Does this kit fit the refreshed 2024 and 2025 Silverado/Sierra 2500 HD?

Yes. While the interior and exterior of the trucks were refreshed, the 6.6L L5P Duramax engine architecture remains compatible. This kit provides the necessary block-off plates and coolant bypass hardware for all L5P models from 2017 through the current 2025 production year.

Why does the L5P kit include reinforced silicone hoses instead of just plates?

The L5P cooling system is integrated directly with the EGR cooler. Simply blocking the exhaust isn't enough; you must safely bypass the coolant flow to prevent air pockets or overheating. Our high-temp reinforced silicone hoses ensure a pressurized, leak-free circuit that outperforms factory rubber.

Can I install this 2020 L5P EGR delete kit without an ECM unlock?

No. Starting in 2017, GM implemented high-level encryption on the L5P ECM. To use any l5p egr delete kit, the ECM must first be sent to a specialist (like HP Tuners) to be "unlocked." Once unlocked, you can then use a tuner to flash the software required to support the hardware delete.

Will this kit help prevent the "Engine Power is Reduced" (Limp Mode) message?

If your Limp Mode is being triggered by a clogged EGR valve, a cracked EGR cooler, or carbon-related sensor errors, this kit—combined with proper tuning—will permanently resolve those issues by removing the failure-prone components entirely.

Is it necessary to remove the entire EGR cooler, or can I just use the block-off plates?

While some "stealth" kits only use plates, a full delete (removing the cooler) is highly recommended for the L5P. Removing the bulky cooler assembly improves airflow to the rear of the engine, reduces weight, and eliminates the risk of the cooler leaking internally and hydrolocking the engine.

2017-2025 GMC/Chevy 6.6L Duramax L5P EGR Valve & Cooler Delete Kit for Silverado/Sierra 2500/3500 HD

Name: 2017-2025 GMC/Chevy 6.6L Duramax L5P EGR Valve & Cooler Delete Kit for Silverado/Sierra 2500/3500 HD
Brand: Vigor Diesel
SKU: 5558EGR011MUS
Price: 164.77 USD
Availability: InStock

Product Specifications

Brand

Vigor Diesel

Type

6.6L EGR Valve & Cooler Delete Kit

AKA

Exhaust Gas Recirculation Delete Kit, EGR Block Off Plate & Coolant Bypass

Engine

6.6L V8 L5P Duramax Diesel

Fitment

2017-2025 GMC Sierra / Chevy Silverado 2500HD / 3500 HD

Body Type

Pickup (not fit Cab & Chassis)

Material

6061 Billet Aluminum, Stainless Steel, Reinforced Silicone

Technique

CNC Machined, Anodized

Condition

100% Brand New

Color

Black

Highlights

Engineered for L5P Reliability: Specifically designed to fit the 2017-2025 6.6L Duramax, including the popular 2019 l5p egr delete kit and 2020 l5p egr delete kit applications.

Complete Soot Elimination: Blocks 100% of abrasive exhaust particulates from re-entering the intake tract, preventing the "sludge" buildup that often leads to sensor failure and reduced fuel economy.

Leak-Proof Coolant Bypass: Features high-temp reinforced silicone hoses and precision-machined plates to bypass the failure-prone factory EGR cooler, a common source of coolant loss in L5P engines.

Enhanced Thermal Management: By removing the EGR system, your engine breathes only fresh, cool oxygen, resulting in lower Exhaust Gas Temperatures (EGTs) and improved turbo longevity.

Precision CNC Construction: All block-off plates are CNC machined from high-grade aluminum/steel for a perfect, factory-like seal on your Chevy Silverado or GMC Sierra 2500/3500 HD.

Streamlined Engine Bay: Removes bulky, heavy factory emissions hardware, clearing up space for easier maintenance and a cleaner, performance-oriented under-hood appearance.

Product Description

Vigor Diesel 6.6L Duramax L5P EGR & Cooler Delete Kit (2017-2025)

The 6.6L L5P is a powerhouse, but it is vulnerable to EGR-related soot buildup and cooler failures. Whether you are searching for a 2019 l5p egr delete kit or a 2020 l5p egr delete kit,Vigor Diesel provides a permanent egr delete kit solution. This kit is a essential part of our Duramax EGR delete kit lineup, keeping your engine running cleaner and cooler.

L5P Performance Benchmark: Stock vs. Vigor Delete

Variable	OEM Factory Setup	Vigor L5P Delete Kit
Intake Integrity	Heavy Soot / Carbon Sludge	Pristine / Fresh Air Flow
Coolant Safety	Cooler Cracking Risk	Permanent Fail-Safe Bypass
Engine Bay Access	Crowded / Obstructed	Open / Accessible Design

Kit Components

Our premium egr delete kit features everything required for the L5P platform:

Multi-Layer Reinforced Hoses
CNC Machined Block-Off Plates
EGR Exhaust Gasket
EGR Intake Gasket
Machined Brass Coolant Adapter
Support Brackets & Fasteners
Hose Clamps & Hardware

FAQs

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