DPF & EGR Delete 2017-2022
EGR Cooler Delete Kit for 2017 - 2022 6.6L Duramax L5P Vehicles
Installed 4" DPF & EGR Delete Kit on 2017 - 2022 6.6L Duramax L5P Truck
Components of 4" DPF Delete Pipe & EGR Kit for 6.6L Duramax L5P
4" DPF & EGR Delete Kit for Duramax L5P - Boost Power & Efficiency
DPF & EGR Delete 2017-2022
EGR Cooler Delete Kit for 2017 - 2022 6.6L Duramax L5P Vehicles
Installed 4" DPF & EGR Delete Kit on 2017 - 2022 6.6L Duramax L5P Truck
Components of 4" DPF Delete Pipe & EGR Kit for 6.6L Duramax L5P
4" DPF & EGR Delete Kit for Duramax L5P - Boost Power & Efficiency

L5P Delete Kit 4" DPF Pipe EGR Cooler Delete 2017-2022 Chevy Silverado 2500 3500

$369.60
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Details

L5P Delete Kit Product Overview

The L5P delete kit pairs a 4-inch T-409 stainless DPF delete pipe with a 3.5-inch downpipe and a complete EGR cooler delete kit for 2017-2022 Chevrolet Silverado 2500 3500 HD and GMC Sierra 2500 3500 HD pickups. One purchase removes the two biggest reliability complaints owners have with the 6.6L Duramax L5P, and it anchors our L5P performance upgrades lineup for these trucks.

Legal Note

For competition and closed-course off-road use only. Removing or altering emissions control devices may violate federal and state law, so check your local regulations before ordering.

6.6L Duramax L5P Delete Kit Compatibility

Brand Model Year Engine
Chevrolet / GMC Silverado 2500 3500 HD, Sierra 2500 3500 HD 2017-2022 6.6L V8 Duramax L5P Turbo Diesel

What Differs Between 2017-2019 and 2020-2022 L5P Trucks

GM redesigned the Heavy Duty platform for 2020, but the delete hardware stays the same across both body generations. The delete tune absorbs the calibration differences.

Generation Stock Output Key Changes
2017-2019 445 hp / 910 lb-ft L5P debut on the previous-generation HD platform
2020-2022 445 hp / 910 lb-ft All-new Silverado 2500HD, 3500HD, and Sierra HD platform

Shop 2017-2022 L5P Delete Kit Now!
Shipping Details

Ontario CA / Springdale OH / Newark NJ:

  • 6.6L Duramax L5P EGR Cooler Delete Kit

Houston TX:

  • 6.6L Duramax L5P DPF Delete Kit
Package List
Delivery Time

2-5 working days inland in the United States
Attention
Legal Disclaimer EGR DPF Delete Offroad Use Only

LEGAL DISCLAIMER

This product may NEVER be installed on a vehicle registered for highway or public street use. By installing this product onto your vehicle, you assume all risk and liability associated with its use. It is your responsibility to make sure your vehicle complies with all federal, state, and local emissions laws.

Federal and many state and local laws prohibit the removal, modification or rendering inoperative of any part of the design affecting emissions or safety on motor vehicles used on a public street or highway. Violation may result in a fine of up to $32,500 per vehicle (or possibly higher depending on changes in the law). All civil penalties and fines for removing your vehicle's emissions equipment are the sole responsibility of the end user.

No other applications besides off-road competition racing use are intended or implied. Depending on where you live, additional restrictions may apply. Check all applicable laws before installing or using.

Not available for sale or use in the state of California, Colorado and Arizona.

Product details

Core Advantages of the L5P Delete Kit

On a stock L5P, the DPF fills with soot and forces constant regeneration cycles that burn diesel in the exhaust instead of in the cylinders. Let it go long enough, and the truck derates into limp mode when you need power most. The EGR cooler recirculates hot, sooty exhaust gas back toward the intake and is a known weak point on these engines, contributing to carbon buildup and coolant-side failures.

