Holley EFI 512-1 - Fuel Pressure Regulator Diaphragm

Fits 1 bbl, 2 bbl, & 4 bbl Holley TBI,s Regulator Rebuild Kit for 1 bbl, 2 bbl, & 4 bbl Holley TBI regulators. Holley's regulator rebuild kits include everything needed to rebuild your billet fuel pressure regulator back to new. Includes diaphragm assembly, gaskets and rebuild instructions. Features: • Replacement fuel pressure regulator diaphragm • Fits 1bbl, 2bbl, and 4bbl Pro-Jection Throttle bodies