MAHLE MS-2258H H-Series Engine Crankshaft Main Bearing Set Subaru EJ Series #5 Thrust

The MAHLE MS-2258H is an H-Series performance crankshaft main bearing set engineered specifically for Subaru 1.8L, 2.0L, 2.2L, and 2.5L EJ-series engines. This set features the #5 position flange/thrust bearing configuration required by these horizontally-opposed engines and is supplied in standard (stock) crankshaft undersize.

Part of the legendary MAHLE Clevite H-Series performance bearing lineup, these bearings were originally developed for NASCAR racing and are equally at home in street performance and competition builds. They feature a hardened steel backing, carefully selected thin overlay material, and a medium level of eccentricity — all engineered for high-RPM durability and consistent oil film retention.

Key Features:

• H-Series performance construction with hardened steel back and thin overlay
• Full 360-degree oil grooves on upper and lower shells for improved lubrication
• Enlarged chamfers at bearing sides for greater crankshaft fillet clearance
• Manufactured without flash plating for superior seating and break-in
• High crush factor for positive bearing retention in the housing bore
• Standard (stock) crankshaft undersize; thrust bearing oversize: stock
• #5 position flange/thrust bearing for Subaru EJ-series engines
• UPC: 027067861504

The MS-2258H is an ideal choice for engine rebuilds, performance upgrades, or high-output builds on Subaru EJ-series engines. Compatible companion part: MAHLE Clevite connecting rod bearing CB-1657H.