Dieselr Aluminized Downpipe Back Exhaust Single | GM 2500/3500 6.6L DURAMAX LML 2011-2015
Dieselr Aluminized Downpipe Back Exhaust Single | GM 2500/3500 6.6L DURAMAX LML 2011-2015 - 4-inch Exhaust with Muffler is backordered and will ship as soon as it is back in stock.
Confirm vehicle fitment
Confirm vehicle fitment
Confirm fitment before ordering. Match the year, make, model, trim, engine, drivetrain and selected options shown on this page. If any detail is unclear, search your exact vehicle or contact us before checkout.
Shipping expectations
Shipping expectations
Availability and processing time can vary by manufacturer. Available shipping choices and charges appear at checkout. Tracking is emailed after shipment. Oversized, special-order and supplier-shipped items can require additional processing time.
Returns and cancellations
Returns and cancellations
Please review eligibility before purchase. Installed, used, electronic, custom, special-order and clearance items may have return restrictions. Contact us promptly if you need to change or cancel an order.
What’s included
What’s included
The product description and selected variant determine what is included. Items shown in lifestyle or installation photos are not included unless they are specifically listed in the description.
Dieselr Aluminized Downpipe Back Exhaust Single | GM 2500/3500 6.6L DURAMAX LML 2011-2015 - 4-inch Exhaust with Muffler is backordered and will ship as soon as it is back in stock.
Buy with confidence
Verify fitment, selected options, availability and included components before checkout. Secure payment options and order confirmation are provided at checkout.
Description
Description
The Dieselr Aluminized Downpipe Back Exhaust (2011–2015) is designed for serious diesel owners who want proven airflow gains and rugged dependability. Constructed from 4-inch, 5-inch heavy-gauge aluminized steel, this system provides a clean, unrestricted path from turbo outlet to tail section—improving exhaust velocity and lowering EGTs under heavy load.
Each Dieselr exhaust is mandrel-bent for precise geometry and TIG-welded for lasting strength. The aluminized coating resists corrosion, heat, and salt, ensuring long-term reliability in demanding conditions. Its OEM-style alignment and mounting points make installation simple, secure, and clean with no modifications required.
Built for performance and longevity, this system defines what Dieselr stands for—straightforward design, precision fitment, and real-world durability tested on working diesels.
Key Features
- 4",5" aluminized steel for maximum strength and corrosion protection
- Mandrel bends for smooth, consistent exhaust flow
- Factory-style hanger fitment for simple, secure installation
- Built to handle heat, load, and high-pressure applications
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Product features
Use this section to highlight specific product features to your customers.
Product comparison grid
Add content here to explain a bit about the range of products on offer and which ones may be most suitable for your customers.



