

Carburetor Fuel Pressure Regulator NEW Fit Holley 12-803 2 Port 4 1/2 to 9 PSI
Key item features
- Precise Regulation: Offers adjustable fuel regulation from 4-1/2 to 9 PSI, ensuring optimal performance for carburetor systems.
- Durable Construction: Manufactured from high-quality zinc alloy, providing a lightweight, anti-rust, colorfast, and durable component.
- Direct Replacement: Designed as a direct replacement part, perfectly matching original factory specifications for a seamless fit.
- Integrated Ports: Features 3/8" NPT ports with a configuration of one inlet and two outlets, along with a 7/32" restriction.
- Holley Compatibility: Specifically designed to fit Holley 2-port systems, identified by interchange part number 12-803.
- Performance Tested: Each unit undergoes rigorous testing to ensure accurate parameters and stable, reliable performance.
- Included Hardware: Comes complete with necessary mounting hardware for convenient installation.
Specs
- Vehicle fitment typeSpecific
- Brandmosikatech
- FeaturesAdjustable, Lightweight
- MaterialZinc Alloy
- FinishChrome
- ColorBlack
- Free shipping
Free 30-day returns
How do you want your item?
Similar items you might like
Based on what customers bought
Fits for Holley 12-803 2 Port 4 1/2 to 9 PSI Carburetor Fuel Pressure Regulator $29.59
$2959current price $29.59Fits for Holley 12-803 2 Port 4 1/2 to 9 PSI Carburetor Fuel Pressure Regulator
Shipping, arrives in 3+ daysFor Holley 12-803 2 Port 4 1/2 to 9 PSI New Carburetor Fuel Pressure Regulator $32.51
$3251current price $32.51For Holley 12-803 2 Port 4 1/2 to 9 PSI New Carburetor Fuel Pressure Regulator
Shipping, arrives in 3+ daysBest seller 12V Universal Electric Inline Fuel Pump Low Pressure (4-7 Psi) Gas Diesel, Hep-02A $15.59
Best seller
Sponsored$1559current price $15.5912V Universal Electric Inline Fuel Pump Low Pressure (4-7 Psi) Gas Diesel, Hep-02A
794.3 out of 5 Stars. 79 reviewsSave withShipping, arrives tomorrow12-804 1-4 PSI Carburetor Fuel Pressure Regulator for Holley 3/8" NPT NEW $28.93
$2893current price $28.9312-804 1-4 PSI Carburetor Fuel Pressure Regulator for Holley 3/8" NPT NEW
Shipping, arrives in 3+ daysCarburetor Fuel Pressure Regulator NEW For Holley 12-803 2 Port 4 1/2 to 9 PSI $30.42
$3042current price $30.42Carburetor Fuel Pressure Regulator NEW For Holley 12-803 2 Port 4 1/2 to 9 PSI
Shipping, arrives in 3+ days12-804 1-4 PSI Carburetor Fuel Pressure Regulator for Holley 3/8 in NPT $28.95
$2895current price $28.9512-804 1-4 PSI Carburetor Fuel Pressure Regulator for Holley 3/8 in NPT
Shipping, arrives in 3+ daysCarburetor Fuel Pressure Regulator NEW For Holley 12-803 1/2 to 9 PSI Chrome $29.30
$2930current price $29.30Carburetor Fuel Pressure Regulator NEW For Holley 12-803 1/2 to 9 PSI Chrome
Shipping, arrives in 3+ daysFor Holley Quick Fuel Carburetor Carb 12-804 Low Fuel Pressure Regulator $29.92
$2992current price $29.92For Holley Quick Fuel Carburetor Carb 12-804 Low Fuel Pressure Regulator
Shipping, arrives in 3+ daysFuel Pressure Regulator - Compatible with 2003 - 2004 Ford E-450 Super Duty 6.8L V10 $28.95
$2895current price $28.95Fuel Pressure Regulator - Compatible with 2003 - 2004 Ford E-450 Super Duty 6.8L V10
