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Seguler EGR & DPF Delete Kit Fit 2017-2023 6.6L Chevy GMC L5P Duramax
by SEGULER

Seguler EGR & DPF Delete Kit Fit 2017-2023 6.6L Chevy GMC L5P Duramax

SKU SG-ER-0025/ER-0330/ER-0213/DP-0295/DP-0287/ER-0239
$636.99 - $1,692.18
$1,002.98
$636.99 - $1,692.18
$1,002.98
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FITMENT

  • 2017–2023 Chevrolet Silverado & GMC Sierra 2500HD / 3500HD 6.6L Duramax L5P.

DESCRIPTION

Product Overview

  •  The 2017–2023 6.6L Duramax L5P is renowned for exceptional factory horsepower and heavy towing capability, but modern emissions complexity and factory thermal bottlenecks introduce long-term failure points. Factory closed CCV systems vent oily crankcase mist straight across the BorgWarner turbocharger blades and into the intercooler, degrading silicone charge boots; 
  • The complex EGR cooler loops circulate abrasive soot back into the intake manifold; restrictive stock downpipes and tight exhaust bends create high drive pressures; and complicated chassis-mounted emissions controllers threaten entire CAN-bus networks if simply disconnected without proper termination.
Key Features
  •  L5P Billet EGR Delete Kit: Isolates and removes the heavy, failure-prone EGR cooler assembly, eliminating soot contamination and internal coolant leak risks.
  • Crankcase Ventilation: Vents oily blow-by vapor safely to atmosphere, keeping the turbocharger compressor, intercooler, and charge-air piping dry and clean.
  • Underbody Sensor Harness Caps: Weatherproof dummy plugs that seal off open factory sensor connectors from moisture, road grime, and salt corrosion.
  • CAN-Bus Plugs: Integrated resistor dummy plugs that seal disconnected chassis emissions plugs while terminating CAN communication loops to stop dashboard communication errors and U-codes.
  • Race Pipes & Full Exhaust (4" & 5"): Choose between mid-pipe race pipes (retaining factory tailpipes) or full-flow downpipe-back exhaust systems to drop towing EGTs.

FAQ

Q: Why are the CAN-Bus Plugs divided into 2017–2019 and 2020–2023?

A: GM updated network wiring and architecture for 2020 with different pinouts, connectors, and termination resistance. Selecting your exact model year keeps the CAN-bus loop closed, preventing communication U-codes.

Q: What is the difference between the CAN-Bus Plug and the Harness Caps?

A: CAN-Bus Plugs contain internal resistors that keep data loops intact where emissions computers are unplugged. Harness Caps are dummy weather-seals that protect individual sensor terminals from moisture, dirt, and corrosion.

Q: What is the difference between a Race Pipe and a Full Exhaust system on an L5P?

A: The Race Pipe removes only the restrictive DPF/SCR canisters and connects directly into your factory tailpipe for a subtle, budget-friendly setup. The Full Exhaust replaces the entire system from behind the downpipe to the tailpipe with full 4" or 5" mandrel-bent stainless piping—maximizing velocity, cutting towing EGTs, and delivering an aggressive diesel roar.

Q: Why should I upgrade the Downpipe on an L5P?

A: The factory L5P downpipe features restrictive press bends near the firewall that trap extreme heat directly behind the turbo turbine wheel. An aftermarket mandrel-bent downpipe smooths airflow to drop EGTs.