Standard Ignition SK67 Fuel Injector Seal Kit

Fuel Injector Seal Kit for GM 6.6L Rail Service

Standard Ignition SK67 is a fuel injector seal kit built for rail service on select Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500, GMC Sierra 2500 HD, and GMC Sierra 3500 diesel applications. It is designed for service work where injector sealing surfaces need to be renewed to restore proper fuel system sealing and reduce leak-related drivability concerns.

Key Features

• Fuel injector seal kit for rail service applications
• Compatible with 2001-2004 Chevrolet Silverado 2500 HD and Silverado 3500
• Compatible with 2001-2004 GMC Sierra 2500 HD and Sierra 3500
• Built with black, silver, and copper sealing components
• Includes 22 O-rings for injector sealing service
• Designed to service 4 injectors per kit
• Standard Ignition SK67 cross-references MAHLE GS33578A for the same application

Detailed Description

Standard Ignition SK67 is an OE-style fuel injector seal kit for diesel rail service on 2001-2004 Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500, GMC Sierra 2500 HD, and GMC Sierra 3500 models. The kit uses multiple seal sizes, including 19.304 mm and 10.922 mm inside diameters, to address injector sealing points during service. Standard Ignition tests and inspects products in an ISO 9000-compliant environment and engineers them to meet or exceed OE specifications.

This part number, SK67, is intended for technicians replacing worn injector seals during rail service on GM heavy-duty trucks. If you are searching for a fuel injector seal kit for 2001-2004 Chevrolet Silverado 2500 HD or GMC Sierra 3500 rail service, SK67 provides the sealing components needed for that repair path.

What It Helps Fix

• Fuel seepage around injector sealing points
• Hard starting caused by injector seal leakage
• Diesel fuel odor from compromised injector seals
• Loss of rail sealing integrity during injector service
• Repeat repairs caused by worn O-rings and seals

Installation Notes and Tips

Verify engine and injector service requirements before installation. This kit does not include hardware, pintle caps, nozzle seals, or upper intake manifold gaskets. Clean all sealing surfaces thoroughly, inspect injector bores for damage, and replace any worn components found during disassembly. Confirm fitment by year, make, model, and service notes before ordering SK67.

Quality Assurance

Standard Ignition manufactures this kit in an ISO 9000-compliant inspection environment and builds it to OE-level specifications for service reliability. The design focus is on correcting common sealing issues encountered during original-equipment injector service.