New Injector O-Ring Kit for CAT 3100, C7, and 3126 Engines

Restore proper fuel system sealing with this injector O-ring kit for Caterpillar 3100 series, C7, and 3126 engines. This kit includes all necessary O-rings to reseal one injector, preventing fuel leaks and maintaining correct injector performance. Made from durable, high-temperature materials for lasting reliability in diesel engine environments.

Part Number: 321333
Fits:
- CAT 3100 Series
- CAT C7
- CAT 3126
Includes: O-ring kit for 1 fuel injector
Condition: New, high-quality aftermarket replacement
Application: Fuel injector sealing to cylinder head
Features:
- Meets or exceeds OEM specifications
- Resists heat, fuel, and compression stress
- Quick and secure installation
- Helps prevent loss of fuel pressure and injector blow-by

Weight
Dimensions

We offer free standard ground shipping within the USA! If you need your parts in a hurry and would like to get them overnighted or expedited, please give us a call !

NOTE - CUT OFF TIME FOR SAME DAY SHIPPING IS 3PM CENTRAL TIME. ORDERS PLACED AFTER 3PM WILL SHIP OUT NEXT BUSINESS DAY. NEXTDAY SHIPMENTS THAT DO NOT ARRIVE ON TIME ARE NON-REFUNDABLE.
-FOR ORDERS INCLUDING HEAVY ITEMS(INFRAME KITS, HEADS,ETC.) WILL BE PLACED ON A SHORT HOLD WHILE WE VERIFY ADDRESS AND SHIPPING IS CORRECT.

We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

NOTE - All open orders will have a 20% restocking fee. All returns will have a shipping fee.

1 YEAR WARRANTY

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.