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Magnaflow

MagnaFlow Down-Pipe 06-07 GM Diesel 6.6L

MPN: 15399 Catalog #: 001191903 Category: Downpipe Back Check Vehicle Fitment

Product Details

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.

The MagnaFlow Turbo Downpipe 15399 is a 4in. diameter mandrel bent stainless steel pipe designed to connect near your turbocharger and i's 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.

2006–2007 MagnaFlow Down-Pipe 06-07 GM Diesel 6.6L

Vehicle Fitment

Please verify year, make, model, and any notes before ordering.

Product Specs

Brand
Magnaflow
Part Number
15399
Catalog Number
001191903
Product Line
Downpipe Back Exhaust
Category
Exhaust
Type
Downpipe Back
UPC / Barcode
841380078094
Vendor Product Category
Exhaust, Mufflers & Tips
Vendor Product Subcategory
Downpipe Back
Length
56.40 in
Width
15.30 in
Height
12.10 in
Weight
18.60 lb
Units Per SKU
1
Freight / LTL
No
Air Restricted
No
CARB Approved
No
Clearance Item
No

Shipping & Availability

Current status 16 Available - Ready to ship
Estimated timing Usually ships within 24hrs

This item is showing available inventory. Most in-stock performance parts ship quickly, but timing can vary by warehouse, vendor cut-off time, holidays, and carrier pickup.

STATE RESTRICTIONS: This item is not CARB approved and can not ship to California.

Inventory shown: 16 available as of 6/3/2026.

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