Home / Shop / Flowmaster Stainless Steel American Thunder Exhaust Systems for 1967-1970 MUSTANG - 817282 System, Thunder, Header-back, Dual, Stainless, Split Rear Exit, Ford, Kit

Flowmaster Stainless Steel American Thunder Exhaust Systems for 1967-1970 MUSTANG - 817282 System, Thunder, Header-back, Dual, Stainless, Split Rear Exit, Ford, Kit

SKU: FLO817282

Exhaust Systems

Flowmaster

Flowmaster Stainless Steel American Thunder Exhaust Systems for 1967-1970 MUSTANG - 817282 System, Thunder, Header-back, Dual, Stainless, Split Rear Exit, Ford, Kit

SKU: FLO817282

Exhaust Systems

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Description

IMPORTANT NOTICE: Will not fit applications with valance cutouts, staggered shocks, or convertibles. Due to variations in different manufacturers headers, modifications to the length and or angles of the intermediate pipes may be required when connecting to the header collectors.

Flowmaster Stainless Steel American Thunder exhaust systems have been designed with the latest exhaust technology available. Through this technology, you will experience improvements in acceleration, passing power, and fuel mileage. The key to these performance improvements is Flowmaster's use of mandrel-bent tubing. Their tubing allows for superior exhaust gas flow, while their stainless steel construction allows for their corrosion-resistant qualities. These American Thunder exhaust systems also feature a stainless steel muffler(s) that'll give you plenty of Flowmaster sound.

Part Type

Exhaust Systems

Data: v4.2 - Upd: 2026-10-17 03:11:04

Specifications

Product Attributes - Brand: Flowmaster
Product Attributes - Manufacturer's Part Number: 817282
Product Attributes - Part Type: Exhaust Systems
Product Attributes - Product Line: Flowmaster Stainless Steel American Thunder Exhaust Systems
Product Attributes - UPC: 700042024759
Product Attributes - System Material: 409 stainless steel
Product Attributes - System Style: Header-back
Product Attributes - Exhaust Type: Dual
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: Two
Product Attributes - Muffler Configuration: Single inlet/Single outlet
Product Attributes - Muffler Style: Chambered
Product Attributes - Muffler Material: 409 stainless steel
Product Attributes - Muffler Color: Black
Product Attributes - Hardware Included: Yes
Product Attributes - Tailpipe Diameter (in.): 2.50 in.
Product Attributes - Tip Included: No
Product Attributes - Remanufactured: No
Product Attributes - Quantity: Sold as a kit.
Product Attributes - Notes: Will not fit applications with valance cutouts, staggered shocks, or convertibles. Due to variations in different manufacturers headers, modifications to the length and or angles of the intermediate pipes may be required when connecting to the header collectors.
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	flo817282
SFX Item ID	4984267
Supplier Item Code	4984267
Manufacturer SKU	817282
Manufacturer UPC	700042024759
Alternative References	FLM817282

Compatibility

Application Data

Application Notes	American Thunder Header Back Exhaust System; 409S Stainless Steel~Does Not Fit Convertibles~For Cars w/out Valance Cutouts, Dual; Dual Rear Exit; Incl. 2.5 in. Tubing From Trans X-Member Back/H-Pipe/Hardware/Super 44 Series(TM) Mufflers;Legal On Non-Emissions Controlled Vehicles Or For Race Use
Bed Length Inches/Centimeters	N/R, N/R
Beginning Year	1967
Body Style	Convertible
CC	4727
CID	289
Drivetrain	RWD
Ending Year	1967
Engine Family	Ford small block Windsor
Engine Size	4.7L/289
Engine Type	V8
Engine VIN Code	A
Liter	4.7
Make	FORD
Model	MUSTANG
Region	USA
Submodel	BASE
Transmission	Automatic

