Used power steering oil cooler for many 1971-73 Ford, Lincoln and Mercury cars with air conditioning. Specifically these came from 1971-73 Mercury Cougar or Ford Mustangs with factory installed air conditioning and power steering. This unit mounts to the top of the A/C compressor. This installs inline with the low pressure return hose.
Manufactured by the Blissfield Company and has a Ford stamped number of D1AA-3D746-AB. The Ford engineering number is D1AZ-3D746-D.