15 out of 5 Stars. 1 reviewsShipping, arrives in 3+ days12-804 Carburetor Fuel Pressure Regulator fit Holley 1-4 PSI 3/8 inch NPT 1 in.2 $29.33
$2933current price $29.3312-804 Carburetor Fuel Pressure Regulator fit Holley 1-4 PSI 3/8 inch NPT 1 in.2
Shipping, arrives in 3+ daysFuel Pressure Regulator - Compatible with 1996 Oldsmobile Cutlass Supreme 3.4L V6 $28.95
$2895current price $28.95Fuel Pressure Regulator - Compatible with 1996 Oldsmobile Cutlass Supreme 3.4L V6
15 out of 5 Stars. 1 reviewsShipping, arrives in 3+ daysFuel Pressure Regulator - Compatible with 1999 - 2008 Suzuki Grand Vitara 2000 2001 2002 2003 2004 2005 2006 2007 $26.95
$2695current price $26.95Fuel Pressure Regulator - Compatible with 1999 - 2008 Suzuki Grand Vitara 2000 2001 2002 2003 2004 2005 2006 2007
Shipping, arrives in 3+ daysFuel Pressure Regulator - Compatible with 2000 - 2002 Cadillac Eldorado 4.6L V8 2001 $28.95
$2895current price $28.95Fuel Pressure Regulator - Compatible with 2000 - 2002 Cadillac Eldorado 4.6L V8 2001
Shipping, arrives in 3+ daysFuel Pressure Regulator - Compatible with 1987 - 1993 Chevy LLV 2.5L 4-Cylinder 1988 1989 1990 1991 1992 $28.95
$2895current price $28.95Fuel Pressure Regulator - Compatible with 1987 - 1993 Chevy LLV 2.5L 4-Cylinder 1988 1989 1990 1991 1992
Shipping, arrives in 3+ daysFuel Pressure Regulator - Compatible with 1999 - 2004 Ford E-350 Super Duty 5.4L V8 2000 2001 2002 2003 $34.95
$3495current price $34.95Fuel Pressure Regulator - Compatible with 1999 - 2004 Ford E-350 Super Duty 5.4L V8 2000 2001 2002 2003
15 out of 5 Stars. 1 reviewsShipping, arrives in 3+ daysFuel Pressure Regulator - Compatible with 1987 - 1988 Chevy S10 Blazer 2.5L 4-Cylinder $28.95
$2895current price $28.95Fuel Pressure Regulator - Compatible with 1987 - 1988 Chevy S10 Blazer 2.5L 4-Cylinder
Shipping, arrives in 3+ daysCarburetor Fuel Pressure Regulator NEW For Holley 12-803 2 Port 4 1/2 to 9 PSI $27.87
$2787current price $27.87Carburetor Fuel Pressure Regulator NEW For Holley 12-803 2 Port 4 1/2 to 9 PSI
Shipping, arrives in 3+ daysFuel Pressure Regulator - Compatible with 1996 - 2005 Chevy Blazer 1997 1998 1999 2000 2001 2002 2003 2004 $27.95
$2795current price $27.95Fuel Pressure Regulator - Compatible with 1996 - 2005 Chevy Blazer 1997 1998 1999 2000 2001 2002 2003 2004
Shipping, arrives in 3+ days
About this item
Product details
Product Description:
Type: 4 1/2 to 9 Psi Carburetor Fuel Pressure Regulator
Interchange Part Number: 12-803
Other Part Number: for Holley 12-803
Manufacturer Part Number: 12-803
100% Brand New and High-quality Made
Fitment Type: Performance/Custom
Mounting Hardware Included: Yes
Color: As Shown in Pictures
Material:zinc Alloy
Fitment Type:direct Replacement
Fitment:
Fits for Holley 2 Port 4 1/2 to 9 Psi
Product Features:
According to the Original Factory Specifications,Perfect Match for the Original Car.
Own Different Test Machines to Design Exact Accurate Parameter for Our Products.all Switches Were Tested for
Performance.
Made by High Quality Material, Lightweight, Anti-rust, Colorfast and Durable.
Aftermarket Product with Premium Quality.
Stable Performance, High Reliability,Suitable for Replacing Your Broken One.
