— // SUPPORT
Every exhaust, EGR kit, and tuner is confirmed to fit your exact truck — Powerstroke, Cummins, or Duramax — or we make it right. No guesswork, no wrong boxes.
Ordering diesel performance parts shouldn't feel like a gamble. If you use our fitment tools to match a part to your truck and it doesn't fit as described, we make it right — we'll exchange it for the correct part and cover the return shipping. That's the guarantee, in plain English.
Every product at Tuned Diesel Performance is tagged to the exact platforms it fits. Enter your year, make, model, and engine in our vehicle fitment finder, or jump straight to your platform page — 6.7L Powerstroke, 6.7L Cummins, L5P Duramax, and more — to see only the parts confirmed to bolt on to your truck. Every product page lists the exact year range, cab, and bed configurations it covers.
Diesel exhaust and emissions parts change across model years, engine revisions, and cab/bed combinations. A part that fits a 2017 crew cab short bed may not fit a 2019 mega cab. That's exactly why we built dedicated year-make-model-engine filtering instead of generic search — so a turbo-back exhaust or EGR delete kit you add to your cart is the one engineered for your truck.
If your setup is unusual — a swapped engine, an aftermarket turbo, a non-standard configuration — talk to a Tuned Rep before you order. We run these trucks ourselves and we'll spec the right exhaust, tune, and supporting parts for your exact build. A two-minute call to 888-322-4233 beats a wrong box every time.
// HOW WE MAKE IT RIGHT
If a part matched through our fitment tools doesn't fit as described, contact us within 30 days of delivery with your order number. We'll arrange the exchange and get the correct part to you — even on final-sale items, because the mismatch was on our data, not you. See Returns & Warranty for full terms.
The fitment guarantee applies to parts matched using our vehicle fitment tools and confirmed against the fitment data listed on each product page. It does not cover modified vehicles with non-factory configurations unless fitment was confirmed with our team in advance, or fitment issues resulting from prior modifications. See Returns & Warranty for complete terms.