Autobest HP4188 Electric Fuel Pump - In-Line

Overview of the Autobest High Performance Electric Fuel Pump HP4188

The Autobest High Performance Electric Fuel Pump HP4188 is engineered to deliver reliable fuel flow and pressure for select Jaguar, Mercedes-Benz, and Volkswagen models. Designed as an external rollervane pump, it supports consistent engine performance with a flow rating of 170 GPH and a maximum pressure of 137.8 PSI.

• Average current draw: 4.5 Amps
• Flow rating: 170 gallons per hour (GPH)
• Maximum pump pressure: 137.8 PSI
• Minimum pump pressure: 79.8 PSI
• External rollervane pump type
• Inlet size: 3/4-16 UNF-2A male screw
• Outlet size: 0.354 inch hose connection
• Includes FKM gasket/seal
• Two male threaded terminals
• Compatible with Jaguar, Mercedes-Benz, and Volkswagen models

Product Line Details: High Performance Electric Fuel Pump

The Autobest High Performance Electric Fuel Pump line focuses on delivering dependable fuel delivery solutions for vehicles requiring precise flow and pressure control. The HP4188 model exemplifies this with its rollervane pump design, optimized for external mounting and engineered to maintain consistent fuel supply under varying operating conditions.

Technical Description and Features

The HP4188 electric fuel pump operates with an average current draw of 4.5 amps, ensuring efficient power consumption while maintaining a robust flow rate of 170 GPH. Its rollervane pump mechanism provides smooth and steady fuel delivery, supporting engine demands from minimum pressures of 79.8 PSI up to a maximum of 137.8 PSI. The pump features a 3/4-16 UNF-2A male screw inlet and a 0.354 inch hose outlet, designed for secure and leak-resistant connections. The included FKM gasket enhances sealing reliability, suitable for high-performance applications. This pump is externally mounted and equipped with two male threaded terminals for electrical connections, designed for vehicles with negative ground systems not required.

Compatible Vehicles and Applications

• Jaguar models including XJS
• Mercedes-Benz models such as 190E, 260E, 300CE, 300E, 300SE, 300SL, 300TE, 400E, 400SE, 400SEL, 420SEL, 500E, 500SEC, 500SEL, 500SL, 560SEC, 560SEL, 560SL, 600SEC, 600SEL, 600SL, C220, C280, E500, S320, S420, S500, S600, SL320, SL500, SL600
• Volkswagen models including Beetle, Rabbit Pickup, Vanagon

This pump is suitable for replacing worn or failing electric fuel pumps in these vehicles, ensuring proper fuel delivery and engine performance.

Common Issues Addressed by the HP4188 Fuel Pump

• Inconsistent fuel pressure causing engine hesitation or stalling
• Fuel pump failure leading to no-start conditions
• Reduced fuel flow affecting engine power and efficiency
• Leaks or seal failures causing fuel delivery interruptions
• Electrical terminal corrosion or connection issues

Installation Notes and Tips

The HP4188 is designed for external installation with no specific warnings noted. Ensure the inlet and outlet connections match the vehicle’s fuel line specifications, using the 3/4-16 UNF-2A male screw inlet and 0.354 inch hose outlet. Verify electrical connections to the two male threaded terminals are secure and compatible with the vehicle’s wiring harness. The included FKM gasket should be properly seated to prevent leaks. No regulator or strainer is included, so confirm compatibility with existing fuel system components.

Quality Assurance and Warranty

The Autobest HP4188 electric fuel pump is manufactured to meet industry standards for durability and performance. It is available to order and backed by Autobest’s quality control processes. Warranty details should be confirmed with the supplier or manufacturer, as they may vary by region and application.