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Description
HOLLEY 12-848 DOMINATOR BILLET EFI BY PASS FUEL PRESSURE REGULATOR Hot Street/ROverview: 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. They feature a black bright dip anodized body and a clear bright dip anodized top for corrosion resistance and good looks. The Holley 12 848 fuel pressure regulator features(1) 10 AN O ring inlet, (1) 10 AN O ring outlet, (1) 8 AN O ring return. Features:
Overview:
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. They feature a black bright dip anodized body and a clear bright dip anodized top for corrosion resistance and good looks. The Holley 12-848 fuel pressure regulator features(1) -10 AN O-ring inlet, (1) -10 AN O-ring outlet, (1) -8 AN O-ring return.
Features:
- Adjustable from 15-65 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
- (1) -10 an o-ring inlet, (1) -10 an o-ring outlet, (1) -8 an o-ring return
- 1/8" NPT gauge port
- Designed for use with the Holley® Dominator™ in-line fuel pumps or other high pressure pumps where return line is needed
- Mounting bracket included
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| Universal |
Specs:
| Brand | Holley |
|---|---|
| Color | Black Anodized |
| Emission Code | 5 |
| Fuel System | EFI |
| Fuel Type | Diesel |
| Fuel Type | Gasoline |
| Material | Aluminum |
| Pressure Range | 15-65 PSI |
| Product Type | Fuel Pressure Regulator |
| Return Size | 8 AN O-Ring |
| Style | Bypass |
| Warning | California Proposition 65 |
| Warranty | Limited 90 Day |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 5
Quiets the inside of the van complet ly and easy to work with
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
Great for insulating our van
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
★★★★★ 4
Easy to apply
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
Nice product. With adhesive applied, this an all in one product. Easily cut to random shapes and dimensions and the adhesive seems to hold well. Removing the paper that protects the adhesive to apply in tight areas, presents a new set of problems.
Having applied the product inside the panels of an old Trooper, it is yet to be determine if sound and temperature transfer are reduced.
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Reviewed in the United States on February 14, 2026
★★★★★ 5
This is very easy to install works very well
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
Very well made installs very easily and insulates my truck well
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2026
★★★★★ 5
Just Right! Made in the Ukraine!
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt, Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
Great product! I doubled this up with Siless Sound Dampening material as well. I did a double layer of this insulation on the ceiling (same as in your home, more insulation up top) and single throughout the rest of the car, in my effort to turn my CUV into an interior camper for winter snow storm chasing! Looks great, easy to install, and I got to support the Ukraine! (I was leaning towards Kilmat products but they are made in the Russian Federation... with everything going on right now, it was a no brainer)
Only downsides is (1) that you need to be really careful while handling it, because the stickiness WILL stick, (to your fingers) and if you handle it too much, you will pull some of that off. As long as you are careful there, you will be ok. (I personally cut the pieces to size/ smaller the better for tight spaces/ putting up behind other lines/hoses in the car... and then for the 2nd layer, I made sure I overlapped the seams so that there was no gap where the heat would escape through).
Second Downside (2) is that I need a little bit more, but not a whole roll more worth... 50 sq ft would be better for what I needed it for, but whatever - I am being nitpicky at this point.
Overall, Great Product/Looks Great/ I HIGHLY Recommend!
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Reviewed in the United States on May 3, 2022
★★★★★ 5
Works
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
We used it on the inside of a jeep hard top. So far no complaints. The glue sticks. We were worried about the 110° temps and so far so good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
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