Autobest F4251 Electric Fuel Pump

Electric Fuel Pump for Toyota and Lexus Applications

The Autobest F4251 is an in-tank electric fuel pump built for select Toyota and Lexus vehicles, including Land Cruiser, LX470, Tundra, Sequoia, Supra, GS300, SC300, and related applications. It uses a turbine pump design, 12V operation, and a male rectangular connector for a direct replacement-style installation.

Key Features

• In-tank electric fuel pump with turbine-style operation
• 12V system with 8.5A average current draw
• Average flow rating of 36.988 GPH
• Operating pressure range: 79.77 to 101.53 PSI
• Male connector, 1 connector, rectangular shape
• Male terminals with 2 inserts
• Performance-grade construction using top-quality materials
• Limited lifetime warranty
• Strainer sold separately

Detailed Description

Autobest F4251 is an electric fuel pump engineered for fuel delivery service in select Lexus and Toyota platforms. It is an in-tank, performance-grade turbine pump with a tube-style outlet, filter-style inlet, and external strainer arrangement. Autobest states that each pump is built with top-grade components and tested throughout manufacturing to support durability and reliable operation. This part cross-references Airtex E8240 and Delphi FE0174 for the same application.

Fits 1998-2007 Lexus LX470, N/A; Fits 1998-2007 Toyota Land Cruiser, N/A; Fits 2001-2004 Lexus IS300, N/A; Fits 2000-2004 Toyota Tundra, N/A; Fits 2003 Toyota Sequoia, N/A; Fits 2001-2002 Toyota Sequoia, N/A; Fits 1998-2000 Lexus GS300, N/A; Fits 1998-2000 Lexus GS400, N/A; Fits 1992-2000 Lexus SC300, N/A; Fits 1996-2000 Lexus SC400, N/A; Fits 1993-1998 Toyota Supra, N/A; Fits 1993-1997 Lexus GS300, N/A; Fits 1996-1997 Lexus LX450, N/A; Fits 1993-1997 Toyota Land Cruiser, N/A; Fits 1994-1997 Toyota Previa, N/A.

What It Helps Address

• Hard starting caused by weak fuel pressure
• Engine hesitation under load from inconsistent fuel delivery
• Stalling related to pump wear or internal fatigue
• Low fuel pressure conditions in high-mileage vehicles
• Fuel delivery issues on Toyota and Lexus in-tank pump applications

Installation Notes and Tips

Confirm vehicle fitment by year, make, model, and application details before installation. This pump uses a single male connector and male terminals with insert-style terminals. The strainer is sold separately, and Autobest notes that strainer F311S, F261S, or F253S is required for warranty validation depending on the vehicle application. Verify inlet and outlet orientation, and replace any worn fuel system components during service.

Quality Assurance

Autobest uses top-quality materials and tests fuel pumps at multiple points during manufacturing to support consistent performance. The F4251 includes a limited lifetime warranty.