Regulator Rebuild Kit for 12-841,12-842, 12-881, and 12-887 By-Pass Regulators. Includes complete diaphragm, spring and rebuild instructions.

Features:
  • Fuel Pressure regulator rebuild kit for Holley 12-841,12-842, 12-881, and 12-887 fuel pressure regulators
  • Includes diaphragm and spring
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