Dorman 904-124HP Fuel Filter Primer Housing Seal Kit

Fuel Filter Primer Housing Seal Kit

Dorman 904-124HP is a fuel filter primer housing seal kit for select GM diesel applications that use a bleeder screw style primer housing. It addresses worn seals and replaces the original plastic bleeder screw with an upgraded brass bleeder screw for improved serviceability.

Key Features

• Fuel filter primer housing seal kit for select Chevrolet Silverado 2500 HD, Silverado 3500 HD, Silverado 3500, and GMC Sierra 2500 HD and Sierra 3500 applications
• Upgraded brass bleeder screw replaces the original plastic screw commonly found on affected GM primer housings
• Black gasket and O-ring seals help restore sealing at the primer housing
• High-performance service kit built for fuel filter primer housing repair
• Direct replacement application for vehicles listed in the fitment data

Detailed Description

This Dorman OE FIX kit is built for GM fuel filter primer housings where the bleeder screw can strip and the seals can wear out over time. The brass bleeder screw offers a stronger service point than the original plastic design, while the included rubber gaskets and O-ring seals help restore proper sealing at the housing. Dorman 904-124HP is a practical repair solution for Silverado 2500 HD, Silverado 3500 HD, Sierra 2500 HD, and Sierra 3500 models listed below.

This part cross-references GM OE part number 12642623 for the same application.

What It Helps Fix

• Stripped or damaged bleeder screw threads in the fuel filter primer housing
• Fuel seepage at the primer housing seals
• Air intrusion at the fuel filter primer housing
• Hard starting caused by poor primer housing sealing
• Service issues on GM fuel filter primer housings with a plastic bleeder screw

Installation Notes and Tips

Install on the primer housing specified by the vehicle fitment. Clean the sealing surfaces before assembly and inspect the housing for damage before replacing the seals and bleeder screw. Confirm the application matches the vehicle’s fuel filter primer housing style before installation. Fits 2001-2012 Chevrolet Silverado 2500 HD, N/A; Fits 2007-2012 Chevrolet Silverado 3500 HD, N/A; Fits 2001-2012 GMC Sierra 2500 HD, N/A; Fits 2007-2012 GMC Sierra 3500 HD, N/A; Fits 2007 Chevrolet Silverado 2500 HD Classic, N/A; Fits 2007 Chevrolet Silverado 3500 Classic, N/A; Fits 2007 GMC Sierra 2500 HD Classic, N/A; Fits 2007 GMC Sierra 3500 Classic, N/A; Fits 2001-2006 Chevrolet Silverado 3500, N/A; Fits 2001-2006 GMC Sierra 3500, N/A.

Quality Assurance

Dorman OE FIX parts are engineered to address known failure points in original components by updating the design where needed. This kit uses brass, carbon steel, and rubber materials to support fuel system sealing and serviceability in the listed GM applications.