GDP
2017-2023 Duramax 3.5" Downpipe 6.6L L5P/L5D Chevy & GMC 2500/3500 HD
Fits your
Check fitment for your
$274.99
Description
Fits
| Year | Make | Engine |
| 2017-2023 | GM | L5P 6.6L Duramax |
Ready to elevate your L5P Duramax? Look no further than the enhanced 3.5" L5P Downpipe. Bid adieu to the restrictive stock L5P downpipe that's sending your EGTs through the roof and robbing your ride of its power.
Shipping
Free US shipping — no tariffs, no import fees.
Returns
Unused parts in original packaging may be returned within 30 days of delivery. Tuners married to a VIN need a factory unlock first — text a tech.
Goes with your build
Questions, answered
Can't find it here? Call or text +1 (888) 789-5551, 9–5 MST weekdays.
What parts do you offer?
We offer a wide range of high-quality diesel parts for various trucks, including full exhaust systems, tuners & tunes , and complete egr & def delete kits.
How do I place an order?
To place an order, simply add the desired items to your cart and proceed to checkout. Follow the prompts to enter your shipping and payment information.
Do you offer international shipping?
Yes, we offer international shipping world wide. Additional fees may apply, and delivery times may vary depending on the destination.
What is your return policy?
Due to the specialized nature of our products, we generally do not accept returns. Most items are VIN-specific or custom-built to order. Before returning any items, please contact us for specific shipping instructions.
How can I track my order?
Once your order is shipped, you will receive a tracking number via email. You can use this tracking number to monitor the progress of your delivery.