Used Fan Clutch Code AZ 16R. This is used and will need to be rebuilt. Possibly late 70's GM. Similar shown for 1990's Trucks. Fan mounting 3 1/4", pump mounting 2 1/8" on center.
2009 Ford E350SD Used Fan Clutch 5.4L with AC, 118K Miles, Genuine OEM
2006 Ford F250SD Used Fan Clutch 6.0L Diesel OEM 116K Miles 326-00749B
Engine Cooling Fan Clutch-Eng Code: 1GR-FE Aisin FCT-072
Engine Cooling Fan Clutch-Eng Code: 1UZFE Aisin fits 1990 Lexus LS400 4.0L-V8
Engine Cooling Fan Clutch-Eng Code: B230F Aisin FCV-002
1968-1978 Chevy Corvette Camaro 7.25” Fan Clutch SO 4974367 dte code 2 04 73