This kit will delete the entire emission system: DEF, EGR, DPF, and SCR. It will save you a lot of fuel, free you from endless emission headaches, and cut your repair costs for good. Strongest and most trusted tuning on the market. Built for hard work and serious results. Fits the most popular construction machines, including CAT 320, 336, 950M, 966M, D6T, D6N, John Deere 210G, 644K, 333G, 850K, 310SL, Komatsu PC210LC, PC360LC, D65PX, Bobcat T770, T870, Caterpillar 299D3, Case 580N, Volvo L90H, L120H, A40G, and John Deere 410E, 725C and more.