Holley Carb/EFI Adjustable Billet Bypass Fuel Pressure Regulator Kit, 6AN, 4-65 PSI | 12-880KIT
Available to order. In-stock orders typically ship in 1 to 2 business days.
Email sales@berryperformancesales.com with your year, make, model and engine, and we'll help you check fitment before you order.
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Machined from 6061-T6 billet aluminum, this bypass-style fuel pressure regulator adjusts from 4-65 psi and handles both carbureted and EFI applications, with a second spring included to extend the range for EFI systems. This kit adds a fuel pressure gauge and adapter fittings to get the install started.
Specifications:
- Category: Air and Fuel Delivery
- Color: Black anodized base, clear anodized top
- Fuel System: EFI/Carb
- Fuel Type: Gasoline
- Gauge Port: Yes
- Inlet Size: 6 AN O-Ring
- Material: Aluminum
- Mounting Hardware Included: Yes
- Outlet Size: 6 AN O-Ring
- Return Size: 6 AN O-Ring
- Style: Bypass
- Sub Category: Carburetion
- Warning: California Proposition 65
- Warranty: Manufacturer's Limited 90 Day Warranty
- Part Number: 12-880KIT
Used in return-style fuel systems with a line back to the tank; includes 6AN O-ring inlet, outlet, and return ports, a fitting for manifold reference, and an 1/8 NPT gauge port. Boost reference is 1:1. Ships with the 4-15 psi carbureted spring installed.
FAQ
What's the adjustable pressure range?
4-65 psi, covering carbureted and EFI applications with the included second spring.
What port sizes does it use?
6AN O-ring inlet, outlet, and return.
What's included in the kit?
The regulator, a fuel pressure gauge, and adapter fittings.
Is this for return-style fuel systems?
Yes, systems with a return line back to the tank.
Shipping Policy
- Free shipping on orders over $99 (excludes freight shipments).
- In-stock orders typically ship within 1 to 2 business days. Weekend and holiday orders are processed the next business day.
- Orders ship from Defiance, Ohio and a nationwide network of warehouses and manufacturers.
- Items showing an ETA are not in stock yet. ETAs come from the manufacturer and can change.
- No P.O. Boxes. International orders need a shipping quote, so email us first.
Return Policy
- 30-day return window from the ship date. Returns must be approved first; email sales@berryperformancesales.com with your order number.
- Items must be unused, complete and in the original packaging.
- A 20% restocking fee applies, and return shipping is paid by the buyer.
- Not returnable: installed or modified parts, opened or used programmers and tuners, custom orders, Open Box, and Clearance or Final Sale items.
- Damaged, defective or incorrect items must be reported within 48 hours of delivery with photos.
Disclaimer
All products are sold for off-road use only unless otherwise specified. Buyer assumes all responsibility for installation and operation. Seller is not liable for any incidental, indirect, or consequential damages — including engine failure, labor costs, or vehicle downtime — resulting from the use of any product sold.
By making a purchase from Berry Performance Sales, you acknowledge and agree to abide by the terms and conditions of these Policies.
For any questions or concerns, please contact us — we’re always happy to help.
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