Dieselr Aluminized Downpipe Back Exhaust Single | GM 2500/3500 6.6L DURAMAX L5P 2017-2019
Dieselr Aluminized Downpipe Back Exhaust Single | GM 2500/3500 6.6L DURAMAX L5P 2017-2019 - 4-inch Exhaust with Muffler is backordered and will ship as soon as it is back in stock.
Shipping & delivery
Usually ships in 2–3 business days unless a different lead time is shown on this page. Shipping cost is calculated at checkout (UPS or USPS to the contiguous U.S.).
Shipping policy · Returns · Fitment questions? (561) 207-7988
Delivery and Shipping
Delivery and Shipping
Standard order processing is 2–3 business days unless this product or your order confirmation states a different lead time. Custom-built, made-to-order, backorder, and pre-order items follow their stated lead times.
Enclosures and subwoofer boxes ship for $50 per unit. Other shipping charges are calculated at checkout. Orders outside the contiguous 48 United States may require additional shipping; we will contact you for approval before shipment.
Subwoofer boxes ship UPS Ground where available. Read our Shipping Policy and Return and Refund Policy for delivery, product-specific return windows, and warranty details.
Dieselr Aluminized Downpipe Back Exhaust Single | GM 2500/3500 6.6...
Dieselr Aluminized Downpipe Back Exhaust Single | GM 2500/3500 6.6L DURAMAX L5P 2017-2019 - 4-inch Exhaust with Muffler is backordered and will ship as soon as it is back in stock.
Description
Description
The Dieselr Aluminized Downpipe Back Exhaust (2017–2019) delivers the ideal balance of flow efficiency, fitment precision, and long-term durability. Crafted from 4-inch, 5-inch heavy-gauge aluminized steel, this system provides a direct, unrestricted exhaust path that supports cooler running temps and consistent performance.
Each Dieselr system is mandrel-bent for smooth, uninterrupted airflow and precision-welded for a secure, leak-free design. The aluminized finish offers reliable corrosion resistance, even under exposure to road salt, mud, and moisture. Installation is straightforward, with factory-style hangers and clamping points that ensure a professional, rattle-free fit.
Designed to handle demanding applications and extended use, Dieselr aluminized systems define performance through real-world engineering—built tough, built right, and built to last.
Key Features
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4",5" aluminized steel construction for maximum strength
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Mandrel-bent tubing for smooth, consistent flow
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Factory-style alignment for clean installation
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Corrosion-resistant coating for extended durability
Fitment & installation
Fitment & installation
Check the selected part against your vehicle. Need help? Call (561) 207-7988.
Selected part: 256-120134
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Read FOX’s application notes for part 987-24-001 (rear shock)
Payment & Security
Payment methods
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