

Hero image 0 of Holley Performance 12-840 Fuel Pressure Regulator, 0 of 7
Holley Performance 12-840 Fuel Pressure Regulator
Check if this fits your vehicle
Key item features
- Adjustable Pressure: Precisely adjustable fuel pressure ranging from 4.5 to 9 PSI for various carbureted applications.
- Durable Construction: Crafted from 6061-T6 billet aluminum with a black anodized base and clear anodized top for enhanced durability and corrosion resistance.
- Port Configuration: Features one 3/8" NPT inlet, two 3/8" NPT outlets, and an additional 1/8" NPT gauge port.
- Versatile Compatibility: Suitable for use with both electric and mechanical fuel pumps in systems not requiring a return line.
- Included Hardware: Comes with a mounting bracket for convenient installation.
- Comparable Design: Interchangeable with the popular Holley 12-803 regulator, offering a similar design and functionality.
Generated by AI
Specs
- Vehicle model12-840
- Vehicle makeHolley
- Vehicle fitment typeSpecific
- Automotive parts divisionPerformance
- BrandHolley
- Automotive specialty part typeFuel Pressure Regulator
Current price is USD$152.95
Price when purchased online
- Free shipping
Free 90-day returns
How do you want your item?
Try 30 days of Free Shipping with Walmart+! Choose plan at checkout.
Columbus, 43215
Arrives by Wed, Feb 4
Sold and shipped by Walmart.com
Free 90-day returns
This item is gift eligible
Other sellers
$161.49
Shipping, arrives by Tue, Feb 3 to Columbus, 43215
Sold and shipped by Advance Cycle Parts
Free 30-day returns
Similar items you might like
Based on what customers bought
Holley Performance 12-882 Fuel Injection Pressure Regulator $99.95
$9995current price $99.95Holley Performance 12-882 Fuel Injection Pressure Regulator
35 out of 5 Stars. 3 reviewsShipping, arrives in 3+ daysHolley Performance 12-841 Fuel Pressure Regulator $161.95
$16195current price $161.95Holley Performance 12-841 Fuel Pressure Regulator
64.5 out of 5 Stars. 6 reviewsSave withShipping, arrives in 3+ daysHolley Performance 12-804 Fuel Pressure Regulator $63.47
$6347current price $63.47Holley Performance 12-804 Fuel Pressure Regulator
134.5 out of 5 Stars. 13 reviewsShipping, arrives in 3+ daysHolley Performance 12-881 Fuel Pressure Regulator $72.40
$7240current price $72.40Holley Performance 12-881 Fuel Pressure Regulator
32 out of 5 Stars. 3 reviewsSave withShipping, arrives tomorrowHolley Performance 12-887 Fuel Pressure Regulator $72.40 Was $81.95
Now$7240current price Now $72.40, Was $81.95$81.95Holley Performance 12-887 Fuel Pressure Regulator
93.7 out of 5 Stars. 9 reviewsSave withShipping, arrives tomorrowHolley Performance 12-846 Fuel Injection Pressure Regulator $264.41
$26441current price $264.41Holley Performance 12-846 Fuel Injection Pressure Regulator
15 out of 5 Stars. 1 reviewsShipping, arrives in 3+ daysEdelbrock Fuel Adjustable Pressure Regulator, -10 In/Out, -6 Return, 180 GPH, 5-10 PSI, 1.05 lb $158.95
$15895current price $158.95Edelbrock Fuel Adjustable Pressure Regulator, -10 In/Out, -6 Return, 180 GPH, 5-10 PSI, 1.05 lb
Shipping, arrives in 3+ daysEarl's Performance 12850ERL Fuel Pressure Regulator $51.19
$5119current price $51.19+$11.95 shippingEarl's Performance 12850ERL Fuel Pressure Regulator
Shipping, arrives in 3+ daysEdelbrock Adjustable Bypass Fuel Pressure Regulator Automotive Specialty Parts, Anodized Blue $157.95
$15795current price $157.95Edelbrock Adjustable Bypass Fuel Pressure Regulator Automotive Specialty Parts, Anodized Blue
Shipping, arrives in 3+ daysQuick Fuel Technology 30-1803QFT Fuel Pressure Regulator $169.95
$16995current price $169.95Quick Fuel Technology 30-1803QFT Fuel Pressure Regulator
Shipping, arrives in 3+ daysEdelbrock Single Reg Flange Plate $52.95
$5295current price $52.95Edelbrock Single Reg Flange Plate
