MagnaFlow 4in Turbo Downpipe GM 6.6L Duramax Stainless Steel
Regular price
$209.00
Oversized Item
This item ships by freight. Shipping isn't calculated at checkout — we'll contact you with a freight quote after your order is placed.
Verified Fitment & Application Support
This product is selected for proper fitment and compatibility with the listed engine application. Our team is available to assist with fitment questions, installation considerations, and supporting components to ensure a smooth install and reliable performance.
Got Questions? Feel free to email us or call us at (503) 235-1947
Compliance & Restrictions
California Proposition 65 (Prop 65)
WARNING: This product can expose you to chemicals which is known to the State of California to cause cancer and/or reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
CARB / California Emissions Compliance
This item may be restricted in California and other regions with emissions regulations. If applicable, it is intended for
competition/off-road use only unless otherwise stated. It is the customer’s responsibility to confirm local compliance before purchase.
Orders shipping to restricted areas may be canceled.
A 4in mandrel-bent stainless turbo downpipe. At 4in it is the larger of MagnaFlow's Duramax downpipes and suits trucks already running a 4in or 5in exhaust behind it.
Weight-optimised and built with CNC mandrel bending, so the diameter holds through the bends where the pipe has to work around the turbo. Professional installation is recommended.
The source listing gives 2006-2007 GM 6.6L diesel. MagnaFlow does not publish a year range for this part number. Confirm before ordering.
Specs
- Diameter: 4in
- Material: stainless steel
- Manufacturer Part Number: 15399
Shipping Height: 12.7
Shipping Length: 56.3
Shipping Width: 15.4