MAHLE MS-2258A-.25mm Main Bearing Set for Subaru EJ Series Engines

The MAHLE MS-2258A-.25mm is a precision-engineered main bearing set designed specifically for Subaru EJ series engines from 1990 to 2005. This undersize bearing set features a -0.25mm (-.010") sizing, making it ideal for crankshaft regrinding applications or worn journal surfaces that require machining to restore proper clearances.

Key Features:

• Engineered specifically for Subaru EJ series engines (EJ18, EJ20, EJ22, EJ25)
• -0.25mm undersize for reground or machined crankshafts
• High-performance tri-metal construction for superior durability
• Precision manufacturing ensures proper oil clearance and fitment
• OE quality from MAHLE, a trusted original equipment supplier
• Complete main bearing set for full crankshaft rebuild

MAHLE bearings are manufactured to strict tolerances using advanced materials and coatings that provide excellent wear resistance, reduced friction, and optimal load distribution. This bearing set is essential for engine rebuilds where the crankshaft has been machined undersize or when standard bearings no longer provide adequate clearance due to journal wear.

Application: Compatible with Subaru EJ series engines found in Impreza, Legacy, Forester, Outback, and other models from 1990-2005. Always verify crankshaft journal measurements before installation to ensure proper bearing selection.