1/4" x 1/8" pipe air bleed. This air bleed is used on the fuel injector and is very helpful when at the starting line or in the pits if you need to speed up your idle simply pull this plug out of it's holder and your idle speed will raise up about 100 to 150 rpm. This can be critical to help your driver maintain consistency at the starting line.
Fitting is made from a stainless steel and has a internal hex for tight areas as well as wrench flats for easy installation. Each fitting and plug are sold individual.