Fitment: ’65-’89 911/930/914-6, see notes for fitment
Proper warm up and bypass protection
Proper warm up and bypass protection
We carry the ’74-’89 style factory 911 & 914 thermostat. Superior to aftermarket units, this thermostat includes a pressure bypass valve. In the event the oil cooler loop gets blocked and cannot pass oil, the bypass valve opens allowing oil flow and protecting your engine from oil starvation.

This part also goes by the following cross reference.
Cross Reference Part Number: