Fuel Injection Kit

12-846KIT Fuel Injection Pressure Regulator. Billet By-Pass Fuel Regulator Kit. Holley® has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR® Sprint® Cup team and nearly every NHRA® Pro-Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for GM’s LS engine. Holley’s products