Chevrolet, GMC Duramax 6.2L, 6.5L, 6.6L; 4.0" Diesel Muffler Upgrade K - Volant Performance

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Chevrolet, GMC Duramax 6.2L, 6.5L, 6.6L; 4.0" Diesel Muffler Upgrade Kit


Chevrolet 4.0" Diesel Muffler Upgrade- Fits all (6.2L, 6.5L, 6.6L) exhaust systems
GMC 4.0" Diesel Muffler Upgrade Fits all (6.2L, 6.5L, 6.6L) exhaust systems


4.0" Muffler Upgrade Kit (Features 4.0" Expanded Inlet & Outlet with Clamps)

  • Muffler Material: 304 Stainless Steel
  • Case Shape: Round
  • Inlet Diameter: 4.0"
  • Inlet Location: Center
  • Outlet Diameter: 4.0"
  • Outlet Quantity: One
  • Case Length: 23.75"
  • Case Diameter: 9.62"
  • Overall Length: 27.5"


Constructed from premium stainless steel to deliver lasting performance, sound and appearance. Easy bolt-on installation. No welding needed. All hardware and detailed instructions are included in each kit. Proudly Designed, Engineered & Manufactured in Berea, OH

NOTE: Engineered and designed to match the unique properties of the vehicle it is designed for to deliver perfect fitment and performance. It is not recommend and Volant will not recognize purchases and installation on unspecified vehicles.

*Diesel mufflers eliminate most drone inducing frequencies, muffler position and/or certain vehicle modification(s) may reduce drone mitigation capability

Installation Instructions

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