Enginetech BB628J020 Rod Bearing Set GM Pontiac Oldsmobile 287 324 326 350 389 400 421 428 455 - 0.020" Undersize

The Enginetech BB628J020 is a connecting rod bearing set designed for GM Pontiac and Oldsmobile engines, including the 287, 324, 326, 350, 389, 400, 421, 428, and 455 cubic inch displacements. This set is manufactured to a 0.020" undersize specification, making it ideal for use with reground crankshafts during engine rebuilds.

Advanced Aluminum-Silicon Bearing Material:

• Aluminum-silicon alloy construction — modern material that meets or exceeds the performance of traditional tri-metal designs
• High load capacity with excellent anti-friction properties including wear resistance, anti-seizure characteristics, and embeddability
• Precisely controlled parting line chamfers ensure correct oil bleed-through without sacrificing oil pressure
• Consistent bearing thickness manufactured on state-of-the-art equipment for proper oil clearances
• 0.020" undersize inside diameter for use with crankshafts ground 0.020" under standard journal diameter
• Fits GM Pontiac and Oldsmobile engines: 287, 324, 326, 350, 389, 400, 421, 428, and 455 CID

Enginetech rod and main bearings have been the trusted choice of professional engine rebuilders for over 25 years. BB628J020 is part of the BB628J series, which is also available in standard (JSTD), 0.010" (J010), and 0.030" (J030) undersizes to match your specific crankshaft grind.