Application Notes	American Thunder Header Back Exhaust System; 409S Stainless Steel~Does Not Fit Convertibles~For Cars w/out Valance Cutouts, Dual; Dual Rear Exit; Incl. 2.5 in. Tubing From Trans X-Member Back/H-Pipe/Hardware/Super 44 Series(TM) Mufflers;Legal On Non-Emissions Controlled Vehicles Or For Race Use
Bed Length Inches/Centimeters	N/R, N/R
Beginning Year	1967
Body Style	Convertible
CC	4727
CID	289
Drivetrain	RWD
Ending Year	1967
Engine Family	Ford small block Windsor
Engine Size	4.7L/289
Engine Type	V8
Engine VIN Code	K
Liter	4.7
Make	FORD
Model	MUSTANG
Region	USA
Submodel	BASE
Transmission	Automatic

Application Notes	RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; U/K; Aggressive to moderate sound, Exit under the rear valance with a turn-down in the tailpipes
Bed Length Inches/Centimeters	N/R, N/R
Beginning Year	1967
Body Style	Convertible
CC	4727
CID	289
Drivetrain	RWD
Ending Year	1967
Engine Family	Ford small block Windsor
Engine Size	4.7L/289
Engine Type	V8
Engine VIN Code	A
Liter	4.7
Make	FORD
Model	MUSTANG
Region	USA
Submodel	BASE
Transmission	Automatic

Application Notes	RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; U/K; Aggressive to moderate sound, Exit under the rear valance with a turn-down in the tailpipes
Bed Length Inches/Centimeters	N/R, N/R
Beginning Year	1967
Body Style	Convertible
CC	4727
CID	289
Drivetrain	RWD
Ending Year	1967
Engine Family	Ford small block Windsor
Engine Size	4.7L/289
Engine Type	V8
Engine VIN Code	K
Liter	4.7
Make	FORD
Model	MUSTANG
Region	USA
Submodel	BASE
Transmission	Automatic

Application Notes	American Thunder Header Back Exhaust System; 409S Stainless Steel~Does Not Fit Convertibles~For Cars w/out Valance Cutouts, Dual; Dual Rear Exit; Incl. 2.5 in. Tubing From Trans X-Member Back/H-Pipe/Hardware/Super 44 Series(TM) Mufflers;Legal On Non-Emissions Controlled Vehicles Or For Race Use
Bed Length Inches/Centimeters	N/R, N/R
Beginning Year	1967
Body Style	Convertible
CC	4727
CID	289
Drivetrain	RWD
Ending Year	1967
Engine Family	Ford small block Windsor
Engine Size	4.7L/289
Engine Type	V8
Engine VIN Code	A
Liter	4.7
Make	FORD
Model	MUSTANG
Region	USA
Submodel	BASE
Transmission	Manual

Application Notes	American Thunder Header Back Exhaust System; 409S Stainless Steel~Does Not Fit Convertibles~For Cars w/out Valance Cutouts, Dual; Dual Rear Exit; Incl. 2.5 in. Tubing From Trans X-Member Back/H-Pipe/Hardware/Super 44 Series(TM) Mufflers;Legal On Non-Emissions Controlled Vehicles Or For Race Use
Bed Length Inches/Centimeters	N/R, N/R
Beginning Year	1967
Body Style	Convertible
CC	4727
CID	289
Drivetrain	RWD
Ending Year	1967
Engine Family	Ford small block Windsor
Engine Size	4.7L/289
Engine Type	V8
Engine VIN Code	K
Liter	4.7
Make	FORD
Model	MUSTANG
Region	USA
Submodel	BASE
Transmission	Manual

Application Notes	RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; U/K; Aggressive to moderate sound, Exit under the rear valance with a turn-down in the tailpipes
Bed Length Inches/Centimeters	N/R, N/R
Beginning Year	1967
Body Style	Convertible
CC	4727
CID	289
Drivetrain	RWD
Ending Year	1967
Engine Family	Ford small block Windsor
Engine Size	4.7L/289
Engine Type	V8
Engine VIN Code	A
Liter	4.7
Make	FORD
Model	MUSTANG
Region	USA
Submodel	BASE
Transmission	Manual

Application Notes	RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; U/K; Aggressive to moderate sound, Exit under the rear valance with a turn-down in the tailpipes
Bed Length Inches/Centimeters	N/R, N/R
Beginning Year	1967
Body Style	Convertible
CC	4727
CID	289
Drivetrain	RWD
Ending Year	1967
Engine Family	Ford small block Windsor
Engine Size	4.7L/289
Engine Type	V8
Engine VIN Code	K
Liter	4.7
Make	FORD
Model	MUSTANG
Region	USA
Submodel	BASE
Transmission	Manual

