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Flowmaster

Flowmaster American Thunder Exhaust Systems 817891 Exhaust, Thunder, Cat-Back, Stainless Steel, Chevrolet, GMC 1500, 6.2L, Black Quad Tips, Each

SKU: FLO817891

Exhaust Systems
Flowmaster American Thunder Exhaust Systems 817891 Exhaust, Thunder, Cat-Back, Stainless Steel, Chevrolet, GMC 1500, 6.2L, Black Quad Tips, Each

Flowmaster

Flowmaster American Thunder Exhaust Systems 817891 Exhaust, Thunder, Cat-Back, Stainless Steel, Chevrolet, GMC 1500, 6.2L, Black Quad Tips, Each

SKU: FLO817891

Exhaust Systems
A$3,611.89
LAST ONE! Est Ship 4-7 days. LAST ONE! This is the last unit at our distribution centre. Contact us if you need more. The ETA is the approximate time required to prepare your order for dispatch.
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Description

Flowmaster American Thunder exhaust systems are designed with the latest exhaust technology available--resulting in improved acceleration, passing power, and fuel mileage. A key to these performance upgrades is Flowmaster's use of mandrel-bent tubing, which allows superior exhaust gas flow. The systems also feature mufflers (single or dual) that deliver plenty of the rich Flowmaster sound you expect. Components are built from stainless steel or aluminized steel; and some models include tips. American Thunder exhausts are available in more than a hundred configurations for fitment on specific truck and car applications.

Part Type

Cat Back Exhaust Kit 19- GM P/U 1500 6.2L

Data: v4.2 - Upd: 2026-10-17 03:10:41

Specifications

Product Attributes - Brand
Flowmaster
Product Attributes - Manufacturer's Part Number
817891
Product Attributes - Part Type
Exhaust Systems
Product Attributes - Product Line
Flowmaster American Thunder Exhaust Systems
Product Attributes - UPC
700042039050
Product Attributes - System Material
409 stainless steel
Product Attributes - System Style
Cat-back
Product Attributes - Exhaust Type
Single in/Dual out
Product Attributes - Exit Location
Split rear
Product Attributes - System Finish
Natural
Product Attributes - Catalytic Converter(s) Included
No
Product Attributes - Intermediate Pipe Diameter (in.)
2.50 in.
Product Attributes - Muffler Included
Yes
Product Attributes - Muffler Quantity
One
Product Attributes - Muffler Configuration
Single inlet/Dual outlet
Product Attributes - Muffler Style
Chambered
Product Attributes - Muffler Material
409 stainless steel
Product Attributes - Muffler Finish
Black
Product Attributes - Hardware Included
Yes
Product Attributes - Tailpipe Diameter (in.)
2.50 in.
Product Attributes - Tip Included
Yes
Product Attributes - Tip Outlet Size (in.)
4.00
Product Attributes - Tip Quantity
4
Product Attributes - Tip Shape
Round
Product Attributes - Tip Cut
Slant
Product Attributes - Tip Edge Style
Rolled edge
Product Attributes - Tip Material
304 stainless steel
Product Attributes - Tip Color
Black
Product Attributes - Remanufactured
No
Product Attributes - Quantity
Sold as a kit.
Product Attributes - Special Attention
It is illegal to install parts or components that bypass, defeat, or render inoperative the manufacturers’ technology and design necessary to reduce vehicle emissions to meet state and federal Clean Air Act standards.

Reference Information

Brand Name/s Flowmaster
StreetFX SKU flo817891
SFX Item ID 4984239
Supplier Item Code 4984239
Manufacturer SKU 817891
Manufacturer UPC 700042039050
Alternative References FLM817891, 6.2L

