I'm somewhat new into 7.3's and I'm looking to change the injector o rings, I've heard Motorcraft is the only way to go yet I called the local dealership and was told I can only get o rings if I buy brand new injectors, is there anywhere else I could look for Motorcraft o rings? And is there anything I should watch for when replacing these? Thank you for any suggestions.

 

Welcome to the site..

The OE O-rings we're supplied to Navistar/Ford by Parker Hannifan.
There are OE kits available. MotorCraft # CM-5010, Ford # XC3Z-9229-AB.
Just make sure they're packaged in OE packaging if you want to be sure of pedigree