Application Notes	American Thunder Header Back Exhaust System; 409S Stainless Steel~Does Not Fit Convertibles~For Cars w/out Valance Cutouts, Dual; Dual Rear Exit; Incl. 2.5 in. Tubing From Trans X-Member Back/H-Pipe/Hardware/Super 44 Series(TM) Mufflers;Legal On Non-Emissions Controlled Vehicles Or For Race Use
Bed Length Inches/Centimeters	N/R, N/R
Beginning Year	1967
Body Style	Fastback
CC	4727
CID	289
Drivetrain	RWD
Ending Year	1967
Engine Family	Ford small block Windsor
Engine Size	4.7L/289
Engine Type	V8
Engine VIN Code	A
Liter	4.7
Make	FORD
Model	MUSTANG
Region	USA
Submodel	BASE
Transmission	Automatic

Application Notes	American Thunder Header Back Exhaust System; 409S Stainless Steel~Does Not Fit Convertibles~For Cars w/out Valance Cutouts, Dual; Dual Rear Exit; Incl. 2.5 in. Tubing From Trans X-Member Back/H-Pipe/Hardware/Super 44 Series(TM) Mufflers;Legal On Non-Emissions Controlled Vehicles Or For Race Use
Bed Length Inches/Centimeters	N/R, N/R
Beginning Year	1967
Body Style	Fastback
CC	4727
CID	289
Drivetrain	RWD
Ending Year	1967
Engine Family	Ford small block Windsor
Engine Size	4.7L/289
Engine Type	V8
Engine VIN Code	K
Liter	4.7
Make	FORD
Model	MUSTANG
Region	USA
Submodel	BASE
Transmission	Automatic

Application Notes	RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; U/K; Aggressive to moderate sound, Exit under the rear valance with a turn-down in the tailpipes
Bed Length Inches/Centimeters	N/R, N/R
Beginning Year	1967
Body Style	Fastback
CC	4727
CID	289
Drivetrain	RWD
Ending Year	1967
Engine Family	Ford small block Windsor
Engine Size	4.7L/289
Engine Type	V8
Engine VIN Code	A
Liter	4.7
Make	FORD
Model	MUSTANG
Region	USA
Submodel	BASE
Transmission	Automatic

Application Notes	RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; U/K; Aggressive to moderate sound, Exit under the rear valance with a turn-down in the tailpipes
Bed Length Inches/Centimeters	N/R, N/R
Beginning Year	1967
Body Style	Fastback
CC	4727
CID	289
Drivetrain	RWD
Ending Year	1967
Engine Family	Ford small block Windsor
Engine Size	4.7L/289
Engine Type	V8
Engine VIN Code	K
Liter	4.7
Make	FORD
Model	MUSTANG
Region	USA
Submodel	BASE
Transmission	Automatic

Application Notes	American Thunder Header Back Exhaust System; 409S Stainless Steel~Does Not Fit Convertibles~For Cars w/out Valance Cutouts, Dual; Dual Rear Exit; Incl. 2.5 in. Tubing From Trans X-Member Back/H-Pipe/Hardware/Super 44 Series(TM) Mufflers;Legal On Non-Emissions Controlled Vehicles Or For Race Use
Bed Length Inches/Centimeters	N/R, N/R
Beginning Year	1967
Body Style	Fastback
CC	4727
CID	289
Drivetrain	RWD
Ending Year	1967
Engine Family	Ford small block Windsor
Engine Size	4.7L/289
Engine Type	V8
Engine VIN Code	A
Liter	4.7
Make	FORD
Model	MUSTANG
Region	USA
Submodel	BASE
Transmission	Manual

Application Notes	American Thunder Header Back Exhaust System; 409S Stainless Steel~Does Not Fit Convertibles~For Cars w/out Valance Cutouts, Dual; Dual Rear Exit; Incl. 2.5 in. Tubing From Trans X-Member Back/H-Pipe/Hardware/Super 44 Series(TM) Mufflers;Legal On Non-Emissions Controlled Vehicles Or For Race Use
Bed Length Inches/Centimeters	N/R, N/R
Beginning Year	1967
Body Style	Fastback
CC	4727
CID	289
Drivetrain	RWD
Ending Year	1967
Engine Family	Ford small block Windsor
Engine Size	4.7L/289
Engine Type	V8
Engine VIN Code	K
Liter	4.7
Make	FORD
Model	MUSTANG
Region	USA
Submodel	BASE
Transmission	Manual

