FITMENT
- 2017-2019 6.6L Silverado & Sierra Duramax L5P 2500HD 3500HD Diesel engine trucks.
- Note: Will NOT fit Cab & Chassis commercial-style trucks.
DESCRIPTION
Product Overview
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Bottlenecked exhaust flow and ongoing intake contamination severely limit the power, responsiveness, and service life of L5P Duramax trucks. Crushed factory downpipes and heavy DPF assemblies trap intense exhaust heat near the turbo, while the stock EGR cooler dumps abrasive carbon residue straight into the intake manifold, risking internal coolant leaks and severe carbon buildup. Additionally, disconnected sensor connectors remain exposed to mud and moisture after removing factory emissions hardware.
- This complete L5P Performance & Protection Package resolves all major OEM limitations in one streamlined kit. Combining a free-flowing turbo downpipe, precision EGR block-off hardware, and heavy-duty plug-and-play harness caps, it restores instant throttle feel, stops intake sludge formation, and keeps your truck’s electrical connections clean and reliable.
Key Features
- Drops backpressure right off the turbine housing so the VGT turbocharger winds up noticeably quicker.
- Pulls the factory EGR cooler to halt abrasive soot from clogging intake valves and banish the threat of internal coolant loss.
- Bundles specialized connector plugs that seal every disconnected sensor harness, locking moisture, dust, and corrosion out of the wiring.
- Swaps the restrictive exhaust canisters and downpipe crimps to kill fuel-wasting regenerations and send EGTs tumbling.
FAQ
Q: Why pick a 5" exhaust system over a 4" exhaust?
A: A 5" exhaust delivers maximum airflow capacity and a deeper diesel exhaust tone, making it ideal for a larger, performance-oriented exhaust upgrade. A 4" system provides a more balanced setup for daily driving and towing.
Q: What advantage does pairing the 5" exhaust with the 3.5" downpipe offer?
A: The 3.5" downpipe improves exhaust flow directly after the turbocharger, while the 5" exhaust system reduces restriction throughout the rest of the exhaust path. Combined, they deliver a complete high-flow exhaust solution.
Q: How does this kit differ from a downpipe-only upgrade?
A: A downpipe-only upgrade improves airflow directly after the turbocharger. This complete kit also upgrades the full exhaust path, tackles EGR contamination, and includes CAN-BUS components for a more complete installation.
Q: Why does the L5P platform require CAN-BUS plugs?
A: The L5P platform depends on electronic communication between multiple vehicle modules. The included CAN-BUS components seal the disconnected factory sensor harnesses against moisture, dust, and corrosion, keeping the electrical system protected after installation.
