Originally Posted by mixed89
Off the top of my head it is 3/8,stop by the parts house and have them give you a small length of hose and compare them.
I think it may be 5/16" look at the pic below calling out 5/16 for chrysler...3/8 is just 1/16 bigger...this one is $30
S.U.R. and R Auto Parts CKV5, Fuel Line Check Valve for 5/16in. Lines
Features and Benefits:
- Typical repair can be completed in less than 30 minutes
- No need to remove the gas tank for the check valve repair
- Avoid replacing costly fuel pumps
- Fits Ford, Chrysler and import models
- Easy installation
In tank electric fuel pumps have built-in check valves. When these fail, fuel that is supposed to be at the engine runs back into the gas tank, preventing the vehicle from starting. Installing the SRRCKV5 check valve eliminates the need to replace the entire in tank fuel pump. This eliminates an expensive gas tank removal and repair.