Holley 12-879 Adjustable Billet By-Pass Regulator-3/8 NPT Adjustable Billet By-Pass Return Style Fuel Pressure Regulator 3/8 NPT
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Holley Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley. They are precision machined from 6061-T6 billet aluminum for strength and durability.
These regulators are adjustable from 4-65 psi and will handle both carbureted and EFI applications. A second pressure spring is included allowing you to increase the fuel pressure range up to 65 psi for EFI systems.
They are offered with two port sizes, 3/8 inch NPT or 6AN to adapt to your new or existing fuel lines. So, if you are currently running a carbureted system but plan to upgrade to EFI in the future, these regulators will have you covered either way.
Adjustable from 4-65 psi for precise fuel pressure adjustments 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 (1) 3/8 inch NPT Inlet
Features and Benefits:
- (1) 3/8 inch NPT Outlet
- and (1) 3/8 inch NPT Return Port Includes fitting for manifold reference Includes an 1/8 NPT gauge port Boost Reference - 1:1 The 4-15 psi carbureted spring comes installed in the regulator Compatible with diesel fuel and E85
Details:
- Adjustable: Yes
- Color: Black
- Fuel Type: Gasoline
- Fuel System: EFI/Carb
- Gauge Port: Yes
- Grade Type: Performance
- Inlet Port Diameter: 3/8 Inch
- Inlet Quantity: 1
- Inlet Size: 3/8 inch NPT
- Inlet Type: NPT
- Material: Aluminum
- Mounting Hardware Included: Yes
- Mounting Type: Inline
- Outlet Port Diameter: 3/8 Inch
- Outlet Quantity: 1
- Outlet Size: 3/8 inch NPT
- Outlet Type: NPT
- Port Quantity: 3.0
- Return Size: 3/8 inch NPT
- Style: Bypass
- Warranty: Manufacturer's Limited 90 Day Warranty
Installation Guide: Download PDF
Installation / Product Video: Watch on YouTube
β οΈ California Proposition 65 Warning
California Residents: This product can expose you to chemicals which are known to the State of California to cause cancer or other reproductive harm. Please visit www.p65warnings.ca.gov for more information.
Please check the product description for the manufacturer’s application details, or ask a specialist — we’ll confirm whether it fits your vehicle before you buy.
Shipping Information
Free shipping is available for eligible orders.
Shipping: For USA - Up to 50lbs.
Orders are processed during normal business days. Delivery dates may vary by carrier and destination.
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