Mahle GS33442 Fuel Injector Seal Kit

Mahle GS33442 Fuel Injector Seal Kit

Restore injector sealing performance with the Mahle GS33442 fuel injector seal kit. Built to OEM standard and using fluoroelastomer O-rings, this kit is made for service work on Ford Super Duty diesel applications where injector sealing integrity matters.

Compatible with Ford E-350 Super Duty, Ford F-250 Super Duty, Ford F-350 Super Duty, Ford E-350 Club Wagon, and Ford Excursion applications listed below, the GS33442 supports clean injector resealing during maintenance or repair. Mahle gaskets are trusted by OEMs and technicians for sealing performance across demanding engine service jobs.

Key Features

• OEM Standard item grade for service and repair work
• Fluoroelastomer O-rings for fuel-system sealing durability
• Includes injector nozzle washer for injector service
• Designed for Ford diesel injector seal replacement applications
• Mahle GS33442 cross-references FEL-PRO ES73181, Ford 3C3Z-9229-AA, and Navistar 1843682 / 1843682C91

Detailed Description

The Mahle GS33442 is a fuel injector seal kit engineered for injector resealing on select Ford diesel trucks and vans. It includes the sealing components needed to address injector leakage at the upper, middle, and lower sealing points, helping maintain proper fuel system integrity during injector service. The fluoroelastomer O-ring material is selected for fuel exposure, while the OEM-standard construction supports service-level fit and function. This part number, GS33442, is commonly searched for Ford E-350 Super Duty and Ford F-250 Super Duty injector seal replacement work.

This part cross-references FEL-PRO ES73181 for the same application.

What It Helps Fix

• Fuel seepage around injector sealing surfaces
• Hard starting caused by injector seal leakage
• Rough idle related to compromised injector seals
• Loss of fuel system pressure at the injector
• Service issues during injector removal and resealing

Installation Notes and Tips

• Fits 2004-2010 Ford E-350 Super Duty, N/A
• Fits 2003-2007 Ford F-250 Super Duty, N/A
• Fits 2003-2007 Ford F-350 Super Duty, N/A
• Fits 2004-2005 Ford E-350 Club Wagon, N/A
• Fits 2003-2005 Ford Excursion, N/A
• Clean injector bores and sealing surfaces before installation
• Replace all sealing points during injector service to maintain consistent sealing
• Verify injector and engine application by VIN before ordering

Quality Assurance

Mahle manufactures sealing products used by OEMs and professional technicians worldwide. The GS33442 is built to OEM standard for service applications and is backed by Mahle’s reputation for precision gasket and sealing production.