The crush washers / heat shields are not specific to the injector. Peach Parts has them.

Did you rebuild the injectors?

Make sure you balance the injectors and test them or you could be installing a bad injector tip or the engine will not be as smooth as it should be. One of my Monark tips was bad from the factory.

The performance is noticeably better with rebuilt injectors.

Maybe I should put my injector balancing rig on the rental list.

__________________
1991 350SD (updated rods)
Biodiesel B100 when I can find it.
Dino when really cold outside