Save withShipping, arrives tomorrowHolley Performance 12-426 Electric Fuel Pump $76.99
$7699current price $76.99Holley Performance 12-426 Electric Fuel Pump
44.8 out of 5 Stars. 4 reviewsShipping, arrives in 3+ daysHolley Performance 12-880 Fuel Injection Pressure Regulator $204.95
$20495current price $204.95Holley Performance 12-880 Fuel Injection Pressure Regulator
23 out of 5 Stars. 2 reviewsShipping, arrives in 3+ daysEdelbrock 8190 Fuel Pressure Regulator $149.95
$14995current price $149.95Edelbrock 8190 Fuel Pressure Regulator
14 out of 5 Stars. 1 reviewsSave withShipping, arrives tomorrowQuick Fuel Technology 30-1900QFT Fuel Pressure Regulator $210.95
$21095current price $210.95Quick Fuel Technology 30-1900QFT Fuel Pressure Regulator
Shipping, arrives in 3+ days5 - 12 PSI Aluminum Fuel Pressure Regulator - Red $49.94 Was $65.46
Now$4994current price Now $49.94, Was $65.46$65.465 - 12 PSI Aluminum Fuel Pressure Regulator - Red
Shipping, arrives in 3+ daysFuel Pressure Regulator Bypass Style 160GPH Blue $153.95
$15395current price $153.95Fuel Pressure Regulator Bypass Style 160GPH Blue
Shipping, arrives in 3+ daysEdelbrock Fuel Pressure Regulator Carbureted 180 GPH 5-10 PSI -10 In/Out -6 Return Black $153.95
$15395current price $153.95Edelbrock Fuel Pressure Regulator Carbureted 180 GPH 5-10 PSI -10 In/Out -6 Return Black
23 out of 5 Stars. 2 reviewsShipping, arrives in 3+ daysSpeedway Motors Fuel Pressure Regulator Automotive Specialty Parts $43.96 $43.96/count
$4396current price $43.96$43.96/count+$13.99 shippingSpeedway Motors Fuel Pressure Regulator Automotive Specialty Parts
65 out of 5 Stars. 6 reviewsShipping, arrives in 3+ daysFuel Pressure Regulator Bypass Style 160GPH Red $150.95
$15095current price $150.95Fuel Pressure Regulator Bypass Style 160GPH Red
Save withShipping, arrives tomorrow
About this item
Product details
Street/Strip Carbureted Applications
Two Port
Adjustable from 4.5 to 9 PSI;
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 12-840 fuel pressure regulator features 3/8 in. NPT in/out ports.;
Two Port
Adjustable from 4.5 to 9 PSI;
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 12-840 fuel pressure regulator features 3/8 in. NPT in/out ports.;
- 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 where a return line is not needed
- Use with electric or mechanical pumps
- One 3/8" NPT inlet and two 3/8" NPT outlets
- 1/8" NPT gauge port
- Comparable and interchangeable with popular Holley® 12-803 regulator
- Mounting bracket included
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.
Specifications
Vehicle model
12-840
Vehicle make
Holley
Vehicle fitment type
Specific
Automotive parts division
Performance
Warranty
Warranty information
Manufacturers Limited 90 Day Warranty
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Warranty url
Warnings
Warning Text
California Proposition 65
Compare with similar items
| Product | Viewing this itemHolley Performance 12-840 Fuel Pressure Regulator ![]() $152.95 current price $152.9523.5 out of 5 Stars. 2 reviews | Holley Performance 12-882 Fuel Injection Pressure Regulator ![]() $99.95 current price $99.9535 out of 5 Stars. 3 reviews | Holley Performance 12-841 Fuel Pressure Regulator ![]() $161.95 current price $161.9564.5 out of 5 Stars. 6 reviews | Holley Performance 12-881 Fuel Pressure Regulator ![]() $72.40 current price $72.4032 out of 5 Stars. 3 reviews | Holley Performance 12-887 Fuel Pressure Regulator ![]() Now $72.40 current price Now $72.40, Was $81.95$81.95 93.7 out of 5 Stars. 9 reviews | Holley Performance 12-846 Fuel Injection Pressure Regulator ![]() $264.41 current price $264.4115 out of 5 Stars. 1 reviews | Edelbrock Fuel Adjustable Pressure Regulator, -10 In/Out, -6 Return, 180 GPH, 5-10 PSI, 1.05 lb ![]() $158.95 current price $158.95 | Earl's Performance 12850ERL Fuel Pressure Regulator ![]() $51.19 current price $51.19 | Edelbrock Adjustable Bypass Fuel Pressure Regulator Automotive Specialty Parts, Anodized Blue ![]() $157.95 current price $157.95 | Quick Fuel Technology 30-1803QFT Fuel Pressure Regulator ![]() $169.95 current price $169.95 |