Compatibility

Application Data
  • MakeGMC
    ModelSIERRA 1500
    SubmodelAT4
    Beginning Year2021
    Ending Year2023
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen V
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)79.4in, 201.7cm
    TransmissionAutomatic
    DrivetrainRWD
    Application Notes69.9in, 177.6cm; Crew Cab Pickup; 4WD
    RegionUSA
    Engine VIN CodeL
  • MakeGMC
    ModelSIERRA 1500
    SubmodelAT4
    Beginning Year2021
    Ending Year2023
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen V
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)79.4in, 201.7cm
    TransmissionAutomatic
    DrivetrainRWD
    Application Notes79.4in, 201.7cm; Crew Cab Pickup; 4WD; Flowmaster American Thunder Cat-back Exhaust System
    RegionUSA
    Engine VIN CodeL
  • MakeGMC
    ModelSIERRA 1500
    SubmodelAT4
    Beginning Year2021
    Ending Year2023
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen V
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)69.9in, 177.6cm
    TransmissionAutomatic
    DrivetrainRWD
    Application Notes79.4in, 201.7cm; Crew Cab Pickup; 4WD
    RegionUSA
    Engine VIN CodeL
  • MakeGMC
    ModelSIERRA 1500
    SubmodelAT4
    Beginning Year2021
    Ending Year2020
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen V
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)69.9in, 177.6cm
    TransmissionAutomatic
    DrivetrainRWD
    Application Notes69.9in, 177.6cm; Extended Cab Pickup; 4WD; Flowmaster American Thunder Cat-back Exhaust System
    RegionUSA
    Engine VIN CodeL
  • MakeGMC
    ModelSIERRA 1500
    SubmodelAT4
    Beginning Year2021
    Ending Year2020
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen V
    Body StyleCrew Cab Pickup
    Truck Bed Length in. (AAIA)79.4in, 201.7cm
    TransmissionAutomatic
    DrivetrainRWD
    Application Notes69.9in, 177.6cm; Extended Cab Pickup; 4WD
    RegionUSA
    Engine VIN CodeL
  • MakeGMC
    ModelSIERRA 1500
    SubmodelAT4
    Beginning Year2021
    Ending Year2020
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen V
    Body StyleCrew Cab Pickup
    Truck Bed Length in. (AAIA)79.4in, 201.7cm
    TransmissionAutomatic
    DrivetrainRWD
    Application Notes79.4in, 201.7cm; Extended Cab Pickup; 4WD; Flowmaster American Thunder Cat-back Exhaust System
    RegionUSA
    Engine VIN CodeL
  • MakeGMC
    ModelSIERRA 1500
    SubmodelAT4
    Beginning Year2021
    Ending Year2020
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen V
    Body StyleCrew Cab Pickup
    Truck Bed Length in. (AAIA)69.9in, 177.6cm
    TransmissionAutomatic
    DrivetrainRWD
    Application Notes79.4in, 201.7cm; Extended Cab Pickup; 4WD
    RegionUSA
    Engine VIN CodeL
  • MakeGMC
    ModelSIERRA 1500
    SubmodelAT4X
    Beginning Year2021
    Ending Year2020
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen V
    Body StyleCrew Cab Pickup
    Truck Bed Length in. (AAIA)69.9in, 177.6cm
    TransmissionAutomatic
    DrivetrainRWD
    Application Notes69.9in, 177.6cm; Crew Cab Pickup; 4WD; FITS 147" AND 157" WHEELBASES WITH 6.2L AND FACTORY DUAL EXHAUST.
    RegionUSA
    Engine VIN CodeL
  • MakeGMC
    ModelSIERRA 1500
    SubmodelAT4X
    Beginning Year2021
    Ending Year2022
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen V
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)79.4in, 201.7cm
    TransmissionAutomatic
    DrivetrainRWD
    Application Notes69.9in, 177.6cm; Crew Cab Pickup; 4WD; Flowmaster American Thunder Cat-back Exhaust System; FITS 147" AND 157" WHEELBASES WITH 6.2L AND FACTORY DUAL EXHAUST.
    RegionUSA
    Engine VIN CodeL
  • MakeGMC
    ModelSIERRA 1500
    SubmodelAT4X
    Beginning Year2021
    Ending Year2022
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen V
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)79.4in, 201.7cm
    TransmissionAutomatic
    Drivetrain4WD
    Application Notes79.4in, 201.7cm; Crew Cab Pickup; 4WD; FITS 147" AND 157" WHEELBASES WITH 6.2L AND FACTORY DUAL EXHAUST.
    RegionUSA
    Engine VIN CodeL
  • MakeGMC
    ModelSIERRA 1500
    SubmodelDENALI
    Beginning Year2021
    Ending Year2022
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen V
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)69.9in, 177.6cm
    TransmissionAutomatic
    DrivetrainRWD
    Application Notes69.9in, 177.6cm; Crew Cab Pickup; American Thunder Cat Back Exhaust System; Dual Out Rear Exit; Incl. 2.5 in. Tubing/Straight Through Mufflers/Round Polished Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant
    RegionUSA
    Engine VIN CodeL
  • MakeGMC
    ModelSIERRA 1500
    SubmodelDENALI
    Beginning Year2021
    Ending Year2023
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen V
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)69.9in, 177.6cm
    TransmissionAutomatic
    Drivetrain4WD
    Application Notes69.9in, 177.6cm; Crew Cab Pickup; American Thunder Cat Back Exhaust System; Dual Out Rear Exit; Incl. 2.5 in. Tubing/Straight Through Mufflers/Round Polished Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant
    RegionUSA
    Engine VIN CodeL
  • MakeGMC
    ModelSIERRA 1500
    SubmodelDENALI
    Beginning Year2021
    Ending Year2019
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen V
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)79.4in, 201.7cm
