Style RES1. Used in conjunction with The 'Cooler Bleeder and the Series 2 Adapter. This inserts into the mini reservoirs found in many Chevrolet, Cadillac, and Saturn vehicles, while simultaneously blocking off the overflow line. Used in place of General Motors / Kent Moore special tool J46143. See Connection Chart for exact fitments
Note: This is a 3D printed product and as such there will be visible printing lines on the plug which does NOT affect its performance. It is then hand assembled in the USA, there may be cosmetic tooling marks on plug from assembly.