|---|
| Vehicle model | 12-840Holley Performance 12-840 Fuel Pressure Regulator | Hol 12-882Holley Performance 12-882 Fuel Injection Pressure Regulator | -Holley Performance 12-841 Fuel Pressure Regulator | 12-881Holley Performance 12-881 Fuel Pressure Regulator | 12-887Holley Performance 12-887 Fuel Pressure Regulator | 12-846Holley Performance 12-846 Fuel Injection Pressure Regulator | 174051Edelbrock Fuel Adjustable Pressure Regulator, -10 In/Out, -6 Return, 180 GPH, 5-10 PSI, 1.05 lb | 12850ERLEarl's Performance 12850ERL Fuel Pressure Regulator | 174052Edelbrock Adjustable Bypass Fuel Pressure Regulator Automotive Specialty Parts, Anodized Blue | 30-1803QFTQuick Fuel Technology 30-1803QFT Fuel Pressure Regulator |
|---|---|---|---|---|---|---|---|---|---|---|
| Vehicle make | HolleyHolley Performance 12-840 Fuel Pressure Regulator | -Holley Performance 12-882 Fuel Injection Pressure Regulator | HolleyHolley Performance 12-841 Fuel Pressure Regulator | HolleyHolley Performance 12-881 Fuel Pressure Regulator | HolleyHolley Performance 12-887 Fuel Pressure Regulator | -Holley Performance 12-846 Fuel Injection Pressure Regulator | EssexEdelbrock Fuel Adjustable Pressure Regulator, -10 In/Out, -6 Return, 180 GPH, 5-10 PSI, 1.05 lb | -Earl's Performance 12850ERL Fuel Pressure Regulator | EssexEdelbrock Adjustable Bypass Fuel Pressure Regulator Automotive Specialty Parts, Anodized Blue | -Quick Fuel Technology 30-1803QFT Fuel Pressure Regulator |
| Vehicle fitment type | SpecificHolley Performance 12-840 Fuel Pressure Regulator | SpecificHolley Performance 12-882 Fuel Injection Pressure Regulator | SpecificHolley Performance 12-841 Fuel Pressure Regulator | SpecificHolley Performance 12-881 Fuel Pressure Regulator | SpecificHolley Performance 12-887 Fuel Pressure Regulator | SpecificHolley Performance 12-846 Fuel Injection Pressure Regulator | SpecificEdelbrock Fuel Adjustable Pressure Regulator, -10 In/Out, -6 Return, 180 GPH, 5-10 PSI, 1.05 lb | SpecificEarl's Performance 12850ERL Fuel Pressure Regulator | SpecificEdelbrock Adjustable Bypass Fuel Pressure Regulator Automotive Specialty Parts, Anodized Blue | SpecificQuick Fuel Technology 30-1803QFT Fuel Pressure Regulator |
| Automotive parts division | PerformanceHolley Performance 12-840 Fuel Pressure Regulator | PerformanceHolley Performance 12-882 Fuel Injection Pressure Regulator | PerformanceHolley Performance 12-841 Fuel Pressure Regulator | PerformanceHolley Performance 12-881 Fuel Pressure Regulator | PerformanceHolley Performance 12-887 Fuel Pressure Regulator | PerformanceHolley Performance 12-846 Fuel Injection Pressure Regulator | PerformanceEdelbrock Fuel Adjustable Pressure Regulator, -10 In/Out, -6 Return, 180 GPH, 5-10 PSI, 1.05 lb | PerformanceEarl's Performance 12850ERL Fuel Pressure Regulator | PerformanceEdelbrock Adjustable Bypass Fuel Pressure Regulator Automotive Specialty Parts, Anodized Blue | PerformanceQuick Fuel Technology 30-1803QFT Fuel Pressure Regulator |
Now hiding additional rows in the Table
Popular items in this category
Best selling items that customers love
Holley Performance 12-707 Fuel Pressure Regulator $383.95
$38395current price $383.95Holley Performance 12-707 Fuel Pressure Regulator
Save withShipping, arrives in 3+ daysHolley Performance 12-845 Fuel Pressure Regulator $270.20
$27020current price $270.20Holley Performance 12-845 Fuel Pressure Regulator
