Carter P70304 Electric Fuel Pump - In-Line

Carter P70304 Electric Diesel Fuel Pump

The Carter P70304 is a 12V external electric fuel pump for diesel applications with specific vehicle fitment. It uses a hose barb inlet, threaded outlet, and male threaded terminals for a direct-style replacement on supported Nissan and Isuzu applications.

• Electric fuel pump for diesel fuel systems
• 12V, negative ground design
• External, in-line mounting configuration
• Hose barb inlet with threaded outlet
• Specific fit application for selected Nissan and Isuzu vehicles
• Male connector and male terminal design
• No fuel sending unit, regulator, strainer, gasket, seal, or mounting hardware included

Fitment Coverage

• Fits 1986 Nissan 720, In-Line. Includes fuel fittings, terminals, and isolator for proper installation.
• Fits 1983-1984 Isuzu Impulse, In-Line. Includes fuel fittings, terminals, and isolator for proper installation.
• Fits 1982-1984 Nissan Maxima, In-Line. Includes fuel fittings, terminals, and isolator for proper installation.
• Fits 1980-1983 Nissan 200SX, In-Line. Includes fuel fittings, terminals, and isolator for proper installation.
• Fits 1979-1983 Nissan 280ZX, In-Line. Includes fuel fittings, terminals, and isolator for proper installation.
• Fits 1981 Nissan 810, In-Line. Includes Fuel Fittings, Terminals, and Isolator; To 1981/08; without California Emissions System.
• Fits 1981 Nissan Maxima, In-Line. Includes Fuel Fittings, Terminals, and Isolator; To 1981/08; without California Emissions System.
• Fits 1977-1980 Nissan 810, In-Line. Includes fuel fittings, terminals, and isolator for proper installation.

Detailed Description

Built for diesel fuel delivery, the Carter P70304 electric fuel pump is a specific-fit external unit with OE-style form and function for supported vehicles. The pump uses a hose barb inlet, threaded outlet, and 2-wire, 2-terminal threaded connection layout, making it a practical replacement for in-line fuel system service on Nissan 720, Maxima, 200SX, 280ZX, 810, and Isuzu Impulse applications. This part cross-references Airtex Fuel Pumps E8312 and Delphi FD0035 for the same application.

Carter’s fuel systems lineup focuses on OE fit, form, and function with broad vehicle coverage and problem-solving features. For buyers searching for a diesel electric fuel pump for 1980s Nissan and Isuzu in-line applications, the P70304 provides a direct-match option with the correct external mounting style and negative-ground 12V electrical setup.

What It Helps Address

• Hard starting caused by weak diesel fuel delivery
• Fuel starvation at the engine under load
• Loss of pressure from a failing external pump
• Intermittent operation from worn electrical pump components
• Replacement needs on in-line Nissan and Isuzu diesel fuel systems

Installation Notes

Verify the vehicle’s year, engine configuration, and in-line pump location before ordering. This pump uses a hose barb inlet and threaded outlet, so matching fuel fittings are required for proper installation. The listing notes include fuel fittings, terminals, and isolator for several applications, but mounting hardware, gasket or seal, strainer, regulator, and wiring harness are not included.

For best results, confirm negative-ground 12V electrical compatibility and compare the original connector style, terminal type, and outlet arrangement to the existing pump before installation. The part number P70304 should be matched to the vehicle application shown in the fitment list.

Quality Assurance

Carter manufactures this fuel pump as a specific-fit replacement with OE-style fit, form, and function for supported diesel applications. The brand’s fuel systems program is built around application coverage and replacement accuracy for vehicles such as the Nissan 720, Nissan Maxima, Nissan 200SX, and Nissan 280ZX.