Exterior Components› Body Panels and Components
Holley
BILLET BYPASS REG, 4-65 PSI (3/8 NPT)
SKU: H00E 12-879
Moderate — 2–4 hours
Description
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Holley |
| Part Number | H00E 12-879 |
| Weight | 1.2 lb |
Videos
Adjusting Holley Fuel Pressure Regulator - model 12-803 - Blue Fuel Pump 110GPH
Holley Die Cast Bypass Fuel Pressure Regulators
Holley Fuel Regulator Install - 69 Camaro - Carb
INSTALLING HOLLEY FUEL PUMP, FUEL REGULATOR & FUEL PRESSURE GUAGE ON 1963 AUSTIN HEALEY SPRITE
Holley’s Die Cast Return Style Fuel Pressure Regulators
Fixing Holley Sniper EFI Fuel Pressure Problems with an External Adjustable Fuel Pressure Regulator
Holley carburetor return fuel system 101 & ( Mod Gone Wrong!)
How To Choose A Regulator for Carbureted Vehicles
Holley Billet Aluminum Throttle Return & Regulator Brackets
Holley 804 fuel pressure regulator install
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return Policy