MagnaFuel 4303 - High-Performance In-line Electric Fuel Pump

If you're looking for a powerful and reliable in-line electric fuel pump, the MagnaFuel 4303 is a great option. It can support up to 2,000 hp, making it ideal for street or performance use. Plus, it features quiet operation, without skimping on power. So if you're looking for a pump that can give you the power you need, without being too loud, the MagnaFuel 4303 is a great choice.

Fuel Pump Pro-Tuner Series Delivers Incredible Performance and Reliability

Say goodbye to leaks forever, thanks to the new design with no pump shaft seals in this fuel pump pro-tuner line. The Magnafuel mp 4303 pump body is CNC machined from aircraft aluminum to give you outstanding durability. The rotor is also precision CNC machined and balanced to ensure smooth operation.

What's more, the MagnaFuel 4303 is self-priming, so you don't have to worry about air pockets in the fuel line. Plus, it comes with a pre-filter, so your fuel will be clean and free of debris.

How do MagnaFuel pumps compare to the competition?

In a word: better. These items have excellent ratings in the industry. MagnaFuel pumps are more compact, so they fit in tighter spaces. They're also more efficient, so they draw less current while providing more power. Plus, they're rebuildable, so you can keep them running like new for years to come.

These pumps' bodies are covered in a hard anodized finish that can take the abuse of high-performance driving. The pump can also be mounted horizontally or vertically with the included bracket. And Polymer wear plates for smooth quieter operation. Please note that this product does not come with fittings so make sure to purchase all necessary accessories for your fuel delivery system.

What you need to know about In-line Fuel Pumps

In-line electric fuel pumps can work with almost any type of application, including fuel cells or tanks. These pumps can be paired in a dual set-up or even tripled together and wired separately with various forms of switches to activate them at different times depending on fuel requirements. External electric fuel pumps can be a good choice for vehicles that would be limited by an in-tank pump.

Inline fuel pumps use the incoming fuel to cool the internal components. Because of this, they can overheat in certain situations like stop-and-go traffic. The need to be mounted as close to the fuel tank or cell as possible and away from any heat sources or the exhaust. Typically close to the rear of the vehicle. It is important to keep this in mind when using an inline fuel pump. If you are not sure if your application will work with an inline fuel pump, please consult a professional. You can read more about other types of fuel pumps and how to determine your specific needs with our detailed fuel pump guide. Also, find out the signs of a failing fuel pump, here.

Determining your fuel pump sizing and fuel flow requirement

To add a new fuel pump to your build, the first thing you need is your brake specific fuel consumption or BSFC. Most engines BSFC’s are available with a simple online search. (Note that the numbers vary between naturally aspirated engines to ones that are running a turbo or supercharger.) You multiply that number by your horsepower goal to calculate your pounds of fuel per hour. Next, divide that number by 1.6 to determine the liter per hour fuel requirement. Once you have that number you can accurately start shopping for the right fuel pump. To learn more, check out our fuel pump guide or download our e-book to learn how to design your entire fuel system. And please refer to the Magnafuel Protuner series instructions for official documentation.

Shop confidently with Snake Eater Performance

At Snake Eater we love cars and we love helping other people that love cars. We are here to help you shop for the right parts for your fuel systems needs and all the accessories. We only carry the best brand names. You won't find better knowledge or customer service. We are happy to answer any questions you have. From your intake, to camshafts, to exhaust to the fuel system. Our mission is to help you get the most out of your car.

Our lifetime warranty policy guarantees that our products will last. We're passionate about cars, and we'll be with you every step of the way. If you have any questions, don't hesitate to reach out to us about your system. Our amazing customer service team is just a phone call away and we have your back.

Additional features

* No pump shaft seals
* CNC-machined, hard-anodized aircraft aluminum
* High-torque custom motor with low current draw
* Double support bearing
* Can be mounted vertically or horizontally
* Polymer wear plates for quiet, smooth operation
* 14 amps at 45 psi
* -8 AN inlet and outlet (fittings are sold separately)

Product Details

Manufacturer's Part Number: MP-4303

Product Line: MagnaFuel ProTuner 750 Series In-Line Fuel Pumps

Fuel Pump Type: Electric external

Fuel Pump Voltage: 12 V

Fuel Pressure (psi): 120 psi

Fuel Pressure Regulator Included: No

Sending Unit Included: No

Fuel Pump Inlet Size: -8 AN

Inlet Quantity: One

Inlet Attachment: Female straight cut O-ring

Fuel Pump Outlet Size: -8 AN

Outlet Quantity: One

Outlet Attachment: Female straight cut O-ring

Gasket Included: No

Wiring Harness Included: No

Mounting Bracket Included: Yes

Mounting Hardware Included: No

Pulley Included: No

Quantity: Sold individually.

Color: Blk

Legal Disclaimer

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles and Racing Use Only Vehicles.

The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

• 1965 and older U.S. manufactured California Certified vehicles
• 1967 and older U.S. manufactured Federally Certified vehicles
• 1967 and older Foreign manufactured vehicle

The following vehicles are considered Racing Use Only Vehicles:

• Racing Use Only Vehicles are vehicles that are used exclusively for competition and that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

The following vehicles are considered Emissions Controlled Vehicles:

• 1966 and newer U.S. manufactured California Certified vehicles
• 1968 and newer U.S. manufactured Federally Certified vehicles
• 1968 and newer Foreign manufactured vehicle