Federal Mogul 6645MA20 Engine Main Bearing Set Oversize - 0.020

The Federal Mogul 6645MA20 is an engine main bearing set ground to a +0.020" oversize specification, designed for use during engine rebuilds where crankshaft journals have been machined undersize. Federal-Mogul is a trusted OEM-level supplier of precision engine components, delivering the same quality standards found in factory-original applications.

Key Features:

• +0.020" oversize main bearing set for use with reground crankshafts
• Manufactured by Federal-Mogul, a globally recognized OEM engine parts supplier
• Precision tri-metal or bi-metal construction for superior wear resistance and durability
• Engineered to maintain proper oil film clearances critical to crankshaft longevity
• Meets or exceeds original equipment specifications
• Suitable for professional engine rebuilding applications

When rebuilding an engine with a reground crankshaft, installing the correct oversize main bearings is essential for maintaining proper oil clearance and ensuring long-term engine health. The Federal-Mogul 6645MA20 delivers the precision and reliability needed for a successful engine rebuild.