
Merchant Automotive 10902 Fuel System Contamination Kit (2011-2016 6.6L Duramax)
Fits: Chevrolet • GMC
Diesel Dollars is Southern Diesel Supply's Loyalty Program. Purchasing with Us Earns you 1 Point for every 1 Dollar spent to use for future buys!
By ordering the Merchant Automotive 10902 Fuel System Contamination Kit (2011-2016 6.6L Duramax) you will earn 4800 DIESEL DOLLARS in your SDS Fuel Tank!
Merchant Automotive 10902 is a complete fuel system contamination kit for GM trucks with the 2011-2016 6.6L LML Duramax. When a CP4 injection pump fails catastrophically, it sends metal debris through the whole fuel system, and this kit replaces the pump, rails, injectors, lines and filter head parts in one order.
Fitment
This kit is listed for the 6.6L LML Duramax in 2011-2016 GM trucks, the trucks that use the CP4 fuel injection pump. Other Duramax engines are not covered by this listing. Confirm your engine by VIN, or send it to us and we will check it before you order.
Why this part
Catastrophic failure of a CP4 fuel injection pump on a 2011-2016 LML does not stay inside the pump. It sends small metallic debris throughout the entire fuel system. A new pump alone does not correct that: to fix it properly, every affected fuel system component has to be replaced.
That is what kit 10902 is for. Instead of building the parts list one piece at a time, you get the components recommended for replacement after this type of failure in a single kit: a new CP4 pump, fuel rails, fuel injectors, fuel lines, a Master Filter Head Kit, and the gaskets and seals for the job. It is a comprehensive kit, which keeps the repair from stalling while you wait on the one part you forgot.
The kit also covers the low-pressure side. The Master Filter Head Kit includes filters, a filter head rebuild kit, a WIF plug, a bleeder screw and MA Additive, so the fuel filter assembly goes back together fresh along with the high-pressure parts.
What you get
Kit includes:
- New CP4 Pump
- Fuel rails
- Fuel injectors
- Fuel lines
- Master Filter Head Kit (Filters, filter head rebuild kit, WIF plug, bleeder screw, MA Additive)
- All Gaskets & Seals Needed For The Job
About Merchant Automotive
Merchant Automotive was founded in 2004 and is based in Holland, Michigan. The company focuses on the 6.6L Duramax and the Allison transmission, and its catalog leans on fixes for known problems on those trucks, from fuel filter head rebuild kits to transfer case pump upgrades. See the Merchant Automotive line and our full Duramax catalog.
Frequently asked questions
Can I just replace the CP4 pump after it fails?
Not after a catastrophic failure. The pump sends small metallic debris throughout the entire fuel system, and properly correcting it means replacing all of the affected components, not just the pump. Kit 10902 is built for exactly that job.
Does the kit include a new pump and injectors?
Yes. It includes a new CP4 pump, fuel rails, fuel injectors and fuel lines, plus the Master Filter Head Kit and all the gaskets and seals needed for the job.
Is this kit for my 2017 or newer Duramax?
No. It is listed for the 2011-2016 LML with the CP4 pump. If you are not sure which engine your truck has, send us the VIN.
Questions on fitment? Call the shop at the number in the header. We install everything we sell.

Diesel Dollars is Southern Diesel Supply's Loyalty Program. Purchasing with Us Earns you 1 Point for every 1 Dollar spent to use for future buys!
By ordering the Merchant Automotive 10902 Fuel System Contamination Kit (2011-2016 6.6L Duramax) you will earn 4800 DIESEL DOLLARS in your SDS Fuel Tank!


