NC Bill Posted September 18, 2016 Report Share Posted September 18, 2016 I just bought the plugs for my annual - the NGK DCPR8E. But I notice that these are marked 4179 while previously I used 4339. What I've learned on the internet is: NGK 4179 DCPR8E Gap .036” (0.9mm) Terminal type SolidNGK 4339 DCPR8E Gap .028” (0.7mm) Terminal type Removable Nut Are the 4179 interchangeable with the 4339? Link to comment Share on other sites More sharing options...
This topic is now archived and is closed to further replies.