This kit handles both problems in one afternoon. The 4" delete pipe replaces the clogging filter with straight-through T-409 stainless, and the 3.5" downpipe keeps spent gases moving with minimal restriction. The EGR cooler delete kit takes the cooler out of the circuit entirely. Together, they free up exhaust flow for more powerful tune flashes and a cooler-running engine.

A delete-capable tuner is required with this hardware. The tune shuts off the DPF, EGR, and DEF strategies in the ECM so the truck runs clean and never drops into another regen or derate cycle.

Free-Flowing 4-Inch Exhaust with Tune Headroom

The T-409 stainless delete pipe and 3.5" downpipe remove the DPF and its restriction, letting more air and fuel move through the combustion chamber instead of stacking up against a clogging filter. With a matched delete tune, owners commonly report gains of 90-160+ hp and 180-300+ lb-ft of torque over stock, with exact numbers varying by tune and supporting mods. The freer exhaust also drops EGTs for safer towing under load.

EGR Cooler Delete Ends the Soot Loop

The EGR cooler delete kit takes a known weak point out of the engine. No more hot, sooty exhaust gas recirculating toward the intake, no more carbon stacking on the intake side, and no more coolant-side cooler failures to worry about. Optimized exhaust flow also helps combustion chamber temperatures stay in a healthier range.

No More Regens, No More Limp Mode

With the DPF gone, forced regeneration cycles stop burning diesel in the exhaust and the derate and limp-mode events that come with a saturated filter disappear. Most owners report 1 to 3 mpg back once regens stop, and the engine spends its fuel moving the truck instead of cleaning a filter.

T-409 Stainless and Quality Components

The delete pipe is built from T-409 stainless steel for corrosion resistance and long service life, with aluminum alloy components where weight matters and silica gel heat insulation where temperatures climb. Every clamp, hanger and fastener needed for the swap ships in the box.

Ideal For: Who Needs an L5P Duramax Delete Kit

  • 2017-2022 Silverado and Sierra HD owners: from a 2020 Chevy Duramax delete kit build to a 2021 Chevy Duramax delete kit daily driver, one box covers both body generations.
  • Towing and hauling drivers: lower EGTs for safer towing, and no regen cycles interrupting a loaded pull up a grade.
  • Off-road and competition trucks: closed-course rigs where emissions hardware is dead weight and a clogging risk.
  • Cost-conscious owners: anyone done paying for DPF cleanings, EGR cooler repairs and the diesel burned during constant regens.

L5P Delete Kit Technical Specifications

  • Specification: Detail
  • Pipe Diameter: 4-inch DPF delete pipe
  • Downpipe Diameter: 3.5 inch
  • Pipe Material: T-409 stainless steel
  • Other Materials: Aluminum alloy, silica gel
  • Engine: 6.6L V8 Duramax L5P turbo diesel
  • Vehicle Fitment: 2017-2022 Chevy Silverado 2500 3500 HD, GMC Sierra 2500 3500 HD pickups (not Cab & Chassis)
  • Brand: EGR Performance
  • Warranty: 1 year

Fitment Boundaries: Read Before You Order

This kit fits 2017-2022 Silverado and Sierra 2500 3500 HD pickup trucks. It does not fit Cab & Chassis commercial chassis trucks, so fleet and commercial buyers need to confirm their configuration first. The kit also covers 2017-2022 trucks only; 2023 and newer L5P trucks use different hardware, and those owners should shop the current-generation L5P collection instead.

Why Choose This EGR Performance L5P Delete Kit

EGR Performance builds delete and performance hardware for the 6.6L Duramax L5P platform, and this kit is packaged to cover every 2017-2022 Silverado and Sierra HD pickup from a single part number. Installation runs about an hour with basic hand tools, cutting only where shorter wheelbase configurations require it, and all clamps, hangers, and hardware ship in the box.

