What does 'STDX' size mean for these bearings?

The 'STDX' designation indicates that these are an undersize bearing set. This is common in engine rebuilding when crankshaft journals have been machined undersize to correct wear or damage. Always confirm your crankshaft journal size before ordering.

What is the PMaxBlack overlay and why is it important?

PMaxBlack is a specialized overlay applied to the bearing surface. It's designed to provide superior load capacity, meaning the bearing can withstand higher pressures and stresses without deforming or failing, which is beneficial for performance or heavily used engines.

Does this set include bearings for all main positions?

This set is specifically for the thrust position in the #5 main bearing. For a complete engine rebuild, you will need to ensure you have the correct sets for all other main bearing positions as well.

Specifications

Brand: King Engine Bearings
Part #: MB5382XPGSTDX
UPC: 611500568084

King Subaru EJ20/EJ22/EJ25 (For Thrust in #5 Position) Tri-Metal Perf Main Bearing Set - Size STDX

Name: King Subaru EJ20/EJ22/EJ25 (For Thrust in #5 Position) Tri-Metal Perf Main Bearing Set - Size STDX
Brand: King Engine Bearings
SKU: king-engine-bearings-king-subaru-ej20-ej22-ej25-for-thrust-in-5-position-tri-met-t14-280765
Price: 96.64 USD
Availability: BackOrder

$96.64

On Backorder — Expected to ship by Aug 15, 2026

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

King Subaru EJ20/EJ22/EJ25 main bearing set, size STDX. Built for superior load capacity.

Key Features

Fits 1990-2019 Subaru and 2005-2006 Saab 9-2X models with EJ20, EJ22, or EJ25 engines.
Designed for the thrust position in the #5 main bearing.
Features PMaxBlack overlay for improved load capacity.
Radialock design helps maintain optimal crush height for a secure fit.
Constructed with a tri-metal copper-based material for durability.
This is the STDX size, an undersize bearing set for engine rebuilding.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

If you're rebuilding the engine in your Subaru or Saab, especially one with an EJ20, EJ22, or EJ25 engine, getting the main bearings right is crucial for long-term reliability. This set from King Engine Bearings is specifically designed for the thrust position in the #5 main bearing, an important detail for engines that see a lot of use. King has been focused on making top-quality bearings since 1960, and this set reflects that specialization.

What sets these bearings apart is their PMaxBlack overlay, which helps them handle higher loads without failing. They also feature Radialock, a design that helps maintain the correct amount of 'crush' when installed, ensuring a snug fit. The tri-metal copper-based material is a well-known choice for its balance of strength and wear resistance in performance applications. This set is sized STDX, which is a specific undersize for engine rebuilding.

This set fits a wide range of Subaru and Saab models, including the Forester, Impreza, Legacy, Outback, Baja, and the Saab 9-2X. It's a solid option when you need dependable main bearings for your EJ engine build.