I am in the process of putting a new head gasket on my truck, again I pulled the injector's so the head could be surfaced. I want to know if I can just re-use the copper washer's that are on the injector's or if I need to buy new washer's? And what do the little gasket's that sit in the injector retainer nut's do? do I need to replace them too?

 

you can reuse them but its better to get new ones, and the gaskets are to keep stuff out of the injector bore like water.

 

where do you get the washers?

 

a pump shop or places like PDR maybe even an auto parts store

 

I have a buddy that can get me cummins part's at cost so I'll guess I'll just replace them.