Enginetech Part Number: 129100 Crankshaft Kit With Bearings Fits 92-99 GM/Chevrolet 4.3L 262 V6 12V VIN'B,N,W,X,Z' - 4.000in Bore Forging Numbers: 480, 685, 5480, 10055480, 10105865 Does Not Replace Forging Number 255 Has a balance hole drille by #1 rod journal. Lightweight crank to be used with late style (light) pistons.