FITMENT
- 2011-2015.5 6.6L Silverado & Sierra Duramax 2500HD/3500HD LML engine with a V-Band Clamp.
- Does NOT Fit 2015.5-2016 models equipped with the 3-bolt flange. Please check underneath your truck!
- Please physically inspect underneath your truck to verify your turbo discharge style before purchasing!
DESCRIPTION
Product Overview
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Heavy exhaust backpressure, trapped heat, and thick intake sludge choke off the true power potential of 6.6L Duramax LML trucks. The factory exhaust setup acts like a bottleneck behind the turbocharger, while recirculated exhaust soot and crankcase oil vapors continuously coat the intake manifold in power-robbing carbon deposits.
- Reclaim total airflow efficiency with this 3-in-1 LML 5" Exhaust, EGR Delete & CCV Reroute Package. By expanding exhaust capacity to a massive 5" diameter and isolating dirty soot and oil mist from your intake air, this complete kit eliminates system bottlenecks, lowers towing EGTs, and keeps your entire intake tract clean and maintenance-free.
Key Features
- Fits the early-build LML cleanly with V-band clamp geometry matched to the factory downpipe connection.
- Exchanges the DPF canister for smooth 5" pipe that erases backpressure and puts an end to fuel-wasting regen cycles.
- Protects the intake from both soot and oil by deleting the EGR cooler and rerouting the CCV mist away from the turbo and intercooler.
- Cuts duplicate shop labor by tackling the exhaust, EGR, and CCV in a single teardown of the tight rear engine area.
FAQ
Q: What does the 5" downpipe-back exhaust get me?
A: The 5" setup replaces the restrictive factory components to free up flow, cut restriction, and lower heat under heavy-duty driving — with a noticeably deeper, more aggressive note.
Q: What’s the point of the CCV/PCV reroute?
A: It keeps oil vapor and crankcase contaminants from being drawn back into the intake, so the intake tract — along with the turbo and intercooler — stays cleaner over the long haul.
Q: Will this help when I’m towing?
A: Yes. By dropping exhaust restriction and improving airflow, it supports better flow during towing and heavy-load driving.
Q: How hard is the install?
A: It depends on the truck’s condition and your experience. Professional installation is the safer call, especially for pulling the factory emissions parts and the EGR cooler.
