I was skeptical about the O-rings at first, but after a few months they are still holding up. I recently returned the Felpro seals to the parts store which I kept in my glove box just in case.
π Stant 14369 OE-Type 195-Degree Coolant Thermostat: Reliable Seal & Stainless Steel Construction
7 Review
π‘οΈ Stant 45359 SuperStat Thermostat Fahrenheit: Precise Temperature Control for Maximum Performance
5 Review
Derale 13001 Plastic Rod Mounting
7 Review
Superstat Premium Thermostat - Stant-45209
6 Review