Fuel Pressure Regulator Diaphragm

Fits 1 bbl, 2 bbl, & 4 bbl Holley TBI,s

PART# 512-1

Suggested Retail: $48.98
Your Price: $44.08
In Stock Free Shipping on orders over $100*


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.


  • Replacement fuel pressure regulator diaphragm
  • Fits 1bbl, 2bbl, and 4bbl Pro-Jection Throttle bodies


Component TypeRegulator Rebuild Kit
Product TypeFuel Pressure Regulator Rebuild Kit
WarningCalifornia Proposition 65

Tech Resources

WARNING FOR 512-1: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
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    *Free Shipping & Handling only offered to the continental US on orders over $100.

    Some parts are not legal for use in California or other states with similar regulations.