-12AN Cummins Block Drain
Alot of you Diesel folks are running -6 feeds and -10 drains in your s400s! We'll here is the proper solution. A -12an block drain to accompany our bolt on -12an drain. Get the oil in and out as fast as possible so your turbocharger can live a long happy life of burn outs, and sled pulls!
this fitting i have tried in multiple blocks, its currently seeing 4000 rpm on a regular with no leaks easy and super clean install