Order Status & Returns
Gift Cards
Help Center
1-800-345-4545
Vehicle Info NeededHOLLEYPART NUMBER: 510-12-879KIT
Adjustable Billet By-Pass Regulator 3/8 NPT Kit
$26595
Ships on 09/08/2026
Lowest Price GuaranteeAdjustable Billet By-Pass Regulator 3/8 NPT KitColor: Black Fuel System: EFI/Carb Fuel Type: Gasoline Inlet Port Diameter: 3/8 in. Inlet Size: 3/8 in. NPT Material: Aluminum
The Adjustable Billet By-Pass Regulator 3/8 NPT Kit from Holley is a fuel pressure regulator engineered and manufactured to Holley's specifications for consistent fit and function.
Holley 12-879KIT Features:
- Adjustable from 4-65 psi for precise fuel pressure adjustments.
- Boost Reference - 1:1.
- Mounting Bracket Included.
- The 4-15 psi carbureted spring comes installed in the regulator.
- Constructed of billet aluminum with a black anodized base and a clear anodized top for good looks.
- Used in systems with a return line back to the tank.
Precision-Built Fuel Pressure Regulators For EFI and Carburetors
Holley Billet Fuel Pressure Regulators are available in a variety of configurations and engineered to provide smooth and stable fuel pressure delivery under any conditions from idle to full throttle. Each precision-machined, 6061-T6 billet aluminum regulator features an anodized body and top for corrosion resistance and durable performance.
Part TypeFuel Pressure Regulator
Product LineHolley Billet Fuel Pressure Regulators
BrandHOLLEY
Package Height5.65
Package Width6.55
Package Length7.0
Weight2.21 PG
Part CategoryPerformance Parts
Part FitmentUniversal
Vendor Part Number12-879KIT
Package Qty1
Package TypeEA
No Questions
No Reviews
Some parts are not legal for use in California or other states with similar laws / regulations
