Regulator Rebuild Kit for 12-879 and 12-880 Billet Regulator.

Holley's regulator rebuild kits include everything needed to rebuild your billet fuel pressure regulator back to new.

Includes diaphragm assembly, pressure spring and rebuild instructions.

Features:
  • Fuel Pressure regulator rebuild kit for Holley 12-879 and 12-880 regulator
  • Includes diaphragm and spring
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