6.6L Duramax LLY LBZ LMM Downpipe | 2004.5-2010 Chevrolet GMC
SKU: 4383250613

6.6L Duramax LLY LBZ LMM Downpipe | 2004.5-2010 Chevrolet GMC

Sale price$99.00 Regular price$110.00
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

6.6L Duramax LLY LBZ LMM Downpipe | 2004.5-2010 Chevrolet GMCVehicle Fitment Years: 2004. Years: 2004. 5, 2005, 2006, 2007, 2008, 2009, 2010 Make: Chevrolet, GMC Model: Silverado 2500HD 3500HD, Sierra 2500HD 3500HD Engine: 6. 6L Duramax Turbo Diesel (LLY, LBZ, LMM) Body: Pickup Please Note: It will not fit Cab & Chassis trucks. Key Benefits 3" stainless steel piping for durability 20% improved exhaust flow for better performance Heat wrap included to lower engine bay temperatures Emissions friendly design for

Vehicle Fitment

Years: 2004.Years: 2004.5, 2005, 2006, 2007, 2008, 2009, 2010
Make: Chevrolet, GMC
Model: Silverado 2500HD / 3500HD, Sierra 2500HD / 3500HD
Engine: 6.6L Duramax Turbo Diesel (LLY, LBZ, LMM)
Body: Pickup

Please Note: It will not fit Cab & Chassis trucks.


Key Benefits 

  • 3" stainless steel piping for durability
  • 20% improved exhaust flow for better performance
  • Heat-wrap included to lower engine bay temperatures
  • Emissions-friendly design for hassle-free use
  • Ideal for competition applications or heavy-duty use

Features of 2004.5-2010 Duramax Downpipe

This downpipe offers a 20% improvement in exhaust flow over the factory pipe, providing you with a notable performance boost. Its stainless steel construction ensures durability, even under extreme conditions. The included heat-wrap helps retain heat within the exhaust system, reducing engine bay temperatures and keeping performance optimized. Additionally, the downpipe does not interfere with your emissions system, meaning you can enjoy the benefits without worrying about compliance.

Performance Improvement

By upgrading to this 3" inch turbo downpipe you will immediately notice an increase in exhaust flow out of the turbo. This smoother airflow helps reduce exhaust gas temperatures (EGTs), which allows your engine to operate more efficiently, especially during heavy towing or competitive use. The enhanced flow improves your vehicle's performance, giving it an edge in power output.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 4383250613

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.1 ★★★★★
Based on 714 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
A
Verified Purchase
Amazon Customer
Lowell, US
★★★★★ 5
Great product and value for money
Size: XX-Large, Color: Army Green
Value for money is great. Coat really absorbs cold. Just need to test if it water resistant. Laundry / cleaning of the product is also easy with instruction on the label.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2025
N
Verified Purchase
Natalia García
Lexington, US
★★★★★ 5
Igual a la foto
Era para mi pareja, y le quedó muy bien, tuve que pedir M, porque la L era muy grande.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 5, 2026
R
Verified Purchase
RODERIC CAREY
San Leandro, US
★★★★★ 1
To small
Not true too size. Too small
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 5, 2026
R
Verified Purchase
Reluc Amazon Customer
Charlottesville, US
★★★★★ 3
Strange fit - Returned quickly
MEDIUM: sleeves very tight for a man, shoulders roomy, waist TINY and hips even tighter
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 23, 2026
R
Verified Purchase
Rosemary Banks
Natrona Heights, US
★★★★★ 5
Great trench
Size: Medium, Color: Black
Bought this for my son and he absolutely loves it. Fits well and good quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 12, 2025

recommand products