Product Description
Fix CP4 fallout the right way. The INDUSTRIAL INJECTION 4G6101K GM Disaster Kit is the OEM-quality parts bundle you need after a CP4 failure on the 2011–2016 6.6L LML Duramax. It replaces all the contaminated hard parts and lines except the pump and injectors, so you can restore rail pressure and fuel integrity the right way. (See this item on CPP)
Fitment
- 2011–2016 Chevrolet Silverado / GMC Sierra 2500HD/3500HD — 6.6L Duramax LML
What’s Included
- OEM fuel line — pump (right side) to rail
- OEM fuel line — rail to rail (crossover)
- OEM fuel line — pump (left side) to rail
- OEM return line hose
- Fuel filter service kit
- Bosch OEM fuel rails
Note: Pump and injectors are not included in 4G6101K (kit only). Add a new CP4 or consider a CP3 conversion for reliability.
Recommended Parts (CPP internal links)
- Exergy Improved-Stock CP4.2 Pump (LML)
- Exergy 10mm “Stroker” CP4.2 Pump (LML)
- S&S LML CP3 Conversion Kit w/ Pump — No Tuning Req. (competition-use)
- S&S LML CP3 Conversion Kit w/ Pump — CARB Exempt
- Fleece CP3 Conversion Kit w/ Pump (LML)
- Shop LML Injectors & Nozzles — add new/flow-matched injectors after metal contamination
- Duramax Fuel Filtration — filters, heads, and accessories
- Fuel Injection Lines (Duramax) — individual lines & tools
- Fuel Rails & Related (Duramax)
Helpful Notes
- After a CP4 failure, replace all contaminated components and flush the system thoroughly before first start.
- Consider a CP3 conversion for improved reliability and debris mitigation going forward.
FAQ
Does this kit include a high-pressure pump or injectors?No. 4G6101K is the kit only (lines/rails/filter service/return hose). Add a CP4 replacement or convert to CP3 as needed.
Will it fit my 2015 LML?Yes. It fits all 2011–2016 LML 6.6L Duramax applications.
Why replace rails and lines after CP4 failure?Metal debris from a failed CP4 can lodge in rails and lines and quickly ruin a fresh pump/injectors if not replaced.
Should I choose a new CP4 or convert to CP3?A quality CP4 can restore stock operation; a CP3 conversion is popular for long-term reliability. See the recommended parts above.
