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2017-2026 Duramax 4" SS CAT & DPF Race Pipe - w/ Muffler (DDC-3GM17M)
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2017-2026 Duramax 4" SS CAT & DPF Race Pipe - w/ Muffler (DDC-3GM17M)

2017-2026 Duramax 4" SS CAT & DPF Race Pipe - w/ Muffler (DDC-3GM17M)

$563.00
2017-2026 Duramax 4" SS CAT & DPF Race Pipe - w/ Muffler (DDC-3GM17M)—
$563.00

The Story

Description

Fits

Year Make Model
2017-2026 GM Duramax L5P 6.6L w/ 4-Bolt Flange

Note: Fits Crew Cab Short Box trucks directly; other configurations may require modification. Only fits models equipped with the OEM-style 4-bolt turbo direct pipe flange. Custom aftermarket tuning is required. Designed for competition/race use only.

The DDC-3GM17M is a 4" CAT and DPF Race Pipe kit designed for 2017-2026 L5P Duramax 6.6L trucks. This system replaces restrictive factory components with high-flow 4" piping to boost torque, improve fuel efficiency, and unleash a deeper, more aggressive exhaust tone. Built for long-term reliability and a precise fit, this kit allows your L5P to breathe properly and perform at its peak.

Why Shop Dirty Exhausts?
When you buy from Dirty Diesel, you’re buying peace of mind. We’ve put in the work to bring you exhaust systems that meet our strict standards for durability and flow. Every kit is vetted for a precision, bolt-on fit, ensuring you get a high-performance system that sounds as good as it performs, without the headache of poor fitment or subpar materials.

Part Number: DDC-3GM17M

Features
  • 4" High-Flow CAT & DPF Race Pipe
  • T409 Stainless Steel Construction
  • Includes Muffler for Refined Sound Control
  • OEM-Style 4-Bolt Flange for Secure Sealing
  • No Sensor Bungs Required
  • Boosts Torque & Fuel Mileage
  • Easy, Straightforward Installation
Includes
  • 4" CAT & DPF Race Pipe
  • Muffler
OEM Part Numbers

GM 85165535 (supersedes 84614676)

2017-2026 Duramax 4" SS CAT & DPF Race Pipe - w/ Muffler (DDC-3GM17M) - Image 2

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

2017-2026 Duramax 4" SS CAT & DPF Race Pipe - w/ Muffler (DDC-3GM17M) - Image 3

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

2017-2026 Duramax 4" SS CAT & DPF Race Pipe - w/ Muffler (DDC-3GM17M) - Image 4

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

Description

Description

Fits

Year Make Model
2017-2026 GM Duramax L5P 6.6L w/ 4-Bolt Flange

Note: Fits Crew Cab Short Box trucks directly; other configurations may require modification. Only fits models equipped with the OEM-style 4-bolt turbo direct pipe flange. Custom aftermarket tuning is required. Designed for competition/race use only.

The DDC-3GM17M is a 4" CAT and DPF Race Pipe kit designed for 2017-2026 L5P Duramax 6.6L trucks. This system replaces restrictive factory components with high-flow 4" piping to boost torque, improve fuel efficiency, and unleash a deeper, more aggressive exhaust tone. Built for long-term reliability and a precise fit, this kit allows your L5P to breathe properly and perform at its peak.

Why Shop Dirty Exhausts?
When you buy from Dirty Diesel, you’re buying peace of mind. We’ve put in the work to bring you exhaust systems that meet our strict standards for durability and flow. Every kit is vetted for a precision, bolt-on fit, ensuring you get a high-performance system that sounds as good as it performs, without the headache of poor fitment or subpar materials.

Part Number: DDC-3GM17M

Features
  • 4" High-Flow CAT & DPF Race Pipe
  • T409 Stainless Steel Construction
  • Includes Muffler for Refined Sound Control
  • OEM-Style 4-Bolt Flange for Secure Sealing
  • No Sensor Bungs Required
  • Boosts Torque & Fuel Mileage
  • Easy, Straightforward Installation
Includes
  • 4" CAT & DPF Race Pipe
  • Muffler
OEM Part Numbers

GM 85165535 (supersedes 84614676)

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