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Flowmaster Flow FX Direct Fit Muffler for Chevrolet and GMC

Part # 718155

  • 3.5-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
  • Kit includes complete hardware and factory styled hangers in the stock locations for an easy installation
  • A tuned Flow FX style muffler delivers a deep, aggressive to moderate performance tone and improves exhaust flow with no drone
  • Max increases of up to 7 hp and 5 lb-ft over the stock exhaust at the wheels
  • Tuned performance muffler eliminates interior drone
  • Maintains factory warranty
  • Lifetime Limited Warranty

Description

Flowmaster's® Flow FX Direct-Fit Muffler exhaust system for the 2020-2026 GM 2500HD and 3500HD trucks with the 6.6L gas engines gives you a great value packed way to help you customize your GM truck to your personality. This performance muffler system fits both 2/4 Wheel drive models and is manufactured from 409 stainless steel for years of trouble-free service and performance. Features include a 3.50-inch inlet pipe leading into a 409 stainless steel Flow FX series "straight-through" muffler for great sound and maximum performance and no drone. The muffler then connects to the factory tailpipe for a simple and effective performance upgrade. Max dyno gains of 7 hp and 5 lb-ft at the rear wheels. This results in better acceleration and towing performance. The system uses all the factory hanger locations and connections for an easy installation that you can do at home. Kits include installation instructions and all necessary hardware. Backed by Flowmaster's Lifetime Limited Warranty.

Specifications

Body Diameter5 in
Body Height5 in
Body Length18
Body Material409 Stainless Steel
Body Width8 in
Catalytic Converter IncludedNo
Clamping TypeFlat Band
Clamps IncludedYes
ColorNatural
Exhaust SeriesFlow FX
Exhaust Tip Quantity0
Exit StyleOEM
FinishNatural
Gasket Or Seal IncludedNo
Grade TypePerformance
Heat Shield AttachedNo
Heat Shield IncludedNo
Inlet Diameter3.5
Inlet Inside Diameter3.52 in
Inlet LocationCenter
Inlet Outside Diameter3.11 in
Inlet Quantity1
Inlet TypeSlip-Fit
Main Piping DiameterCenter
Material409 Stainless Steel
Mount TypeUses Factory Hangers
Muffler Body Length10
UPC / GTIN00090127977781
WarrantyManufacturer's Limited Lifetime Warranty

Fits these vehicles

YearMakeModelSubmodelEngine
2020 - 2023ChevroletSilverado 2500 HDCustom, High Country, LT, LTZ, WT6.6L V8
2024 - 2026ChevroletSilverado 2500 HDCustom, High Country, LT, LTZ, WT, ZR26.6L V8
2020 - 2025ChevroletSilverado 3500 HDBase, High Country, LT, LTZ, WT6.6L V8
2026ChevroletSilverado 3500 HDHigh Country, LT, LTZ, WT6.6L V8
2020 - 2021GMCSierra 2500 HDAT4, Base, Denali, SLE, SLT6.6L V8
2022 - 2023GMCSierra 2500 HDAT4, Denali, Pro, SLE, SLT6.6L V8
2024 - 2026GMCSierra 2500 HDAT4, AT4X, Denali, Pro, SLE, SLT6.6L V8
2020 - 2021GMCSierra 3500 HDAT4, Base, Denali, SLE, SLT6.6L V8
2022 - 2026GMCSierra 3500 HDAT4, Denali, Pro, SLE, SLT6.6L V8