Restore your Duramax fuel system to factory performance with the OEM GM 19420326 Fuel Pump Kit, a complete replacement solution engineered specifically for 2011–2016 6.6L Duramax LML diesel trucks. This genuine GM kit is designed to address fuel system failures, contamination issues, and CP4 pump failures with a full OEM replacement package.
Built and validated by General Motors, this kit ensures precise fitment, long-term reliability, and OE-level performance, making it the go-to solution for professional repairs and complete system overhauls.
Why Choose OEM GM 19420326 Over Aftermarket Kits
- Exact OEM calibration and tolerances
- Proven durability under diesel high-pressure systems
- Eliminates compatibility issues common with aftermarket kits
- Maintains factory drivability, emissions, and fuel efficiency
- Designed specifically for Duramax CP4 system repair
When Do You Need This Kit?
This kit is commonly required when:
- CP4 pump failure occurs
- Fuel system contamination (metal shavings in fuel)
- Injector failure caused by debris
- Low fuel rail pressure or hard-start conditions
- Complete system overhaul is recommended
What’s Included in the Kit
This is a complete Duramax LML fuel contamination repair kit, typically including:
- CP4 High Pressure Fuel Pump
- Fuel Rails (Left & Right)
- OEM Bosch Fuel Injectors (Set of 8)
- Associated high-pressure fuel system components
Designed to replace all major fuel system components affected by contamination or failure.
The GM 19420326 Fuel Pump Kit is the ultimate OEM solution for repairing or replacing a failed Duramax LML fuel system. With all critical components included and engineered to factory specifications, this kit delivers unmatched reliability, performance, and peace of mind for serious diesel repairs
