The BD Diesel AFC spring kit for 1994–1998 Dodge 12-valve P7100 Bosch pumps is a collection of springs, break-off screws, button-head Allen screws, and 3 and 4 mm Allen wrenches intended to modify AFC link behavior. BD states the kit restores full AFC link travel and allows smoke control via spring tension adjustments; installation requires a qualified pump technician and is not recommended as a home install.
BD Diesel AFC Spring Kit - 1994-1998 Dodge 12-valve/P7100 Bosch Pump