Heavy duty thermostats that can handle increased heat management duties in high performance engines. Each part number comes with replacement gasket. "Big" thermostat, P4876307, is 180*F, "Small" thermostat, P4876308, opens at 195*F. Fits Slant 6, 3.9L V6, "A" engine, "B/RB" and Hemi. $7.95 | Heavy duty thermostats that can handle increased heat management duties in high performance engines. Each part number comes with replacement gasket. "Big" thermostat, P4876307, is 180*F, "Small" thermostat, P4876308, opens at 195*F. Fits Slant 6, 3.9L V6, "A" engine, "B/RB" and Hemi. $7.95 |
These high performance thermostats are designed to resist large variations in coolant pressure that occur at high RPM's where coolant temperature and coolant pressure fight for control of the thermostat keeping it from opening at it's designated temperature. The balanced HP Thermostat features all brass and copper construction, and opens at right temperature regardless of engine RPM. $11.95 | These high performance thermostats are designed to resist large variations in coolant pressure that occur at high RPM's where coolant temperature and coolant pressure fight for control of the thermostat keeping it from opening at it's designated temperature. The balanced HP Thermostat features all brass and copper construction, and opens at right temperature regardless of engine RPM. $11.95 |