The 2019-2020 Ram 6.7L Cummins came with a Bosch CP4.2 high-pressure pump. When a CP4.2 fails, it can fill the whole fuel system with metal debris. S&S’s fix swaps it for a Bosch CP3 and OE-grade parts, so the result looks like it came from the factory.
This No-Tune kit uses a new Bosch CP3NH pump that S&S modifies inside for durability and for rail pressure control that works without tuning. It is a reliability upgrade only and does not change power output.
2019-2020 Ram 6.7L Cummins owners who want to get rid of the CP4.2 and keep the truck emissions-legal and untuned.
| Part number | RAM-CP3-NOTUNE |
|---|---|
| Manufacturer | S&S Diesel Motorsport |
| Application | 2019-2020 Ram 6.7L Cummins |
| Pump | New Bosch CP3NH, S&S modified |
| Tuning | Not required |
| California | CARB EO D-756-5 (per S&S) |
Professional install available at Powertech Diesel, Idaho Falls — call 208-542-7793.
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