Adjustable Fuel Regulation from 4-1/2 to 9 Psi
220" (7/32") Restriction
3/8" Npt Ports ( 1 in, 2 out)
Chrome Finish
Package Included:
1x Carburetor Fuel Pressure Regulator
Note:
If you have any questions, please contact us first
Professional Installer is Highly Recommended (No Instruction Included)
- Carburetor Fuel Pressure Regulator NEW Fit Holley 12-803 2 Port 4 1/2 to 9 PSI
- Product Description: Type: 4 1/2 to 9 Psi Carburetor Fuel Pressure Regulator Interchange Part Number: 12-803 Other Part Number: for Holley 12-803 Manufacturer Part Number: 12-803 100% Brand New and High-quality Made Fitment Type: Performance/Custom Mounting Hardware Included: Yes Color: As Shown in Pictures Material:zinc Alloy Fitment Type:direct Replacement
- Fitment: Fits for Holley 2 Port 4 1/2 to 9 Psi Product Features: According to the Original Factory Specifications,Perfect Match for the Original Car. Own Different Test Machines to Design Exact Accurate Parameter for Our Products.all Switches Were Tested for Performance. Made by High Quality Material, Lightweight, Anti-rust, Colorfast and Durable. Aftermarket Product with Premium Quality. Stable Performance, High Reliability,Suitable for Replacing Your Broken One. Adjustable Fuel Regulation from 4-1/2 to 9 Psi 220"" (7/32"") Restriction 3/8"" Npt Ports ( 1 in, 2 out) Chrome Finish
- Package Included: 1x Carburetor Fuel Pressure Regulator Note: If you have any questions, please contact us first Professional Installer is Highly Recommended (No Instruction Included)
Specifications
Vehicle fitment type
Brand
Automotive specialty part type
Features
Warranty
Warranty information
Compare with similar items
| Product | Viewing this itemCarburetor Fuel Pressure Regulator NEW Fit Holley 12-803 2 Port 4 1/2 to 9 PSI ![]() $30.54 current price $30.54 | Fits for Holley 12-803 2 Port 4 1/2 to 9 PSI Carburetor Fuel Pressure Regulator ![]() $29.59 current price $29.59 | 12-804 1-4 PSI Carburetor Fuel Pressure Regulator for Holley 3/8 in NPT ![]() $28.95 current price $28.95 | 12-804 Carburetor Fuel Pressure Regulator fit Holley 1-4 PSI 3/8 inch NPT 1 in.2 ![]() $29.33 current price $29.33 | Fuel Pressure Regulator - Compatible with 1999 - 2008 Suzuki Grand Vitara 2000 2001 2002 2003 2004 2005 2006 2007 ![]() $26.95 current price $26.95 |
|---|
| Vehicle fitment type | SpecificCarburetor Fuel Pressure Regulator NEW Fit Holley 12-803 2 Port 4 1/2 to 9 PSI | SpecificFits for Holley 12-803 2 Port 4 1/2 to 9 PSI Carburetor Fuel Pressure Regulator | Specific12-804 1-4 PSI Carburetor Fuel Pressure Regulator for Holley 3/8 in NPT | Specific12-804 Carburetor Fuel Pressure Regulator fit Holley 1-4 PSI 3/8 inch NPT 1 in.2 | SpecificFuel Pressure Regulator - Compatible with 1999 - 2008 Suzuki Grand Vitara 2000 2001 2002 2003 2004 2005 2006 2007 |
|---|---|---|---|---|---|
| Features | AdjustableCarburetor Fuel Pressure Regulator NEW Fit Holley 12-803 2 Port 4 1/2 to 9 PSI | AdjustableFits for Holley 12-803 2 Port 4 1/2 to 9 PSI Carburetor Fuel Pressure Regulator | Rustproof12-804 1-4 PSI Carburetor Fuel Pressure Regulator for Holley 3/8 in NPT | Adjustable12-804 Carburetor Fuel Pressure Regulator fit Holley 1-4 PSI 3/8 inch NPT 1 in.2 | OE ReplacementFuel Pressure Regulator - Compatible with 1999 - 2008 Suzuki Grand Vitara 2000 2001 2002 2003 2004 2005 2006 2007 |
| Material | Zinc AlloyCarburetor Fuel Pressure Regulator NEW Fit Holley 12-803 2 Port 4 1/2 to 9 PSI | Zinc AlloyFits for Holley 12-803 2 Port 4 1/2 to 9 PSI Carburetor Fuel Pressure Regulator | Zinc Alloy12-804 1-4 PSI Carburetor Fuel Pressure Regulator for Holley 3/8 in NPT | Aluminum12-804 Carburetor Fuel Pressure Regulator fit Holley 1-4 PSI 3/8 inch NPT 1 in.2 | -Fuel Pressure Regulator - Compatible with 1999 - 2008 Suzuki Grand Vitara 2000 2001 2002 2003 2004 2005 2006 2007 |
