1988-1993 Dodge 5.9L Cummins 12 Valve Injector Hold Down Nut
1988-1993 Dodge 5.9L Cummins engines used a hold down nut to secure the injector to the cylinder head. These nuts apply pressure to a ring attached to the injector body. A dust shield O-ring is used above this nut to keep debris from accumulating between the injector body and the cylinder head.
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