The +0.25mm sizing indicates these are intended for use when the crankshaft journals have been ground down by 0.25mm during a rebuild to clean up wear or damage. Ensuring the correct oil clearance with these bearings is key to preventing premature wear and ensuring the engine runs smoothly.