| Finish | ChromeCarburetor Fuel Pressure Regulator NEW Fit Holley 12-803 2 Port 4 1/2 to 9 PSI | ChromeFits for Holley 12-803 2 Port 4 1/2 to 9 PSI Carburetor Fuel Pressure Regulator | -12-804 1-4 PSI Carburetor Fuel Pressure Regulator for Holley 3/8 in NPT | Chrome12-804 Carburetor Fuel Pressure Regulator fit Holley 1-4 PSI 3/8 inch NPT 1 in.2 | -Fuel Pressure Regulator - Compatible with 1999 - 2008 Suzuki Grand Vitara 2000 2001 2002 2003 2004 2005 2006 2007 |
Similar items that fit perfectly
Based on customer reviews
90 Degree Socketless Push-On Hose End Fitting, -8 AN $22.36
$2236current price $22.36+$13.99 shipping90 Degree Socketless Push-On Hose End Fitting, -8 AN
154.9 out of 5 Stars. 15 reviewsShipping, arrives in 3+ days45 Degree Socketless Push-On Hose End, -8 AN $23.33
$2333current price $23.33+$13.99 shipping45 Degree Socketless Push-On Hose End, -8 AN
34 out of 5 Stars. 3 reviewsShipping, arrives in 3+ daysSmall Block Chevy Header Flange Plate - 1 3/4 Inch $69.99
$6999current price $69.99+$13.99 shippingSmall Block Chevy Header Flange Plate - 1 3/4 Inch
44.5 out of 5 Stars. 4 reviewsShipping, arrives in 3+ daysPickup For H.V. Pump, SBC $23.21
$2321current price $23.21+$13.99 shippingPickup For H.V. Pump, SBC
174.2 out of 5 Stars. 17 reviewsShipping, arrives in 3+ days90 Degree Socketless Push-On Hose End, -6 AN $20.43
$2043current price $20.43+$13.99 shipping90 Degree Socketless Push-On Hose End, -6 AN
114.9 out of 5 Stars. 11 reviewsShipping, arrives in 3+ daysSuperlift 91230 4-6" Lift w/Bulletproof Brake Hses Frnt for 87-90 Ford Bronco II Fits select: 1988-1989 FORD RANGER $239.99
$23999current price $239.99Superlift 91230 4-6" Lift w/Bulletproof Brake Hses Frnt for 87-90 Ford Bronco II Fits select: 1988-1989 FORD RANGER
44 out of 5 Stars. 4 reviewsShipping, arrives in 3+ daysOil Filler Cap - Compatible with 2001, 2003 - 2006 Hyundai Santa Fe 2004 2005 $19.95
$1995current price $19.95Oil Filler Cap - Compatible with 2001, 2003 - 2006 Hyundai Santa Fe 2004 2005
45 out of 5 Stars. 4 reviewsShipping, arrives in 3+ daysFront Outer CV Boot Kit - Compatible with 2001 - 2006 Hyundai Santa Fe 2.4L 4-Cylinder 2002 2003 2004 2005 $27.95
$2795current price $27.95Front Outer CV Boot Kit - Compatible with 2001 - 2006 Hyundai Santa Fe 2.4L 4-Cylinder 2002 2003 2004 2005
55 out of 5 Stars. 5 reviewsShipping, arrives in 3+ daysSpeedway Motors Truck 5-Lug Rear Axle Conversion Kit, Fits Chevy 1965-1969, Includes Complete Kit with Axles, Wheel Studs and New Brake Drums, 5 Lug Axel to Install into 6 Lug $563.99
$56399current price $563.99Speedway Motors Truck 5-Lug Rear Axle Conversion Kit, Fits Chevy 1965-1969, Includes Complete Kit with Axles, Wheel Studs and New Brake Drums, 5 Lug Axel to Install into 6 Lug
164.9 out of 5 Stars. 16 reviewsShipping, arrives in 3+ days
Customer ratings & reviews
Popular items in this category
Best selling items that customers love
Carburetor Rebuild Kit For Holley 4150 4776 4777 4779 4780 4781 Carb Repair Kit $32.99
Sponsored$3299current price $32.99Carburetor Rebuild Kit For Holley 4150 4776 4777 4779 4780 4781 Carb Repair Kit
Shipping, arrives in 3+ daysUniversal Adjustable 1-5 PSI Carb Fuel Pressure Regulator Kit with 0-15 PSI Gauge, Fuel Block,Adapters $28.99
Sponsored$2899current price $28.99Universal Adjustable 1-5 PSI Carb Fuel Pressure Regulator Kit with 0-15 PSI Gauge, Fuel Block,Adapters
Shipping, arrives in 3+ daysHolley Performance 12-803 Fuel Pressure Regulator $51.19
$5119current price $51.19Holley Performance 12-803 Fuel Pressure Regulator
