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Magnaflow 3" Stainless Steel Turbo Direct Pipe 01-04 GM 6.6L Duramax
Magnaflow 3" Stainless Steel Turbo Direct Pipe 01-04 GM 6.6L Duramax photo 1
Magnaflow 3" Stainless Steel Turbo Direct Pipe 01-04 GM 6.6L Duramax photo 2
Magnaflow 3" Stainless Steel Turbo Direct Pipe 01-04 GM 6.6L Duramax photo 3
MagnaFlow Exhaust

Magnaflow 3" Stainless Steel Turbo Direct Pipe 01-04 GM 6.6L Duramax

MPN: MF-15398
Daily DriverTow PigStreet Performance
$212
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Fitment sensitive
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The MagnaFlow Performance Exhaust Diesel Turbo Downpipe  is a high-quality performance exhaust component designed to improve exhaust flow and support greater turbo efficiency in diesel applications. Constructed from mandrel-bent stainless steel, this downpipe replaces the restrictive factory section near your turbocharger with a smoother, more open path for exhaust gases, helping reduce backpressure and improve overall engine response.

Built using precision CNC robotic manufacturing techniques, the downpipe delivers superior fitment and long-lasting corrosion resistance for dependable day-to-day performance. Its direct-fit design makes installation straightforward by using existing break locations in the exhaust, and its compact 23" length with 3" main piping is optimized for improved flow characteristics without unnecessary complexity. Whether you’re repairing a worn stock pipe or upgrading your exhaust system as part of a performance build, this downpipe provides a solid foundation for better turbo response.

FEATURES & BENEFITS:

• Mandrel-bent 3" stainless steel tubing for improved exhaust flow and durability.

• CNC precision construction for consistent shape and reliable performance.

• Corrosion-resistant stainless steel construction for long service life.

• Direct-fit bolt-on design that uses OEM exhaust break points.

• Weight-optimized for performance without added bulk.

INSTALLATION NOTES:

• Turbo downpipe configuration connects near the turbocharger to replace factory exhaust routing.

• Direct-fit design makes installation simpler for experienced technicians or DIY enthusiasts.

• Confirm vehicle compatibility before purchase. This pipe is typically used in diesel trucks and performance diesel builds.

The MagnaFlow Turbo Downpipe is an excellent choice for diesel truck owners looking to enhance exhaust flow and support improved turbocharger performance with a durable, direct-fit stainless steel component.

Warranty
Warranty based on supplier terms

Diesel Power Products directs warranty claims to the respective manufacturer; coverage and duration depend on that manufacturer and product. Its one-year manufacturer-defect warranty applies only to products manufactured by Power Products Unlimited Inc., not all products it sells. Manufacturer inspection is required; DPP does not pay inspection/return shipping or labor.

Return and warranty information is based on what Diesel Power Products offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.

Diesel Power Products warranty policyView complete warranty

Product conditions

Return and warranty information is based on what Diesel Power Products offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.

Return eligibility
Diesel Power Products states a 30-day window from receipt for eligible new, uninstalled, unopened and complete items in original packaging, with prior approval/RMA. Custom tuners and specified opened tools are excluded. Customer pays return shipping; original outbound shipping, including initially free shipping, is deducted. No standard restocking percentage is stated for ordinary approved returns. Based on what Diesel Power Products offers.
Return window
Not stated for this product; see supplier terms
Restocking fee
See supplier terms; no product-specific fee stated
Return shipping
Based on the supplier’s return policy; see terms
Made to order
No
Backorder status
Not backordered
Cancellation
Subject to supplier terms; contact FullSpecDiesel before requesting cancellation
Warranty provider
Diesel Power Products
Warranty duration
Product-specific duration not stated; see supplier terms
Compatibility
Listed for specific vehicle configurations
Legal use
Street legal
Processing estimate
3–7 business days supplier processing
Shipping
Shipping calculated at checkout
Signature
No signature requirement
Supplier
Diesel Power Products

Product compatibility is based on the vehicle and product information provided. Review your selected truck, product options, measurements, modifications, and installation requirements before ordering.