What is the purpose of the +.005mm sizing on these bearings?

The +.005mm sizing refers to an undersize specification for the bearing journal. This is crucial for achieving the correct oil clearance between the crankshaft and the main bearing during an engine rebuild. It's important to verify this clearance requirement for your specific engine build.

What does 'pmax black' refer to in the product description?

The 'pmax black' designation indicates that these bearings are part of King's racing line. They utilize a tri-metal construction that is engineered for higher performance and increased durability under demanding conditions, often found in racing applications.

Are these bearings a direct replacement for standard main bearings?

These are a performance-oriented replacement for standard main bearings, specifically designed for the housing bore of Subaru EJ20, EJ22, and EJ25 engines. The +.005mm sizing is a specific requirement that must match your crankshaft journal specifications for proper installation and function.

Specifications

Brand: King Engine Bearings
Part #: MB5740XPG.026
UPC: 611500575693

King Engine Bearings Subaru EJ20/EJ22/EJ25 Housing Bore Main Bearing Set - Size +.005mm

Name: King Engine Bearings Subaru EJ20/EJ22/EJ25 Housing Bore Main Bearing Set - Size +.005mm
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-subaru-ej20-ej22-ej25-housing-bore-mai-t14-82117
Price: 178.01 USD
Availability: BackOrder

$178.01

On Backorder — Expected to ship by Jun 14, 2026

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

King Engine Bearings main bearing set for Subaru EJ20/EJ22/EJ25 engines. Size +.005mm. A popular choice for engine rebuilds.

Key Features

Fits Saab 9-2X (2005-2006), Subaru Baja (2003-2006), Forester (1998-2016), Impreza (1995-2016), Legacy (1990-2013), Outback (2000-2015), WRX (2015), and WRX STI (2015-2017).
Main bearing set for Subaru EJ20, EJ22, and EJ25 engines.
Size is +.005mm, ensuring proper oil clearance for engine rebuilds.
Features King's pmax black tri-metal racing material for improved durability and performance.
Designed for the housing bore of compatible Subaru engines.

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About this part

Product Details

If you're rebuilding the engine in your Subaru EJ20, EJ22, or EJ25, these main bearings from King Engine Bearings are a solid option. They are specifically sized at +.005mm, which is important for ensuring proper clearances during your rebuild. This set is part of King's pmax black racing line, meaning they use a tri-metal construction designed for higher performance applications.

These bearings are designed to fit the housing bore of your Subaru engine, and the +.005mm sizing is a critical detail for achieving the correct oil clearance. The pmax black material is known for its durability and ability to handle increased loads, making them a popular choice for enthusiasts looking for improved performance from their engine rebuild. They are a direct replacement for the MB5382AM race bearings, offering a similar level of performance.

This set is compatible with a wide range of Subaru models, including the Forester, Impreza, Legacy, and Outback, as well as the Saab 9-2X and Subaru Baja. Ensure you have the correct +.005mm clearance requirement for your specific engine build before ordering.