283.9 out of 5 Stars. 28 reviewsSave withShipping, arrives tomorrowHolley Fuel Pressure Regulator & Liquid Filled Gauge Kit 4.5-9PSI $87.99 $87.99/count
$8799current price $87.99$87.99/count+$13.99 shippingHolley Fuel Pressure Regulator & Liquid Filled Gauge Kit 4.5-9PSI
14 out of 5 Stars. 1 reviewsShipping, arrives in 3+ daysHolley 20-120 Billet Regulator Bracket for 4150/4160 Carburetors $82.33
$8233current price $82.33Holley 20-120 Billet Regulator Bracket for 4150/4160 Carburetors
Save withShipping, arrives in 3+ daysHolley Performance 26-36 Carburetor Power Valve Block-Off Plug $10.38
$1038current price $10.38Holley Performance 26-36 Carburetor Power Valve Block-Off Plug
15 out of 5 Stars. 1 reviewsSave withShipping, arrives in 3+ daysHolley Performance 6-518-2 Carburetor Needle and Seat $48.74
$4874current price $48.74Holley Performance 6-518-2 Carburetor Needle and Seat
45 out of 5 Stars. 4 reviewsSave withShipping, arrives in 3+ daysHolley Performance 34-7 Carburetor Needle and Seat $11.69
$1169current price $11.69Holley Performance 34-7 Carburetor Needle and Seat
44.8 out of 5 Stars. 4 reviewsSave withShipping, arrives tomorrowHolley Performance 12-289-11 Mechanical Fuel Pump $188.98
$18898current price $188.98Holley Performance 12-289-11 Mechanical Fuel Pump
11 out of 5 Stars. 1 reviewsShipping, arrives in 3+ daysHolley Performance 12-454-11 Mechanical Fuel Pump $174.95
$17495current price $174.95Holley Performance 12-454-11 Mechanical Fuel Pump
23 out of 5 Stars. 2 reviewsSave withShipping, arrives in 3+ daysHolley Performance 20-92 Carburetor Idle Stop Solenoid $161.95
$16195current price $161.95+$13.99 shippingHolley Performance 20-92 Carburetor Idle Stop Solenoid
Shipping, arrives in 3+ daysHolley Performance 720-1 Air Cleaner Assembly $221.95
$22195current price $221.95Holley Performance 720-1 Air Cleaner Assembly
11 out of 5 Stars. 1 reviewsSave withShipping, arrives in 3+ daysHolley Performance 12-440-11 Mechanical Fuel Pump $241.95
$24195current price $241.95Holley Performance 12-440-11 Mechanical Fuel Pump
11 out of 5 Stars. 1 reviewsShipping, arrives in 3+ daysHolley Performance 12-835 Mechanical Fuel Pump $145.95
$14595current price $145.95Holley Performance 12-835 Mechanical Fuel Pump
12 out of 5 Stars. 1 reviewsSave withShipping, arrives in 3+ daysHolley Performance 12-454-20 Mechanical Fuel Pump $249.95
$24995current price $249.95Holley Performance 12-454-20 Mechanical Fuel Pump
15 out of 5 Stars. 1 reviewsSave withShipping, arrives in 3+ daysHolley Performance 12-289-13 Mechanical Fuel Pump $235.95
$23595current price $235.95Holley Performance 12-289-13 Mechanical Fuel Pump
Shipping, arrives tomorrowHolley Performance 12-327-13 Mechanical Fuel Pump $185.95
$18595current price $185.95Holley Performance 12-327-13 Mechanical Fuel Pump
15 out of 5 Stars. 1 reviewsSave withShipping, arrives in 3+ daysHolley Performance 12-833 Mechanical Fuel Pump $139.95
$13995current price $139.95Holley Performance 12-833 Mechanical Fuel Pump
24.5 out of 5 Stars. 2 reviewsSave withShipping, arrives in 3+ daysHolley Performance 12-454-13 Mechanical Fuel Pump $174.95
$17495current price $174.95Holley Performance 12-454-13 Mechanical Fuel Pump
25 out of 5 Stars. 2 reviewsSave withShipping, arrives in 3+ days
Related pages
- Fuel Shut-Off Valves
- Holley Fuel Pressure Regulator Rebuild Kit
- Holley Fuel Pressure Regulator Bracket
- Fuel Pressure Regulator Service Kits
- Holley Fuel Pressure Regulator
- Honda Fit Fuel Pressure Regulator
- Honda Element Fuel Injection Idle Air Control Valve
- Honda S2000 Fuel Pressure Regulator
- Fuel Injection Regulators on Advance Auto Parts Shop
- Performance Fuel Regulators
- Fuel Shutoff Solenoids
- Carburetor Accelerator Pumps and Parts





