4"/5" Downpipe-Back Exhaust 2011-2015 LML 6.6 Duramax DPF Delete Race Pipe | SPELAB Style:4'' Dp-Back（Free Exhaust Tips） Q: What if I need

Q: What if I need a physical replacement TCM

6L Duramax L5P DP-Back must be used together with our downpipe

DPF Delete Kits

SPELAB’s 6061 aircraft-grade aluminum coolant reservoir is TIG-welded and pressure-tested to deliver unmatched durability and leak resistance

Note: Does not fit 2WD models

4"/5" Downpipe-Back Exhaust 2011-2015 LML 6.6 Duramax DPF Delete Race Pipe | SPELAB Style:4'' Dp-Back（Free Exhaust Tips） Q: What if I needtab Description Unlock your 2011 2015 LML Cummins's true potential with this high performance DPF delete pipe. Our precision engineered solution eliminates restrictive factory filters, dramatically reducing exhaust gas temperatures (EGTs) while improving turbo spool up and throttle response. The mandrel bent construction ensures maximum flow efficiency, helping your diesel breathe easier. Perfect for off road enthusiasts seeking better power delivery