OER 14546 Features:

Reproduction water pump pulley for 1969-78 Chevrolet small block or big block passenger car and 1973-78 Chevrolet and GMC truck models. This is a single groove pulley that measures approximately 6-1/4" in diameter. OE number 3995631 is stamped into the pulley. Additional Information Technical Specifications 6-1/4" outside diameter1-7/8" depthFor use on models without air conditioningSingle groove pulley 6-1/4" outside diameter 1-7/8" depth For use on models without air conditioning Single groove pulley