Billet Aluminum Circulating Water Pump 3 Groove V-Belt Pulley 

Chevy V6/V8 Billet Aluminum Circulating Water Pump 3 Groove V-Belt Pulley

This beautiful show quality pulley is machined from 6061-T6 Aluminum and polished to a high lustre. This pulley is Direct replacement for Mercruiser pulley 15120T and fits all 4.3L-V6, 305/350 V8, as well as 454/502 BBC V8's. The diameter is 5.5" and the mounting bolt centers are 2-1/8"