We a duramax exhaust pipe manufacturer 

4.0 Inch Cat & DPF Race Pipes – Aluminized Steel for 2017–2022 GM 6.6L Duramax L5P

We a duramax exhaust pipe manufacturer 

4.0 Inch Cat & DPF Race Pipes – Aluminized Steel for 2017–2022 GM 6.6L Duramax L5P

Duramax exhaust pipe manufacturer.  This 4.0 inch Cat & DPF Race Pipe is made for aftermarket distributors, retailers, and private label brands targeting the North American diesel performance market. Designed for 2017–2022 GM 2500/3500 6.6L Duramax L5P, this product delivers consistent quality, competitive pricing, and scalable supply.

We specialize in OEM & bulk production of diesel exhaust systems, supporting customers with custom branding, packaging, and specification adjustments to meet different market needs.

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Duramax exhaust pipe manufacturer in China

Stable Manufacturing Capacity

  • Duramax exhaust pipe manufacturer, Equipped with multiple mandrel bending machines, welding stations, and stamping equipment

  • Capable of handling large-volume orders with consistent lead times
  • Strict quality control throughout production, view our manufacturing services for more information about us.

OEM & Customization Support

  • Custom diameter, length, bends, and connection types available
  • Accept customer drawings, samples, or specifications
  • Private label branding & packaging support for your retail market

Material Options

  • Standard: Aluminized Steel (cost-effective for high-volume retail)
  • Optional: Stainless Steel 409 / 304

North America Market Experience

  • Familiar with Duramax / Powerstroke / Cummins platforms
  • Products designed to match aftermarket installation standards
  • Export experience to USA & Canada distributors

Product Specifications

  • Product Name: Cat & DPF Race Pipe
  • Engine Compatibility: 6.6L Duramax L5P
  • Vehicle Fitment: 2017–2022 GM 2500HD / 3500HD
  • Pipe Diameter: 4.0 inch
  • Material: Aluminized Steel
  • Manufacturing Process: Mandrel bending + precision welding
  • Connection Type: Bolt-on / flange fitment
  • Application: Aftermarket / off-road

Supply & Packaging

  • Bulk packaging or retail-ready packaging available
  • Palletized shipment for container loading
  • Support mixed container orders (different SKUs)
  • Flexible MOQ for long-term partners

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