What does the +.002mm sizing mean for these bearings?

The +.002mm designation indicates that these bearings are manufactured to be 0.002 millimeters larger than standard size. This is used when the crankshaft journals have been machined undersize during an engine rebuild to ensure proper oil clearance.

What is the pMax Black material?

The pMax Black is King Engine Bearings' racing line material. It's a tri-metal construction designed for increased strength and durability, making it suitable for high-performance and demanding engine applications.

Are these bearings suitable for a stock engine rebuild?

While these are performance bearings, they can be used in a stock engine rebuild if the crankshaft journals have been machined to the +.002mm undersize. For a standard rebuild without machining, you would typically need a standard size bearing.

Specifications

Brand: King Engine Bearings
Part #: MB5739XPG
UPC: 611500575648

King Engine Bearings Subaru EJ20/EJ22/EJ25 Tri-Metal Perf Main Bearing Set - Size +.002mm

Name: King Engine Bearings Subaru EJ20/EJ22/EJ25 Tri-Metal Perf Main Bearing Set - Size +.002mm
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-subaru-ej20-ej22-ej25-tri-metal-perf-m-t14-4370063
Price: 134.16 USD
Availability: InStock

$134.16

In Stock

King Engine Bearings Subaru EJ20/EJ22/EJ25 Tri-Metal Perf Main Bearing Set - Size +.002mm. A +.002mm undersize set for performance Subaru engines.

Key Features

Fits 1990-2017 Subaru Impreza, Legacy, Outback, Forester, Baja, WRX, WRX STI, and 2005-2006 Saab 9-2X.
Main bearing set with +.002mm undersize for machined crankshaft journals.
Features King's pMax Black tri-metal construction for enhanced durability.
Designed for Subaru EJ20, EJ22, and EJ25 engine blocks.
Part of King's racing line, suitable for performance applications.

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About this part

Product Details

The pMax Black tri-metal construction in this King Engine Bearings main bearing set is a key feature for performance Subaru EJ20, EJ22, and EJ25 engines. This specific set is manufactured to a +.002mm undersize, meaning it's intended for crankshaft journals that have been machined to this specific dimension during an engine rebuild. This precise sizing is crucial for establishing the correct oil clearance, which is vital for proper lubrication and bearing longevity, especially in modified or high-performance applications.

These bearings are designed for the housing bore of your Subaru engine, fitting a range of vehicles like the Subaru Impreza, Forester, Legacy, and Outback, as well as the Saab 9-2X. The pMax Black material is a racing line offering from King, indicating a focus on durability and performance under demanding conditions. When rebuilding or refreshing your Subaru's engine, using bearings that are precisely sized and constructed from advanced materials like these can make a notable difference in the engine's health and performance.