MAHLE MS-2269H-.25mm H-Series Main Bearing Set Ford 6.4L Power Stroke Diesel .25mm Undersize

The MAHLE MS-2269H-.25mm is a high-performance, competition-grade H-Series main bearing set engineered for the Ford 6.4L Power Stroke diesel engine. This .25mm undersize set is designed for engines where the crankshaft journals have been ground to a .25mm undersize specification during a rebuild.

H-Series Performance Design:

• High-Crush Construction: Features a high-crush design with medium-level eccentricity to ensure maximum protection and consistent oil film thickness under extreme crankshaft loads
• Hardened Steel Backing: A hardened steel back provides superior structural support during high-RPM and high-boost operation
• Tri-Metal Construction: Lead-tin-copper overlay delivers excellent conformability, embedability, and wear resistance
• No Flash Plating: Made without flash plating for improved bearing seating and faster break-in compared to standard P-Series bearings
• Enlarged Chamfers: Provides greater crankshaft fillet clearance, making these bearings ideal for use with aftermarket or reground crankshafts with oversize fillets

H-Series vs. P-Series: The H-Series (MS-2269H) is the preferred choice for competition engines, high-RPM builds, extreme boost applications, drag racing, and sled pulling where bearing crush and oil film consistency are critical. For standard street/strip performance rebuilds using stock crank fillets, see the P-Series MS-2269P.

Builder's Note: H-Series bearings are recommended for use with crankshafts that have oversize fillets and engines operating in the medium-to-high RPM range. Always verify oil clearances with a micrometer prior to final assembly. MAHLE Clevite is a globally recognized OEM and aftermarket engine bearing manufacturer trusted by professional engine builders worldwide.