Monthly Archives: May 2023


Holley Part No. 12-886KIT Fuel Injection Pressure Regulator

12-886KIT Fuel Injection Pressure Regulator. Die Cast By-Pass Fuel Pressure Regulator Kit. Has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR? 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

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