Holley
BILLET FP REG, ADJ 4.5-9 PSI 3/8 NPT BY-
SKU: H00E 12-841
Description
Part #: 12-841
Holley (R) Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley (R). They are precision machined from 6061-T6 billet aluminum for strength and durability. They feature a black bright dip anodized body and a clear bright dip anodized top for corrosion resistance and good looks. The Holley 12-841 fuel pressure regulator features 3/8" NPT in/out ports and a 3/8 NPT return port.
Features:
- Adjustable from 4.5-9 psi for precise fuel pressure adjustments
- Constructed of billet aluminum with a black anodized base and clear anodize top for good looks
- Used in systems with a return line back to tank
- Use with electric pumps only
- One 3/8" NPT inlet, one 3/8" NPT outlet and one 3/8" NPT return (or bypass)
- 1/8" NPT gauge port
- Comparable and interchangeable with popular Holley (R) 12-803BP regulator
- Mounting bracket included
Street/Strip Carbureted Applications Two Port Adjustable from 4.5 to 9 PSI
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 12-841 |
| Weight | 0.72 lb |
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