    TransmissionAutomatic
    DrivetrainRWD
    Application Notes79.4in, 201.7cm; Crew Cab Pickup; American Thunder Cat Back Exhaust System; Dual Out Rear Exit; Incl. 2.5 in. Tubing/Straight Through Mufflers/Round Polished Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant
    RegionUSA
    Engine VIN CodeL
  • MakeGMC
    ModelSIERRA 1500
    SubmodelDENALI
    Beginning Year2021
    Ending Year2019
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen V
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)79.4in, 201.7cm
    TransmissionAutomatic
    DrivetrainRWD
    Application Notes79.4in, 201.7cm; Crew Cab Pickup; American Thunder Cat Back Exhaust System; Dual Out Rear Exit; Incl. 2.5 in. Tubing/Straight Through Mufflers/Round Polished Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant
    RegionUSA
    Engine VIN CodeL
  • MakeGMC
    ModelSIERRA 1500
    SubmodelDENALI
    Beginning Year2021
    Ending Year2021
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen V
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)79.4in, 201.7cm
    TransmissionAutomatic
    Drivetrain4WD
    Application Notes69.9in, 177.6cm; Crew Cab Pickup; 4WD; Flowmaster American Thunder Cat-back Exhaust System
    RegionUSA
    Engine VIN CodeL
  • MakeGMC
    ModelSIERRA 1500
    SubmodelDENALI
    Beginning Year2021
    Ending Year2021
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen V
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)79.4in, 201.7cm
    TransmissionAutomatic
    Drivetrain4WD
    Application Notes69.9in, 177.6cm; Crew Cab Pickup; 4WD
    RegionUSA
    Engine VIN CodeL
  • MakeGMC
    ModelSIERRA 1500
    SubmodelDENALI
    Beginning Year2020
    Ending Year2019
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen V
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)69.9in, 177.6cm
    TransmissionAutomatic
    DrivetrainRWD
    Application Notes69.9in, 177.6cm; Crew Cab Pickup; RWD; Flowmaster American Thunder Cat-back Exhaust System
    RegionUSA
    Engine VIN CodeL
  • MakeGMC
    ModelSIERRA 1500
    SubmodelDENALI
    Beginning Year2020
    Ending Year2019
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen V
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)69.9in, 177.6cm
    TransmissionAutomatic
    DrivetrainRWD
    Application Notes69.9in, 177.6cm; Crew Cab Pickup; RWD
    RegionUSA
    Engine VIN CodeL
  • MakeGMC
    ModelSIERRA 1500
    SubmodelDENALI
    Beginning Year2020
    Ending Year2020
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen V
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)69.9in, 177.6cm
    TransmissionAutomatic
    Drivetrain4WD
    Application Notes79.4in, 201.7cm; Crew Cab Pickup; 4WD; Flowmaster American Thunder Cat-back Exhaust System
    RegionUSA
    Engine VIN CodeL
  • MakeGMC
    ModelSIERRA 1500
    SubmodelDENALI
    Beginning Year2020
    Ending Year2020
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen V
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)69.9in, 177.6cm
    TransmissionAutomatic
    Drivetrain4WD
    Application Notes79.4in, 201.7cm; Crew Cab Pickup; 4WD
    RegionUSA
    Engine VIN CodeL
  • MakeGMC
    ModelSIERRA 1500
    SubmodelDENALI
    Beginning Year2021
    Ending Year2023
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen V
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)79.4in, 201.7cm
    TransmissionAutomatic
    DrivetrainRWD
    Application Notes79.4in, 201.7cm; Crew Cab Pickup; RWD; Flowmaster American Thunder Cat-back Exhaust System
    RegionUSA
    Engine VIN CodeL
  • MakeGMC
    ModelSIERRA 1500
    SubmodelDENALI
    Beginning Year2021
    Ending Year2023
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen V
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)79.4in, 201.7cm
    TransmissionAutomatic
    DrivetrainRWD
    Application Notes79.4in, 201.7cm; Crew Cab Pickup; RWD
    RegionUSA
    Engine VIN CodeL
  • MakeGMC
    ModelSIERRA 1500
    SubmodelDENALI
    Beginning Year2021
    Ending Year2024
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen V
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)79.4in, 201.7cm
    TransmissionAutomatic
    Drivetrain4WD
    Application Notes69.9in, 177.6cm; Crew Cab Pickup; 4WD; FITS 147" AND 157" WHEELBASES WITH 6.2L AND FACTORY DUAL EXHAUST.
    RegionUSA
    Engine VIN CodeL
  • MakeGMC
    ModelSIERRA 1500
    SubmodelDENALI
    Beginning Year2021
    Ending Year2024
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen V
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)79.4in, 201.7cm
    TransmissionAutomatic
    Drivetrain4WD
    Application Notes69.9in, 177.6cm; Crew Cab Pickup; 4WD; FITS 147" AND 157" WHEELBASES WITH 6.2L AND FACTORY DUAL EXHAUST.
    RegionUSA
    Engine VIN CodeL
  • MakeGMC
    ModelSIERRA 1500
    SubmodelDENALI
    Beginning Year2021
    Ending Year2024
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen V
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)69.9in, 177.6cm
    TransmissionAutomatic
    DrivetrainRWD
    Application Notes69.9in, 177.6cm; Crew Cab Pickup; 4WD; Flowmaster American Thunder Cat-back Exhaust System; FITS 147" AND 157" WHEELBASES WITH 6.2L AND FACTORY DUAL EXHAUST.
    RegionUSA
    Engine VIN CodeL

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