H&S Motorsports 131001-1 Dual High Pressue Fuel Kit w/ CP3 | 2011-2016 GM 2500HD/3500HD 6.6L Duramax

Features:

• Includes brand new Bosch CP3 pump
• Supports fuel demands for 900+ horsepower
• Maintains rail pressure under extreme load
• Eliminates CP4 fuel volume limitations
• High-pressure and high-volume fuel delivery
• Ideal for tuned or competition-level trucks
• All brackets, lines, and fittings included
• Compatible with aftermarket lift pump systems
• Direct bolt-on installation with no tuning

CP3 Conversion Kit for GM 6.6L Duramax

If you're chasing serious power with your LML Duramax, there's a good chance you've already found the weak link in the system: the factory CP4 injection pump. Once you break past that 500 horsepower mark, rail pressure starts to drop off and the gains begin to taper. That’s where the H&S Motorsports Dual High Pressure Fuel Kit comes in. Designed specifically for 2011–2016 GM 2500HD and 3500HD trucks, this kit replaces your single pump setup with a dual-pump configuration that delivers the fuel volume your engine needs—without letting rail pressure fall behind. What really sets this kit apart is that it comes complete with a brand-new Bosch CP3 pump—not a reman, not a core-reliant option. This pump has a reputation for reliability, having powered both Cummins and Duramax platforms for years. When paired with the factory CP4, the system delivers high pressure and high volume—exactly what’s needed to feed a fuel-hungry, high-output build. Whether you're towing heavy, dialing in a street tune, or going all-in with competition-level power, this setup gives your truck the fuel support it needs to keep up.

Straightforward Install

If you ever outgrow what the included CP3 can provide, H&S made sure the system is upgrade-friendly. You can easily drop in one of their 10MM stroker pumps down the road without needing to change fittings or lines. Installation is straightforward and includes all the necessary brackets, fittings, and hardware to get you up and running without any fabrication. To get the most out of this setup—and to protect your investment—pairing it with a high-quality lift pump system like a FASS or AirDog is highly recommended. Clean, water-free fuel is key to long-term performance and reliability in any high-pressure system.

Fits: 2011, 2012, 2013, 2014, 2015, 2016 GM 2500HD/3500HD 6.6L Duramax

Application Notes:

• This product will NOT work with trucks that have dual alternators. The HS Motorsports CP3 pump is mounted where a dual alternator would be located.
• This product may not work with the EGR cooler installed. It may need to be removed.
• This product MUST be used in conjunction with custom tuning calibration. Failure to install the correct calibrations can result in engine damage.