What does '0.5 undersize' mean for these bearings?

The '0.5 undersize' designation indicates that these bearings are manufactured to be slightly smaller than the standard size. This is typically done to accommodate a crankshaft that has been ground down by 0.0005 inches during a rebuild or repair process.

What is the pmax Black racing line?

The pmax Black racing line refers to King Engine Bearings' high-performance tri-metal bearing material. It's designed to offer enhanced load capacity and durability for racing engines that experience higher stresses than typical street applications.

Do these bearings come with installation hardware?

This product is for the main bearing set only. Installation hardware, such as main bearing bolts or crankshaft seals, are typically sold separately and should be checked against your vehicle's service manual for specific requirements.

Specifications

Brand: King Engine Bearings
Part #: MB5220XP0.5
UPC: 611500542244

King Subaru WRX/STi EJ20 EJ22 EJ25 Flange #3 Position (Size 0.5) Performance Main Bearing Set

Name: King Subaru WRX/STi EJ20 EJ22 EJ25 Flange #3 Position (Size 0.5) Performance Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-subaru-wrx-sti-ej20-ej22-ej25-flange-3-position-size-0-t14-4333169
Price: 103.54 USD
Availability: BackOrder

$103.54

On Backorder

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Fits many Subaru and Saab models. King Subaru EJ20/EJ22/EJ25 performance main bearing set with pmax Black racing line.

Key Features

Fits 1990-2017 Subaru and 2005-2006 Saab vehicles.
Designed for Subaru EJ20, EJ22, and EJ25 engines.
Features King's pmax Black racing line with tri-metal construction.
This is the flange #3 position main bearing set.
Bearings are 0.5 undersize, suitable for crankshaft regrinding.
Engineered for performance and racing applications.

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About this part

Product Details

The pmax Black racing line on these main bearings means they're built for demanding use, featuring a tri-metal construction that handles higher loads. These are specifically for the flange #3 position and are 0.5 undersize, which is important if you're rebuilding or refreshing an EJ20, EJ22, or EJ25 engine. This set is designed to fit a range of Subaru and Saab vehicles, including models like the Forester, Impreza, Legacy, and Baja.

King Engine Bearings is known for making solid engine components. This particular set is an upgrade over their standard MB5220AM race bearings, offering improved performance characteristics for racing applications. When installing, remember that main bearings require careful attention to crankshaft cleanliness and proper torque specifications to ensure they perform as intended and protect your engine.