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Description
6.6L Duramax L5P EGR Delete Kit | GMC/Chevy 2017-2025Introduction The GM Duramax L5P EGR & Cooler Delete Kit (20172025) removes the factory EGR valve and cooler to cut heat, soot, and failure points on 6. 6L L5P platforms. Expect lower EGTs, steadier coolant temps and cleaner airflow for off road performance. Custom tuning is required. Features Complete EGR and cooler removal for 20172025 L5P Duramax CNC fit aluminum and steel block off plates for leak free sealing Pre assembled coolant hoses for a
Introduction
The GM Duramax L5P – EGR & Cooler Delete Kit (2017–2025) removes the factory EGR valve and cooler to cut heat, soot, and failure points on 6.6L L5P platforms. Expect lower EGTs, steadier coolant temps and cleaner airflow for off-road performance. Custom tuning is required.
Features
- Complete EGR and cooler removal for 2017–2025 L5P Duramax
- CNC-fit aluminum and steel block-off plates for leak-free sealing
- Pre-assembled coolant hoses for a clean, fast install
- Full hardware and gasket set included
- Designed to reduce backpressure and lower exhaust gas temperatures
- For off-road/competition use; tuning mandatory
Benefits
- Power and response: Quicker turbo spool and stronger mid-range
- Towing confidence: Lower EGTs under sustained load
- Efficiency: Potential fuel economy gains with proper calibration
- Reliability: Fewer EGR-related clogs, leaks, and CELs
- Longevity: Less heat and soot stress across engine systems
Compatibility
- Years: 2017-2025
- Makes: Chevrolet Silverado, GMC Sierra
- Models: 2500, 3500, 4500, 5500
- Engine: 6.6L Duramax L5P (Diesel)
- Body: Pickup and Heavy Duty
Direct integration with L5P architecture; verify body style and accessory clearance before install
Technical Specifications
Kit includes:
- 3 × Coolant hoses with pre-installed fittings
- 1 × Aluminum block-off plate
- 2 × Steel block-off plates
- 4 × Grade 8.8 bolts
- 1 × Vacuum cap
- 2 × Hose clamps
- 3 × Exhaust gaskets
- 3 × Turbo gaskets
- 1 × Aluminum 9th-injector block-off plug
- 1 × Aluminum coolant-hose block-off plug
Materials: Aluminum and coated steel plates, silicone/formed coolant lines
Typical install time: 4–8 hours depending on tools and experience
Installation & Notes
Order of operations: Tune the vehicle first, confirm communications and no DTCs, then remove emissions parts and install the kit
Difficulty: Moderate; hand tools and coolant service required
Checks: Verify gasket seating, torque fasteners to spec, bleed cooling system, re-check after first heat cycle
Legal disclaimer: Off-road/competition use only. Not legal for highway use. Confirm local, state, and federal regulations
Shipping: Review shipping instructions and lead times before purchase
Frequently Asked Questions
Q: Do I need custom tuning?
Yes. A calibration is required to disable EGR-related codes and optimize fueling/boost.
Q: Will this fit my 2020 Sierra 3500?
Yes, the kit covers 2017–2025 L5P 2500/3500/4500/5500. Verify space and accessory routing.
Q: What gains should I expect?
Lower EGTs, quicker spool, and smoother mid-range when paired with proper tuning.
Q: Can I install this at home?
Many owners do. Professional installation is recommended if you’re new to coolant or turbo hardware.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy