Single sheave pulley 6-61/64 inches in diameter. This pulley is designed to run on the inner most belt plane next to the water pump. When measured from the front of the water pump hub (or inside of the pulley) to the center line of the belt sheave the measurement is 2-5/16 inches.
Applications:
1970 Boss 302 Eliminators with power steering**
1970 351 with power steering**
1971 - 1973 351 engines with power steering or with idler pulley without air conditioning*
Ford casting number D1AE-8509-BA.
Ford part number C9OZ-8509-D
Note:
* The Master Parts Catalog (MPC) states that 1971 - 1973 could have been stamped either C9OE-8509-G or D1AE-8509-BA; however, most 1971 - 1973 Cougars with power steering or with idler pulley but without air conditioning have Ford casting number D1AE-8509-BA.
** Ford casting number D1AE-8509-BA was used as a service replacement for 1970 Boss 302 with power steering or 1970 351 with power steering.