Every kit carries free shipping, a 45-day free return window, and a 1-year warranty against manufacturing defects. If a question comes up before or during the install, the support team answers at service@egrperformance.com.

L5P Delete Kit Package Contents

  • 1 x DPF delete kit with the 4" T-409 stainless delete pipe and 3.5" downpipe
  • 1 x EGR cooler delete kit
  • Clamps, hangers, and installation hardware (some factory hardware is reused)

Fit Your Vehicle with 6.6L Duramax L5P

Check your truck against the list below before ordering. This kit covers both body generations of the 6.6L V8 Duramax L5P turbo diesel in 2500HD and 3500HD pickup form, 2017 through 2022.

  • 2017-2019 Chevrolet Silverado 2500HD and 3500HD with the 6.6L Duramax L5P
  • 2020-2022 Chevrolet Silverado 2500HD and 3500HD with the 6.6L Duramax L5P
  • 2017-2019 GMC Sierra 2500HD and 3500HD with the 6.6L Duramax L5P
  • 2020-2022 GMC Sierra 2500HD and 3500HD with the 6.6L Duramax L5P

Upgrade Your L5P Duramax Performance

A full delete kit for the L5P Duramax changes how the truck works. Regeneration cycles stop burning diesel in the exhaust, the EGR cooler comes out of the coolant and intake loop, and the free-flowing 4-inch exhaust lets a matched tune make real power instead of working against backpressure.

The hardware in the box is identical whether you are building a 2020 L5P delete kit tow rig or ordering for a 2022 L5P delete kit daily driver. Both body generations use the same T-409 stainless pipe, downpipe and EGR cooler delete components, and the tune file matches your exact model year.

Keep the usage rules straight: this hardware is built for competition and closed-course off-road applications. Run it accordingly.

Recommended L5P Duramax Performance Upgrades

  1. L5P EGR DPF Delete Instructions: start with our L5P EGR DPF delete instructions walkthrough so you know every step and torque check before the truck comes apart.
  2. L5P Downpipe Upgrade: an L5P downpipe upgrade keeps the exhaust flowing after the delete pipe, from bolt-in pipes to full systems.
  3. L5P CCV Reroute Kit: an L5P CCV reroute kit routes crankcase vapors out of the intake so the clean side stays clean after the delete.
  4. L5P Tuner Harness Plug: an L5P tuner harness plug kit keeps the factory connections seated and code-free once the emissions hardware comes out.
  5. 6.6L Duramax L5P Parts: browse the full L5P performance upgrades collection for everything else these trucks take, from intakes to supporting hardware.

All EGR Performance products offer a 1-year warranty and a 45-day free return. Shop performance bundles and save today!

  1. Dispatch Time: Orders will be shipped within 24 hours after successful payment.
  2. Delivery Time: 2-5 business days after dispatch (delivery speed depends on proximity to warehouse location).
  3. Return Window:7 days for unsatisfactory items45 days for quality-related issues
  4. Refund Processing: Refunds will be processed back to your original payment method within 2-4 business days after receiving the automated refund confirmation email (subject to bank verification).

FAQs about the L5P Delete Kit

What is included in this L5P delete kit?

The kit includes a DPF delete kit built around a 4-inch T-409 stainless delete pipe with a 3.5-inch downpipe, a complete EGR cooler delete kit, and the clamps, hangers and hardware for the swap. It fits 2017-2022 Chevrolet Silverado 2500 3500 HD and GMC Sierra 2500 3500 HD pickups. A delete-capable tuner is required and sold separately.

Will this L5P delete kit fit my 2024 Duramax?

It will not. This kit covers 2017-2022 trucks, and 2023 and newer L5P trucks use different hardware. Owners of current-generation trucks should browse the 6.6L Duramax L5P performance upgrades collection for parts matched to those model years.

Do I need a delete tune with this kit?