Application Notes	RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; U/K; Aggressive to moderate sound, Exit under the rear valance with a turn-down in the tailpipes
Bed Length Inches/Centimeters	N/R, N/R
Beginning Year	1967
Body Style	Fastback
CC	4727
CID	289
Drivetrain	RWD
Ending Year	1967
Engine Family	Ford small block Windsor
Engine Size	4.7L/289
Engine Type	V8
Engine VIN Code	A
Liter	4.7
Make	FORD
Model	MUSTANG
Region	USA
Submodel	BASE
Transmission	Manual

Application Notes	RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; U/K; Aggressive to moderate sound, Exit under the rear valance with a turn-down in the tailpipes
Bed Length Inches/Centimeters	N/R, N/R
Beginning Year	1967
Body Style	Fastback
CC	4727
CID	289
Drivetrain	RWD
Ending Year	1967
Engine Family	Ford small block Windsor
Engine Size	4.7L/289
Engine Type	V8
Engine VIN Code	K
Liter	4.7
Make	FORD
Model	MUSTANG
Region	USA
Submodel	BASE
Transmission	Manual

Application Notes	American Thunder Header Back Exhaust System; 409S Stainless Steel~Does Not Fit Convertibles~For Cars w/out Valance Cutouts, Dual; Dual Rear Exit; Incl. 2.5 in. Tubing From Trans X-Member Back/H-Pipe/Hardware/Super 44 Series(TM) Mufflers;Legal On Non-Emissions Controlled Vehicles Or For Race Use
Bed Length Inches/Centimeters	N/R, N/R
Beginning Year	1967
Body Style	Hardtop
CC	4727
CID	289
Drivetrain	RWD
Ending Year	1967
Engine Family	Ford small block Windsor
Engine Size	4.7L/289
Engine Type	V8
Engine VIN Code	A
Liter	4.7
Make	FORD
Model	MUSTANG
Region	USA
Submodel	BASE
Transmission	Automatic

Application Notes	American Thunder Header Back Exhaust System; 409S Stainless Steel~Does Not Fit Convertibles~For Cars w/out Valance Cutouts, Dual; Dual Rear Exit; Incl. 2.5 in. Tubing From Trans X-Member Back/H-Pipe/Hardware/Super 44 Series(TM) Mufflers;Legal On Non-Emissions Controlled Vehicles Or For Race Use
Bed Length Inches/Centimeters	N/R, N/R
Beginning Year	1967
Body Style	Hardtop
CC	4727
CID	289
Drivetrain	RWD
Ending Year	1967
Engine Family	Ford small block Windsor
Engine Size	4.7L/289
Engine Type	V8
Engine VIN Code	K
Liter	4.7
Make	FORD
Model	MUSTANG
Region	USA
Submodel	BASE
Transmission	Automatic

Application Notes	RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; U/K; Aggressive to moderate sound, Exit under the rear valance with a turn-down in the tailpipes
Bed Length Inches/Centimeters	N/R, N/R
Beginning Year	1967
Body Style	Hardtop
CC	4727
CID	289
Drivetrain	RWD
Ending Year	1967
Engine Family	Ford small block Windsor
Engine Size	4.7L/289
Engine Type	V8
Engine VIN Code	A
Liter	4.7
Make	FORD
Model	MUSTANG
Region	USA
Submodel	BASE
Transmission	Automatic

Application Notes	RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; U/K; Aggressive to moderate sound, Exit under the rear valance with a turn-down in the tailpipes
Bed Length Inches/Centimeters	N/R, N/R
Beginning Year	1967
Body Style	Hardtop
CC	4727
CID	289
Drivetrain	RWD
Ending Year	1967
Engine Family	Ford small block Windsor
Engine Size	4.7L/289
Engine Type	V8
Engine VIN Code	K
Liter	4.7
Make	FORD
Model	MUSTANG
Region	USA
Submodel	BASE
Transmission	Automatic

