Mahle GS33757 Fuel Injector Seal Kit

Fuel Injector Seal Kit for GM HD Trucks

Mahle GS33757 is a fuel injector seal kit for select Chevrolet Silverado 2500 HD, Silverado 3500, GMC Sierra 2500 HD, and Sierra 3500 applications. It provides the gaskets and seals needed during fuel injector installation, helping restore proper sealing at the injector interface.

• Fuel injector seal kit for service work on GM heavy-duty trucks
• Contains the gaskets and seals required for fuel injector installation
• Fits 2001-2004 Chevrolet Silverado 2500 HD
• Fits 2001-2004 Chevrolet Silverado 3500
• Fits 2001-2004 GMC Sierra 2500 HD
• Fits 2001-2004 GMC Sierra 3500
• Mahle GS33757 for injector sealing service

Application Details

Compatible With 2001-2004 Chevrolet Silverado 2500 HD, N/A; 2001-2004 Chevrolet Silverado 3500, N/A; 2001-2004 GMC Sierra 2500 HD, N/A; and 2001-2004 GMC Sierra 3500, N/A. Mahle GS33757 is built for fuel injector service where sealing components must be replaced during reassembly. Mahle gaskets are used by OEMs and technicians worldwide for sealing applications, and this kit follows that same service-focused approach.

Common Repair Uses

• Fuel seepage at injector sealing points
• Hard starting caused by poor injector sealing
• Rough idle related to air or fuel leakage around injectors
• Maintenance during injector removal and reinstallation
• Restoring proper sealing after injector service

Installation Notes

Clean the injector bores and mating surfaces before installation. Replace worn seals and gaskets during injector service, and verify that each sealing surface is free of debris or damage before reassembly. Confirm vehicle fitment by year, make, and model before ordering.

Quality Assurance

Mahle is known for gasket and sealing products used in OEM and professional repair environments. Part number GS33757 is a service kit intended to support proper fuel injector sealing on the listed Chevrolet and GMC HD truck applications.