











O-Ring between thermostat housing and cylinder head
$2.69
Give Us A Call or Chat! O-Rings have multiple purposes and are very important to your vehicle’s health and functionality. Whether you need a replacement for your Thermostat Housing, Plastic Bypass Pipe or Cooling Sensors, JC PRONTEZZA has the part for you. Stop leaks before they happen, replace your worn O-Rings at the first sign of wear, or while you’re working on your cooling system.
917.931
| Weight | .01 lbs |
|---|---|
| Dimensions | 2 × 2 × .25 in |
| Mfg Part # | 021121119A |

For the hose connection found on the back of the block


Hose connection found on the back of the block


Ensure a proper seal when installing your new thermostat. 50×4


Seals the connection between the oil cooler and the filter adapter. 59×5


Maximizes flow for stock turbochargers or future upgraded turbochargers thanks to a removable adapter