Application Notes	American Thunder Header Back Exhaust System; 409S Stainless Steel~Does Not Fit Convertibles~For Cars w/out Valance Cutouts, Dual; Dual Rear Exit; Incl. 2.5 in. Tubing From Trans X-Member Back/H-Pipe/Hardware/Super 44 Series(TM) Mufflers;Legal On Non-Emissions Controlled Vehicles Or For Race Use
Bed Length Inches/Centimeters	N/R, N/R
Beginning Year	1967
Body Style	Hardtop
CC	4727
CID	289
Drivetrain	RWD
Ending Year	1967
Engine Family	Ford small block Windsor
Engine Size	4.7L/289
Engine Type	V8
Engine VIN Code	A
Liter	4.7
Make	FORD
Model	MUSTANG
Region	USA
Submodel	BASE
Transmission	Manual

Application Notes	American Thunder Header Back Exhaust System; 409S Stainless Steel~Does Not Fit Convertibles~For Cars w/out Valance Cutouts, Dual; Dual Rear Exit; Incl. 2.5 in. Tubing From Trans X-Member Back/H-Pipe/Hardware/Super 44 Series(TM) Mufflers;Legal On Non-Emissions Controlled Vehicles Or For Race Use
Bed Length Inches/Centimeters	N/R, N/R
Beginning Year	1967
Body Style	Hardtop
CC	4727
CID	289
Drivetrain	RWD
Ending Year	1967
Engine Family	Ford small block Windsor
Engine Size	4.7L/289
Engine Type	V8
Engine VIN Code	K
Liter	4.7
Make	FORD
Model	MUSTANG
Region	USA
Submodel	BASE
Transmission	Manual

Application Notes	RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; U/K; Aggressive to moderate sound, Exit under the rear valance with a turn-down in the tailpipes
Bed Length Inches/Centimeters	N/R, N/R
Beginning Year	1967
Body Style	Hardtop
CC	4727
CID	289
Drivetrain	RWD
Ending Year	1967
Engine Family	Ford small block Windsor
Engine Size	4.7L/289
Engine Type	V8
Engine VIN Code	A
Liter	4.7
Make	FORD
Model	MUSTANG
Region	USA
Submodel	BASE
Transmission	Manual

Application Notes	RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; U/K; Aggressive to moderate sound, Exit under the rear valance with a turn-down in the tailpipes
Bed Length Inches/Centimeters	N/R, N/R
Beginning Year	1967
Body Style	Hardtop
CC	4727
CID	289
Drivetrain	RWD
Ending Year	1967
Engine Family	Ford small block Windsor
Engine Size	4.7L/289
Engine Type	V8
Engine VIN Code	K
Liter	4.7
Make	FORD
Model	MUSTANG
Region	USA
Submodel	BASE
Transmission	Manual

Application Notes	American Thunder Header Back Exhaust System; 409S Stainless Steel~Does Not Fit Convertibles~For Cars w/out Valance Cutouts, Dual; Dual Rear Exit; Incl. 2.5 in. Tubing From Trans X-Member Back/H-Pipe/Hardware/Super 44 Series(TM) Mufflers;Legal On Non-Emissions Controlled Vehicles Or For Race Use
Bed Length Inches/Centimeters	N/R, N/R
Beginning Year	1967
Body Style	Convertible
CC	4727
CID	289
Drivetrain	RWD
Ending Year	1968
Engine Family	Ford small block Windsor
Engine Size	4.7L/289
Engine Type	V8
Engine VIN Code	C
Liter	4.7
Make	FORD
Model	MUSTANG
Region	USA
Submodel	BASE
Transmission	Automatic

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Flowmaster Stainless Steel American Thunder Exhaust Systems for 1967-1970 MUSTANG - 817282 System, Thunder, Header-back, Dual, Stainless, Split Rear Exit, Ford, Kit

Flowmaster Stainless Steel American Thunder Exhaust Systems for 1967-1970 MUSTANG - 817282 System, Thunder, Header-back, Dual, Stainless, Split Rear Exit, Ford, Kit

Description

Part Type

Specifications

Reference Information

Compatibility

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