Enginetech BC409J030 Main Bearings Set GM 4.8L 5.3L 5.7L 6.0L V8

The Enginetech BC409J030 main bearing set is engineered for GM small block V8 engines including 4.8L (293ci), 5.3L (325ci), 5.7L (346ci), and 6.0L (364ci) displacements. These precision-manufactured main bearings provide reliable crankshaft support and are designed to meet or exceed OEM specifications for durability and performance.

Key Features:

• 0.030" undersize for crankshaft reconditioning applications
• Precision-manufactured bearing shells for proper oil clearance
• Engineered for GM Gen III and Gen IV V8 engines
• High-quality bearing material for extended service life
• Complete main bearing set for engine rebuild applications

This main bearing set is ideal for engine rebuilders and performance enthusiasts working on GM truck and SUV engines. The 0.030" undersize allows for proper fitment on crankshafts that have been machined during reconditioning, ensuring optimal bearing clearances and oil film thickness for engine longevity.