These billet aluminum units facilitate quick oil warm up. Opening starts at 160*F (71.1C) and they are fully open at 180*F (82.2C). Comes with optional spacer for accommodate multiple engine block castings.
Billet Aluminum Sandwich Style Oil Thermostat 13/16–16 Center Post 10 AN Female O–Ring Seal
Most Chevy V8 with spin on filter. All V8 through 1989 and some through 1996. NOTE: 1990 and later may have metric threads. Will not accommodate metric center posts. Mount between the oil filter mounting boss and the oil filter itself.