Federal Mogul 6634M10 Engine Crankshaft Main Bearing Set Undersize - 010

The Federal-Mogul 6634M10 is a complete engine crankshaft main bearing set ground to .010" undersize, designed for use during engine rebuilds where the crankshaft journals have been reground .010" below standard dimensions. Federal-Mogul is a trusted OEM and aftermarket supplier of precision engine bearings used across a wide range of domestic and import applications.

Key Features:

• .010" Undersize (10) — engineered for use with crankshafts reground .010" under standard journal diameter
• Aluminum alloy bearing construction provides excellent corrosion resistance and a low rate of wear under normal operating conditions
• Steel-backed shell design ensures a precise, stable fit within the bearing housing bores
• Manufactured to tight dimensional tolerances for proper oil clearance and reliable crankshaft support
• Complete set includes all main bearing shells required for full engine installation
• Meets or exceeds OEM specifications for journal diameter, wall thickness, and surface finish

Federal-Mogul main bearing sets are a go-to choice for professional engine rebuilders and performance enthusiasts seeking dependable, dimensionally accurate bearings. The 6634M10 is the .010" undersize version of the 6634M base part number; also available in standard and other undersizes for various crankshaft grind specifications.