15 out of 5 Stars. 1 reviewsShipping, arrives in 3+ daysHolley Performance 12-818 Fuel Pressure Regulator $54.59
$5459current price $54.59+$11.99 shippingHolley Performance 12-818 Fuel Pressure Regulator
Shipping, arrives in 3+ daysHolley Performance 80000103 Fuel Pressure Regulator $40.95
$4095current price $40.95Holley Performance 80000103 Fuel Pressure Regulator
Save withShipping, arrives in 3+ daysHolley Performance 12-842 Fuel Pressure Regulator $193.95
$19395current price $193.95Holley Performance 12-842 Fuel Pressure Regulator
15 out of 5 Stars. 1 reviewsShipping, arrives in 3+ daysHolley Performance 12-704 Fuel Pressure Regulator $176.18
$17618current price $176.18+$13.99 shippingHolley Performance 12-704 Fuel Pressure Regulator
24 out of 5 Stars. 2 reviewsShipping, arrives in 3+ daysHolley Performance 12-843 Fuel Pressure Regulator $224.95
$22495current price $224.95Holley Performance 12-843 Fuel Pressure Regulator
Shipping, arrives in 3+ daysHolley Performance 512-504-5 Fuel Pressure Regulator $430.95
$43095current price $430.95Holley Performance 512-504-5 Fuel Pressure Regulator
Shipping, arrives in 3+ daysHolley Performance 12-847 Fuel Pressure Regulator $292.95
$29295current price $292.95Holley Performance 12-847 Fuel Pressure Regulator
Save withShipping, arrives tomorrowHolley Performance 12-826 Fuel Pressure Regulator $79.58
$7958current price $79.58Holley Performance 12-826 Fuel Pressure Regulator
Shipping, arrives in 3+ daysHolley Performance 12-803BP Fuel Pressure Regulator $159.95
$15995current price $159.95Holley Performance 12-803BP Fuel Pressure Regulator
64.2 out of 5 Stars. 6 reviewsShipping, arrives in 3+ daysHolley Performance 12-848 Fuel Injection Pressure Regulator $278.95
$27895current price $278.95Holley Performance 12-848 Fuel Injection Pressure Regulator
15 out of 5 Stars. 1 reviewsShipping, arrives in 3+ daysHolley Performance 512-501 Fuel Injection Pressure Regulator $233.80
$23380current price $233.80Holley Performance 512-501 Fuel Injection Pressure Regulator
23 out of 5 Stars. 2 reviewsHolley Performance 12-876 Fuel Injection Pressure Regulator $239.83
$23983current price $239.83Holley Performance 12-876 Fuel Injection Pressure Regulator
Save withShipping, arrives tomorrowHolley Performance 12-875 Fuel Injection Pressure Regulator $237.95
$23795current price $237.95Holley Performance 12-875 Fuel Injection Pressure Regulator
24 out of 5 Stars. 2 reviewsSave withShipping, arrives tomorrowHolley EFI 12-865 Fuel Pressure Regulator $470.61
$47061current price $470.61Holley EFI 12-865 Fuel Pressure Regulator
Shipping, arrives in 3+ daysHolley EFI 512-1 Fuel Pressure Regulator $84.65
$8465current price $84.65Holley EFI 512-1 Fuel Pressure Regulator
Save withShipping, arrives in 3+ daysHolley Performance 12-879 Fuel Injection Pressure Regulator $204.95
$20495current price $204.95Holley Performance 12-879 Fuel Injection Pressure Regulator
23 out of 5 Stars. 2 reviewsShipping, arrives in 3+ days
Customer ratings & reviews
How item rating is calculated
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Sort by |
Showing 1-1 of 1 review
May 9, 2016
Big Willie
2 out of 5 stars review
Disappointed!!
Erratic pressure could get it to adjust properly and got stranded with the car??
Review from jegs.com
Helpful?751SJJVSCUQT119641996
Related pages
- Holley Fuel Pressure Regulator Bracket
- Holley Fuel Pressure Regulator Rebuild Kit
- Holley Fuel Pressure Regulator
- Fuel Pressure Regulator Service Kits
- Fuel Injection Regulators on Advance Auto Parts Shop
- Performance Fuel Regulators
- Honda Fit Fuel Pressure Regulator
- Honda S2000 Fuel Pressure Regulator
- Mercury Villager Egr Valve
- Fuel Shut-Off Valves
- Performance Fuel Cells & Fuel Tanks
- Fuel Injection Rail Crossover Tube and Seals










