Federal Mogul 4020A40 Sealed Power Main Bearing Set 0.040 Undersize

The Federal Mogul Sealed Power 4020A40 is a main bearing set ground to 0.040" (40 thou) undersize, designed for use in engines where crankshaft journals have been machined to restore worn or damaged surfaces. This undersize specification ensures the proper oil clearance and fit required for a reliable, long-lasting engine rebuild.

Manufactured under Federal-Mogul's trusted Sealed Power brand, these main bearings combine advanced materials and precision engineering to meet or exceed original equipment standards. The steel-backed construction with copper-lead overplate delivers excellent load capacity, conformability, and corrosion resistance under demanding operating conditions.

Key Features:

• 0.040" undersize for use with reground crankshafts
• Steel-backed construction with copper-lead overplate for superior durability
• Precision-fit half-shell design for accurate installation and consistent oil clearance
• Application-specific lining materials engineered for endurance
• Manufactured to OE tolerances for dependable performance in rebuilt engines
• Full bearing set included for complete main journal coverage

The Sealed Power line of engine bearings is a go-to choice for professional engine builders and rebuilders seeking quality aftermarket components. The 4020A40 is the 0.040" undersize variant in the 4020 series, complementing standard and other undersize options available in the same family.