GM Genuine Parts Engine Crankshafts are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

• Crankshaft, 3.622 in Stroke, Internal Balance, 58X Reluctor, Forged Steel, 1-Piece Seal, GM LS-Series
• Nodular Iron

Specifications

Brand Chevrolet Performance Part Number 12588614 1 / 2 Piece Rear Main Seal 1-Piece Stroke (in) 3.622 in Main Journal Diameter 2.559 in Rod Journal Diameter 2.100 in Intended Balance Internal Minimum Rod Length 6.098 in Snout Style Standard Reluctor Wheel Included Yes Reluctor Wheel Tooth Quantity 58 Material Style Cast Material Steel Color Natural Finish Natural Quantity Each