JB4 Replacement Enclosure, Case, or Cover Style:Scratched and Blemished Billet JB4 Enclosure Simply remove the 1/8" NPT

Simply remove the 1/8" NPT fitting and add one of our optional port injection lines

This option is for those customers that will be using a boost referenced switch to trigger the secondary on their Stage 3 pump

and reattach it to the vehicle with the supplied extended bolts

*Stage 2 bucketless pumps can be purchased with the standard Walbro 450 pump or the optional 525 pump that flows approximately 10% more fuel

JB4 Replacement Enclosure, Case, or Cover Style:Scratched and Blemished Billet JB4 Enclosure Simply remove the 1/8" NPTProtect your JB4 or BMS Stage 1 tuner with the right enclosure for your application. Choose from our premium CNC machined billet aluminum enclosure for maximum durability, our weatherproof plastic enclosure for F and G chassis applications, or the high temperature plastic enclosure designed specifically for E chassis BMW models, all engineered to keep your tuner protected from heat, moisture, dirt, and everyday abuse. JB4 Billet Enclosure: Rugged,