2019-2023 Duramax 6.6L L5P Complete Package

2019–2023 Duramax L5P Complete Package

Choose your truck year, SPS exhaust and Peakside Performance tuning package. Fits Chevrolet Silverado and GMC Sierra 2500/3500 pickups with the 6.6L L5P Duramax.

Model Year

• 2019: matching 2017–2019 full exhaust, SPS 800011 cooler upgrade kit and L5P-ELC-A180 CAN bus plug kit.
• 2020–2023: matching 2020–2023 full exhaust, Dawgs/DIESELR 215-01008 EGR upgrade kit and L5P-ELC-A197 CAN bus plug kit. The same CAN kit covers all four years.

The SPS race-pipe choices cover both year groups. Full-exhaust part numbers, EGR hardware and CAN plugs follow the model year selected.

Exhaust Choices

Choose an SPS aluminized 4-inch race pipe, 4-inch downpipe-back or 5-inch downpipe-back exhaust, each available with or without a muffler.

Peakside / HP Tuners

Includes an RTD4 remote tuning device, Peakside single or SOTF tune files, and six universal ECM credits. SOTF uses the factory cruise-control buttons; a separate manual switch is not included.

No separate E41 unlock tool is included or priced into these 2019–2023 selections. Compatible E41 controllers can be upgraded through the OBD port with RTD4, the current HP Tuners software workflow and the included six ECM credits.

Peakside / EZ Lynk

Includes an EZ Lynk AutoAgent 3 and Peakside single-tune support with either four weeks of access or permanent support. These choices do not include SOTF. Peakside lists 2019–2023 support for locked ECMs; confirm the vehicle and installed controller before file fulfillment.

Order and Fitment Notes

Provide your 17-character VIN, model year, ECM part number, cab, bed, wheelbase and modifications before fulfillment. Cab/chassis and L5D trucks require a separate review. Transmission tuning, TCM hardware and TCM credits are not included. Product photos show example components; the parts supplied follow your selection.