Carter STS-121 Fuel Pump Strainer - Front or Rear

Carter STS-121 Fuel Pump Strainer

The Carter STS-121 fuel pump strainer is a direct-fit fuel system filter component for select Ford, Lincoln, Mercury, and Jaguar applications. It is built with OE fit, form, and function in mind, with a 102.2 mm length, 43 mm width, green media strainer material, and push-on attachment for the specified pump connection.

Key Features

• Fuel pump strainer for air and fuel delivery service
• 102.2 mm length and 43 mm width for application-specific fitment
• Green media strainer material for fuel filtration at the pump inlet
• Push-on attachment type with 10.9 mm to 11.0 mm inside diameter fitting
• Fits select Ford Crown Victoria, F-150, E-Series, Explorer, Mustang, and related applications
• Part number STS-121 for catalog and cross-reference lookup

Detailed Description

Carter STS-121 is a fuel pump strainer used at the inlet side of the fuel pump to help keep debris out of the fuel delivery system. Carter’s fuel systems program focuses on OE-style fitment and vehicle coverage, making this strainer a practical replacement for service work on 1993-2006 Ford, Lincoln, Mercury, and Jaguar platforms. This part number STS-121 is listed for applications including Ford Crown Victoria, Ford F-150, Ford E-150/E-250/E-350, Ford Explorer, Ford Mustang, Lincoln Town Car, Mercury Grand Marquis, and Jaguar XJ8/XJR/XK8/XKR/Vanden Plas.

This part cross-references Airtex Fuel Pumps FS175 and Spectra Premium STR41 for the same application.

What It Helps Address

• Restricted fuel flow caused by a clogged pump inlet strainer
• Fuel delivery issues related to debris entering the pump assembly
• Poor pump protection in high-mileage Ford and Jaguar fuel systems
• Service replacement needs during fuel pump maintenance
• Aftermarket filtration enhancement on listed applications

Installation Notes and Tips

Verify the pump connection style before installation, since this strainer uses a push-on attachment and a 10.9 mm to 11.0 mm fitting inside diameter. Confirm the vehicle year, make, model, and pump position against the fitment list, especially for rear-mounted Ford E-Series and related applications. For 1996-2006 Ford Crown Victoria, 1997-2003 Ford F-150, and 1998-2003 Jaguar XJ8/XJR/Vanden Plas applications, match the listed notes for aftermarket filtration enhancement before service.

Quality Assurance

Carter positions this fuel systems part for premium OE fit, form, and function with broad vehicle coverage and problem-solving design features. The STS-121 is specified with defined dimensions and attachment details to support accurate replacement selection.