Description
Two- and four-wheel-drive 2020–2025 GM 2500/3500 HD trucks with the 6.6-liter gasoline engine use direct-fit muffler 718155. The 409 stainless FlowFX construction provides a more aggressive exhaust tone and performance intended to support towing. Home installation is supported and the manufacturer states factory warranty coverage is unaffected.
Specifications
| Estimated Install Time (Hours) | 1 |
|---|---|
| Case Length (IN) | 18 Inch |
| Inlet Diameter (IN) | 3-1/2 Inch |
| Outlet Diameter (IN) | 3-1/2 Inch |
| Overall Length (IN) | 34-1/4 Inch |
| Case Diameter (IN) | 5 Inch |
| Inlet Position | Center Single |
| Outlet Position | Center Single |
| Shape | Round |
| Material | Stainless Steel |
| Universality | Vehicle Specific |
| Includes Tip | Without Tip |
| Tip Diameter (IN) | Without Tip |
| Tip Finish | Without Tip |
| Tip Length (IN) | Without Tip |
| Tip Material | Without Tip |
These Flowmaster Flow FX Direct-Fit muffler assemblies and Cat-Back system will give the owners of the 2020 to 2025 GM 2500HD/ 3500HD 6.6 Liter gas engine trucks a more aggressive exhaust tone and added performance for more towing power at a budget friendly price. These performance systems fit both 2/4 Wheel drive models and are manufactured from 409 stainless steel for years of trouble-free service and performance. Not just a bargain, these muffler assemblies and cat-back system are designed to be installed at home and will not affect the factory warranty.
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