Our fuel injector bungs are machined from 6061-T6 aircraft quality aluminum. These injector bungs are useful in building GM intakes. They have a o-ring bore of .585" for the GM LS style injectors. Fits LS3, LS7, LS9 and L76 injectors or other injectors with 15mm / .590"OD o-rings. At 2" in length, these are perfect for cutting down to size for differing applications. Please set your quantity to how many you would like to purchase.