1956-1964 Ford and Mercury. Y-Block V8 WATER PUMP PULLEY For 292-312 Engines. This is a 3-Sheave pulley which I believe is part number B6A-8509-B and used on A/C Equipped cars. This is an ORIGINAL FORD PART. Measures approx. 6 13/16" O.D. - 3 1/2" overall depth. 3/8" belt width on all grooves. This pulley is in great condition. No real rust or pitting. Not bent or warped. No dents or dings or cracks. Please email with any questions. 042721-14 WE HAVE AN store WITH THOUSANDS OF ORIGINAL FORD PARTS. CHECK IT OUT.