What is the main benefit of a mandrel bent pipe?

Mandrel bending allows the pipe to maintain its full diameter through the bends. This prevents kinks or restrictions, ensuring smoother exhaust flow compared to crush bends.

Is this downpipe compatible with all 6.6L Duramax engines?

This specific downpipe (part #15399) is designed for 2001-2007 model years of the Chevrolet Silverado and GMC Sierra 2500 HD and 3500 trucks equipped with the 6.6L diesel engine.

Does this downpipe come with installation hardware?

The manufacturer's description does not specify if installation hardware is included. Professional installation is recommended, and they can advise on any additional parts needed.

Magnaflow Diesel Down-Pipe 15399 - 2001-2007 GM 6.6L

Name: MagnaFlow Down-Pipe 06-07 GM Diesel 6.6L
Brand: Magnaflow
Price: 205.30 USD
Availability: InStock

MagnaFlow Down-Pipe 06-07 GM Diesel 6.6L

$205.30

Only 6 left in stock

MagnaFlow 4-inch stainless steel diesel down-pipe for 2001-2007 GM 6.6L trucks. Improves exhaust flow and resists corrosion.

Key Features

Fits 2001-2007 Chevrolet Silverado 2500 HD, 3500 and GMC Sierra 2500 HD, 3500 models with the 6.6L diesel engine.
Durable, corrosion-resistant stainless steel construction resists rust and heat.
4-inch diameter pipe with mandrel bends maintains consistent diameter for improved exhaust flow.
CNC precision robotic manufacturing techniques ensure a well-built part.
Weight-optimized design contributes to overall performance.

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Will this fit your vehicle?

Product Details

This is the MagnaFlow Performance Diesel Turbo Down-Pipe, part number 15399. It's built for GM trucks with the 6.6L Duramax diesel engine from 2001 through 2007, including popular models like the Chevrolet Silverado 2500 HD and GMC Sierra 3500. This downpipe is a key component in optimizing your exhaust system, helping to get exhaust gases out of the turbo more efficiently.

Constructed from durable, corrosion-resistant stainless steel, this 4-inch diameter pipe features mandrel bends. Mandrel bending means the pipe maintains its full diameter through the bends, which is crucial for smooth exhaust flow and improved performance. The precision CNC robotic manufacturing ensures a well-built part that fits right and holds up over time, resisting rust and heat.

Because this is a performance exhaust component, professional installation is highly recommended to ensure it's properly integrated into your existing exhaust system. Please note this part is not CARB approved and cannot be shipped to California.