1. Introduction
This manual provides detailed instructions for the installation, operation, maintenance, and troubleshooting of the HFP-404 Fuel Pump. The HFP-404 is engineered as a direct replacement for OE # 0570-272 and 1670-531, ensuring reliable fuel delivery for compatible Arctic Cat UTVs and snowmobiles. Please read this manual thoroughly before proceeding with installation or use.
2. Vehicle Compatibility
The HFP-404 Fuel Pump is compatible with the following Arctic Cat models:
- 2004-2008 T660
- 2006-2008 Panther 660
- 2007-2008 Jaguar Z1 1100
- 2008-2009 TZ1
- 2009 TZ1 Park
- 2009 TZ1 Turbo
- 2009 Z1 1100
- 2009 Z1 Bearcat
- 2009 Z1 Turbo
- 2009-2010 Prowler 1000
- 2009-2010 Prowler 550
- 2008-2010 Prowler 700
3. What's Included
Your HFP-404 Fuel Pump kit includes the following components:
- Fuel Pump (HFP-404)
- Fuel Strainer
- Rubber Hose
- Rubber Grommet

4. Safety Information
Always prioritize safety when working with fuel systems. Failure to follow these guidelines may result in injury or damage to property.
- Disconnect Battery: Always disconnect the vehicle's battery before beginning any work on the fuel system.
- Relieve Fuel Pressure: Ensure fuel system pressure is relieved according to your vehicle's service manual before disconnecting fuel lines.
- Work in a Well-Ventilated Area: Fuel vapors are flammable and hazardous. Work outdoors or in a well-ventilated garage.
- No Open Flames or Sparks: Keep all ignition sources away from the work area. This includes cigarettes, open flames, and tools that may create sparks.
- Wear Protective Gear: Use appropriate personal protective equipment, including safety glasses and gloves.
- Contain Fuel Spills: Have absorbent materials ready to clean up any spilled fuel. Dispose of contaminated materials properly.
- Professional Installation Recommended: If you are not confident in your ability to perform this installation safely, seek assistance from a qualified mechanic.
5. Installation Instructions
The HFP-404 fuel pump is designed for OE-fit and straightforward replacement. Some assembly of the pump components may be required. Refer to your vehicle's specific service manual for detailed steps on accessing and removing the existing fuel pump assembly.
General Installation Steps:
- Preparation: Ensure the vehicle is on a stable, level surface. Disconnect the battery and relieve fuel system pressure.
- Access Fuel Pump: Locate and access the fuel pump assembly. This typically involves removing the fuel tank or an access panel.
- Disconnect Wiring and Hoses: Carefully disconnect the electrical connector and fuel lines from the old pump assembly. Be prepared for residual fuel.
- Remove Old Pump: Remove the old fuel pump from its housing or module. Note its orientation.
- Assemble New Pump: Install the new HFP-404 fuel pump into the existing housing. Attach the new fuel strainer, rubber hose, and rubber grommet as needed. Ensure all connections are secure.

- Install New Pump Assembly: Place the assembled new fuel pump back into the fuel tank or housing, ensuring proper seating and orientation.
- Reconnect: Reconnect the fuel lines and electrical connector. Double-check all connections for tightness to prevent leaks.
- Test System: Reconnect the battery. Turn the ignition to the 'ON' position (without starting the engine) several times to prime the fuel system and check for leaks.
- Start Engine: Start the engine and allow it to run, checking for proper operation and any signs of fuel leaks.
- Final Assembly: Reinstall any removed access panels or components.

6. Operating Principles
The HFP-404 is an electric fuel pump designed for Electronic Fuel Injection (EFI) systems. Its primary function is to draw fuel from the tank and deliver it under consistent pressure to the engine's fuel injectors. This ensures optimal fuel atomization and combustion, contributing to efficient engine performance.
Upon turning the ignition key to the 'ON' position, the fuel pump will typically run for a few seconds to prime the system. Once the engine starts, the pump operates continuously to maintain the required fuel pressure. The pump is designed to meet or exceed OEM specifications for flow rate and pressure, providing reliable operation in various conditions.
7. Maintenance
The HFP-404 fuel pump is a sealed unit and does not require routine maintenance. However, maintaining a healthy fuel system is crucial for the longevity of the pump and overall vehicle performance.
- Keep Fuel Tank Full: Running the fuel tank consistently low can cause the fuel pump to overheat as it relies on fuel for cooling.
- Use Quality Fuel: Always use the recommended grade of fuel and avoid contaminated fuel, which can clog the fuel strainer and pump.
- Replace Fuel Filter: Regularly replace your vehicle's fuel filter according to the manufacturer's recommendations. A clogged fuel filter can put excessive strain on the fuel pump.
- Inspect Fuel Lines: Periodically check fuel lines for cracks, leaks, or damage.
8. Troubleshooting
If your vehicle experiences fuel delivery issues, the fuel pump may be the cause. Here are common symptoms and potential solutions:
| Symptom | Possible Cause | Solution |
|---|---|---|
| Engine stalls under load | Insufficient fuel pressure/flow from pump | Check fuel pressure. Inspect fuel filter for clogs. Replace pump if pressure is low. |
| Hard starting | Fuel system not priming, low residual pressure | Listen for pump prime. Check for leaks. Verify electrical connection to pump. |
| Power loss at high speeds or elevations | Pump unable to deliver adequate fuel volume | Check fuel pressure and flow rate. Ensure fuel filter is not restricted. |
| Engine misfires or runs rough | Inconsistent fuel delivery | Verify fuel pressure stability. Check for proper electrical supply to pump. |
| No fuel pump noise when ignition is turned ON | No power to pump, faulty pump, or relay issue | Check fuel pump fuse and relay. Verify electrical connection at pump. Test pump directly if possible. |
If troubleshooting steps do not resolve the issue, it is recommended to consult a qualified mechanic or contact HFP customer support.
9. Specifications
| Feature | Detail |
|---|---|
| Brand | HFP |
| Model Number | HFP-404 |
| Fit Type | Vehicle Specific Fit |
| Vehicle Service Type | Snowmobile, UTV |
| Item Dimensions (L x W x H) | 3 x 4 x 7 inches |
| Material | Metal (internal components), Plastic (body) |
| Part Interchange Info | Direct OE Replacement for 0570-272 and 1670-531 |
| Auto Part Position | Inside (fuel tank) |
| Connector Type | NPT |
| Gas Type | Gasoline |
| Mounting Type | Tank Mount |
| Operation Mode | EFI (Electronic Fuel Injection) |
| Product Grade | Replacement Part (OE Specification Met) |
| Item Weight | 0.94 Pounds |
10. Warranty Information
The HFP-404 Fuel Pump is backed by a Lifetime Warranty. This warranty covers defects in materials and workmanship under normal use and service. For warranty claims or further details, please retain your proof of purchase and contact HFP customer support.
11. Customer Support
For technical assistance, troubleshooting guidance, or warranty inquiries, please contact HFP customer support. Our team is available to help you with any questions regarding your HFP-404 Fuel Pump.
Please visit the official HFP website or refer to your product packaging for the most current contact information.