Cummins DEF Delete Kits in This Collection
DEF rarely gets addressed alone on these trucks, so these are full packages that cover DEF, DPF, and EGR together with a Mini Maxx Tuner V2.
Which Ram Trucks Use DEF
DEF arrived on the 6.7L Cummins with the 2013 model year, so trucks from 2007.5 through 2012 have no DEF system and do not need anything on this page. From 2013 the system runs a tank, heater, pump, and quality sensor, and the components differ between the 2013-2017 trucks and 2018 and later trucks. Because the DEF, DPF, and EGR systems work together on these engines, addressing one without the others usually leads back to the same warnings, which is why these kits are bundled. Within your year group, choose your pipe diameter and whether you want a muffler. Cab and Chassis 4500 and 5500 trucks route exhaust differently than pickups.
Why Cummins Owners Choose EngineGo
DEF hardware is expensive to guess at. Every listing here names the supported years, lists what arrives in the box, and states what tuning is included. Orders ship from U.S. warehouses with most processing the same or next business day excluding Sundays, and free shipping applies within the continental United States. Authorized returns are accepted within 45 calendar days on qualifying items, with stricter terms on electrical and tuner products. If your truck is a crossover year, sits on a chassis cab, or already has partial emissions work done, send your year, model, cab style, and current setup and we will confirm the right package first.
Shop Cummins DEF Delete Kits
Confirm your truck is 2013 or newer, then pick your year group and exhaust layout. These are complete packages rather than DEF-only parts, so you handle the connected systems in one order instead of coming back for the next warning light. Send your truck details before checkout if anything about your configuration is unusual.
Important: These products are intended for off-road, race, or non-public-road use where permitted. Confirm federal, state, and local laws before purchase and installation. Customers are responsible for legal compliance.