im planning to pull the head off my truck this winter and im going to put in new valve seats and seals while its off. is there any aftermarket seats/seals out there or are stock ones from cummins the way to go. anybody make any aftermarket ones for our trucks. thanks

 

The stock seals are great. New valve seat inserts are available from Cummins and the aftermarket. Tim Barber has the low down on seats and what is out there.

 

hes got my truck right now. im picking it up this weekend so ill get the low down form him. thanks