Enginetech BC306J020 Main Bearing Set Ford - 0.020 6.6L 400 5.8L 351M 351W

The Enginetech BC306J020 is a complete main bearing set engineered for Ford 351M (Modified), 351W (Windsor), and 400 big-block V8 engines. This set is ground to a 0.020" undersize specification, making it the correct replacement choice for engines that have had their crankshaft journals reground to the standard first undersize during a rebuild.

Key Features:

• Size: 0.020" undersize (020) for reground crankshafts
• Precision-manufactured to restore proper oil clearances and bearing crush
• Engineered for high-cycle durability in rebuilt and performance engine applications
• Compatible with Ford 5.8L 351W Windsor and 5.8L/6.6L 351M Modified V8 engines
• Complete main bearing set — includes all main journal bearings required for a full engine rebuild
• Meets or exceeds OEM specifications for dimensional accuracy and material quality

Application: Designed for use in 1977–1991 Ford vehicles equipped with the 6.6L (400 CID) or 5.8L (351 CID) 351M Modified and 5.8L 351W Windsor V8 engines.

Enginetech is a trusted supplier of engine rebuild components, offering a comprehensive line of bearings, gaskets, and rotating assembly parts for domestic and import applications. The BC306J020 is an ideal choice for professional engine builders and serious DIY rebuilders seeking reliable, spec-correct main bearings.