DPF & CAT Delete Pipe | GM/Chevy 6.6L Duramax LML 2011-2016

The DPF & CAT Delete Pipe for the 2011–2016 Chevy/GMC LML Duramax 6.6L removes the Diesel Particulate Filter (DPF) and Catalytic Converter (CAT) from your exhaust system, and it's the best-selling Duramax delete pipe we stock. Your factory muffler stays in place.

It's high-quality T-409 stainless steel, mandrel-bent for optimal exhaust flow, with OEM-style hangers and clamps for a factory-fit installation. Shipping is included in the price.

It's compatible with all 2011–2016 Silverado and Sierra Duramax pickup models across model years 2011, 2012, 2013, 2014, 2015, and 2016. It's designed for pickups and is not built to fit Cab & Chassis models, which would require modifications.

The 2015 model needs a closer look before you order, because there are two variants. Check your downpipe connection: a V-Band clamp at the downpipe means you have the 2015 early model, and a 3-Bolt Flange means you have the 2015.5 later model. They're not interchangeable, so match the variant to your truck. If you're unsure, call (888) 830-2588 Ext 2 before ordering.

You'll need a compatible delete tune to prevent check engine codes after install. Not sure how to install the pipe? We send a step-by-step instruction guide and have a full-time support staff to help with any questions, and you can open a support ticket on our website if you hit a snag.

We process orders within 1 business day. Standard shipping is included and takes 8–10 business days, while express takes 5–8 business days. All delete pipes are final sale, but a faulty or wrong product gets replaced.

For off-road/competition use only.