A delete-capable tuner is required. The ECM will flag the missing DPF and EGR hardware and force the truck into limp mode without a tune that shuts those strategies off, along with DEF dosing. Load a tune file matched to your exact model year before the truck goes back into service.

How much horsepower will a deleted L5P make?

With a matched delete tune, owners commonly report gains of 90-160+ hp and 180-300+ lb-ft of torque over the 445 hp / 910 lb-ft stock rating. Exact numbers depend on the tune file, fuel system health and supporting mods. The free-flowing exhaust also lowers EGTs, which matters most when towing heavy.

Will deleting hurt my L5P engine or turbo?

Not when the truck is tuned and monitored correctly. The hardware itself removes failure-prone components like the EGR cooler; the real risk comes from sloppy fuel tuning and ignoring pyrometer readings. A proper tune, clean fuel filtration and EGT monitoring keep a deleted L5P reliable for the long haul.

Does this kit handle DEF delete for a 2021 Duramax?

The physical hardware deletes the DPF and the EGR cooler. DEF is handled in the tune: the delete file disables DEF dosing and clears the associated warnings and countdowns. No extra physical parts are needed for DEF beyond this kit and the tuner.

Will this kit fit my 2020 GMC 2500?

It fits. The kit covers the redesigned 2020-2022 Sierra 2500HD and 3500HD pickups alongside the 2017-2019 trucks. Confirm your truck is a pickup rather than a Cab & Chassis configuration before ordering, since commercial chassis trucks are excluded.

Is this L5P delete kit legal on public roads?

For competition and closed-course off-road use only. Removing emissions control devices from a pollution-controlled vehicle violates federal law and most state regulations, and it can void the factory warranty. Verify the rules in your area before ordering.

How hard is the installation?

Plan on about one hour with basic hand tools working on the ground, or faster on a lift. Cutting may be required for shorter wheelbase bed and cab configurations, so keep a hacksaw handy. No printed instructions ship in the box, but the official PDF delete pipe guide downloads free, and professional installation is advised if exhaust work is outside your comfort zone.

What warranty and returns does EGR Performance offer on this kit?

Every kit carries a 1-year warranty against manufacturing defects, a 45-day free return window, and free shipping. If a component arrives damaged or a fitment question comes up, the support team at service@egrperformance.com resolves it quickly.

L5P DPF EGR Cooler Delete Kit Installation Guide

Plan on about one hour with basic hand tools, working on the ground in a driveway or garage; an automotive-style lift speeds the job up. No printed instructions ship in the box, but the official PDF guide below downloads free, and professional mechanical service is advised for anyone not comfortable with exhaust and emissions work. Our technicians answer questions at service@egrperformance.com.

  1. Stage heavy-duty exhaust band clamps, penetrating fluid and standard socket extensions before you start, and soak the factory exhaust fasteners the night before.
  2. Let the exhaust cool completely, lift the truck safely, then lower the factory DPF section out of the system.
  3. Swap in the 4" DPF delete pipe and 3.5" downpipe, align the hangers, and seat the band clamps evenly across the joints.
  4. Install the EGR cooler delete kit, making sure each plug seats fully and locks into place; a loose plug causes connectivity issues and can damage the plugs or the vehicle's electrical system.
  5. Torque every clamp, then recheck clamp torque after the first test-drive heat cycle to prevent joint slippage.
  6. Load a matching L5P delete tune before the truck goes back to work.

Note that cutting may be required to fit shorter wheelbase bed and cab configurations. All necessary clamps, hangers and hardware are included, and some factory hardware gets re-used during the swap.

Avoid exhaust leaks and get proper backpressure reduction by downloading the official 2017-2022 Duramax L5P 4" DPF Delete Pipe Guide (PDF).

To learn how to install EGR Performance products across various truck generations, explore our central resource page.

Important: Professional mechanical service is advised. Designed solely for closed-course off-road competition.