Regulator Rebuild Kit

Fits 12-840 and 12-842 Fuel Pressure Regulators

PART# 12-823

$25.62   Suggested Retail
$23.06   Your Price
Free Shipping on orders over $100*
In Stock  


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


  • Fuel Pressure regulator rebuild kit for Holley 12-841 and 12-842 fuel pressure regulators
  • Includes diaphragm and spring


Component TypeRegulator Rebuild Kit
Product TypeFuel Pump
WarningCalifornia Proposition 65

Tech Resources

WARNING FOR 12-823: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

*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.