Holley HP Billet 4.5 to 9 psi In-Line Fuel Pressure Regulator – 3/8 in NPT Inlet – 3/8 in NPT Outlet – 1/8 in NPT Port – Bypass / Black Anodized – Diesel / E85 / Gas 12-841

Holley HP Billet Fuel Pressure Regulator 12-841 4.5-9 PSI – 3/8″ NPT Ports – Carbureted Bypass Style – Black/Clear Anodized

CNC Machined

Black Bright Dip Anodized Body

Clear Bright Dip Anodized Ends

Corrosion Resistance And Good Looks

Feature A Gauge Port

Include Mounting Plate For Easy Installation

1/8″ NPT Gauge Port

Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every NASCAR Cup team and nearly every NHRA Pro-Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM’s popular LS engine are dominating the LS scene as well. Holley’s products also include performance fuel pumps, intake manifolds and engine dress-up products for street performance, race and marine applications. As a single solution or partnered with products from other Holley companies we can give you the edge you need over the competition!

Regulator is compatible with Diesel #1 and Diesel #2.

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 12-803BP regulator

Mounting bracket included

Product Description:

Fuel Pressure Regulator

HP Billet

4.5 to 9 psi

In-Line

3/8 in NPT Inlet

3/8 in NPT Outlet

1/8 in NPT Port

Bypass

Aluminum

Natural / Black Anodized

Diesel / E85 / Gas

Sold Individually

For over a century Holley has driven the cutting edge of fuel-system design. That work continues today through Holley’s market-leading EFI products as well as through Holley’s family of best-in-industry brands. Top brands like MSD, Flowmaster, Hurst, Accel, and many more make up the industry’s leading offering of enthusiast-driven products to deliver robust, complete performance solutions for builders, racers, and drivers. From propelling the LS-, Coyote-, and Gen 3 Hemi-swap trends, to continuously innovating late-model and vintage vehicle performance, Holley’s commitment to its customers and their cars is at the core of everything we do.