Exhaust› Exhaust Pipes, Systems and Components
Magnaflow
MagnaFlow Performance Exhaust Diesel Turbo Downpipe 15399
SKU: M001 15399
Moderate — 2–4 hours
Description
Part #: 15399
The MagnaFlow Performance Exhaust Diesel Turbo Downpipe 15399 is a 4in. diameter mandrel bent stainless steel pipe that is weight-optimized with superior flow characteristics and performance. Each performance pipe is produced using precision CNC robotic manufacturing techniques and features 100% durable, corrosion resistant stainless steel construction. Professional installation is highly recommended.
Features:
- Durable corrosion-resistant stainless steel construction
- CNC precision robotic manufacturing techniques
- Mandrel bent tubing
Magnaflow Direct-Fit Exhaust Pipe
MIA's Description
Constructed from 304 stainless steel, this performance pipe is produced using precision CNC robotic manufacturing techniques for durability and corrosion resistance. It features a direct-fit design that utilizes OEM exhaust break locations for easier installation, and professional installation is highly recommended.
Fitment
Fitment Guaranteed
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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Magnaflow |
| Part Number | M001 15399 |
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Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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