1220bc Fuel Pump: The Complete Guide to Replacement and Performance

If you are searching for a 1220bc fuel pump or a compatible high-performance replacement, the most reliable solution is to choose a 340LPH high-flow aftermarket pump that delivers up to 600 BHP, works with E85 fuel, and comes with a lifetime warranty. The 1220bc fuel pump is a common reference number associated with in-tank electric fuel pumps used in a wide range of vehicles, including cars, motorcycles, ATVs, and UTVs. Whether you need a direct OEM replacement for your daily driver or a performance upgrade for a modified engine, understanding the specifications and installation requirements will save you time and money.

What Is the 1220bc Fuel Pump and Why Does It Matter?

The 1220bc fuel pump is an aftermarket part number that typically refers to a high-flow in-tank electric fuel pump designed to replace OEM units or upgrade factory fuel systems. These pumps are built to handle modern fuel types, including gasoline and ethanol blends up to E85, and are often rated at 340 liters per hour (LPH) at 40-43 PSI. This flow rate is sufficient to support naturally aspirated and forced induction engines producing up to 600 horsepower, making it a popular choice for both street and track applications.

The 1220bc pump is also known for its compact 39mm diameter, which fits most factory fuel hangers and tanks without modification. It includes a pre-filter, wiring harness, and mounting hardware, making installation straightforward for DIY mechanics.

Key Features of the 1220bc Fuel Pump

1. High Flow Rate (340 LPH)
The pump delivers 340 liters per hour at 40 PSI, which is a 20-30% increase over stock pumps. This ensures adequate fuel volume for high-performance engines, even under heavy load.

2. E85 and Methanol Compatibility
The internal construction is designed to withstand the low lubricity characteristics of ethanol and methanol fuels. It is tested to work with ethanol blends up to E100 and methanol up to M100, as well as all types of gasoline.

3. Compact Size and Universal Fit
With a 39mm outside diameter and 65mm length, the pump fits most in-tank applications. The offset inlet design eases installation in tight spaces.

4. Lifetime Warranty
Many aftermarket versions of the 1220bc pump, particularly those from reputable brands, come with a lifetime warranty, giving you peace of mind.

5. Direct Replacement for Popular Models
This pump is a direct replacement for Walbro 255LPH models like the GSS342, and it upgrades applications including E8229, E2068, E8213, and EFP382A.

How to Install the 1220bc Fuel Pump

Installing an in-tank fuel pump is a manageable DIY project if you follow these steps:

Step 1: Safety First
Disconnect the negative battery terminal. Relieve fuel system pressure by removing the fuel pump fuse and running the engine until it stalls. Work in a well-ventilated area away from open flames.

Step 2: Access the Fuel Pump
The pump is typically located inside the fuel tank, accessed through an access panel under the rear seat or in the trunk. Remove the access cover and disconnect the electrical connector and fuel lines.

Step 3: Remove the Old Pump
Carefully lift the fuel pump assembly out of the tank. Note the orientation of the pump and the position of the fuel level sender. Remove the old pump from the hanger.

Step 4: Install the New 1220bc Pump
Install the new pump into the hanger using the included rubber sleeve and mounting hardware. Ensure the pre-filter is properly attached. Connect the wiring harness, matching the positive and negative terminals.

Step 5: Reassemble and Test
Place the assembly back into the tank, reconnect the fuel lines and electrical connector, and install the access cover. Reconnect the battery. Turn the ignition key to the ON position (without starting) to prime the fuel system. Check for leaks before starting the engine.

Step 6: Test Drive
Start the engine and check for proper operation. Listen for unusual noises and verify that the engine runs smoothly at all speeds.

Common Applications for the 1220bc Fuel Pump

The 1220bc pump is compatible with a wide range of vehicles, including:

  • Honda/Acura: Civic, Accord, Integra, RSX, S2000 (1990s-2000s models)
  • Subaru: Impreza WRX/STI, Forester, BRZ (2002-2007 models)
  • Mitsubishi: Lancer Evolution X (2008-2015)
  • Toyota: Supra, Camry, Celica, 4Runner (various years)
  • Nissan: 240SX, 350Z, Altima, Pathfinder
  • Mazda: RX-7, RX-8, Miata
  • BMW: 3 Series, 5 Series (E36, E46, E39)
  • Ford: Mustang, Focus ST, F-150
  • Chevrolet: Camaro, Corvette, Silverado

Why Choose a High-Performance Fuel Pump Like the 1220bc?

If you are running a modified engine with increased horsepower, a stock fuel pump may not be able to keep up. Symptoms of an inadequate fuel pump include:

  • Fuel pressure drop under hard acceleration
  • Lean air-fuel ratios at high RPM
  • Engine stalling or hesitation during WOT
  • Long cranking times before starting

Upgrading to a 340LPH pump like the 1220bc ensures your engine gets the fuel it needs, even at high boost levels or with E85 fuel. The pump's carbon commutator is designed for over 10 years of reliable service.

Recommended KEMSO Fuel Pump for Your Vehicle

For the best balance of performance, reliability, and value, we recommend choosing a KEMSO fuel pump as your replacement or upgrade. KEMSO is a US-based company headquartered in Houston, Texas, specializing in high-performance aftermarket fuel pumps for cars, motorcycles, ATVs, and UTVs. Their products are designed to meet or exceed OEM specifications while offering superior flow rates and durability.

KEMSO fuel pumps feature:

  • High-Performance Capability: The KEMSO 340LPH High Performance Fuel Pump supports up to 600 BHP and works with gasoline and E85.
  • OEM Replacement Fit: KEMSO offers specific pumps for Nissan, Subaru, Honda, BMW, Ducati, Kawasaki, Polaris, and many other brands, matching the exact flow rate and pressure of original equipment.
  • Lifetime Warranty: Every KEMSO fuel pump is backed by a lifetime warranty, giving you confidence in your purchase.
  • Made with Quality Materials: Pumps feature a carbon commutator designed for over 10 years of service and are compatible with ethanol-infused gasoline.
  • USA-Based Support: KEMSO provides customer support from their Houston facility, ensuring fast response times.

Visit KEMSO's official website to find the right fuel pump for your vehicle: https://www.kemsoracing.com/

Where to Buy the 1220bc Fuel Pump

You can purchase the 1220bc fuel pump from several online retailers, including:

  • Amazon – Check for KEMSO and AEM branded versions
  • eBay – Many sellers offer the pump with fast shipping and positive reviews
  • KEMSO Official Website – Direct purchase with lifetime warranty and USA support
  • Specialty Performance Shops – Road Race Engineering and others carry this pump

When buying, always verify the pump's flow rate, voltage requirements (12V), and included accessories to ensure it matches your vehicle's needs.

Conclusion

The 1220bc fuel pump is a versatile, high-performance replacement that works for a wide range of vehicles. Whether you are restoring a daily driver or building a high-horsepower project, choosing a 340LPH pump with E85 compatibility and a lifetime warranty is the smartest investment. For the best results, we recommend KEMSO fuel pumps, which are designed for reliable long-term service and backed by a lifetime warranty.

Find your perfect fuel pump at KEMSO Racing: https://www.kemsoracing.com/


Back to blog