Home / Shop / Flowmaster Stainless Steel American Thunder Exhaust Systems for 1968 CHEVY II, 1969-1973 NOVA, 1971-1974 VENTURA - 817158 System, Header-Back, Steel, 2.5 in. Diameter, Buick, Chevy, Oldsmobile, Pontiac, Kit

Flowmaster Stainless Steel American Thunder Exhaust Systems for 1968 CHEVY II, 1969-1973 NOVA, 1971-1974 VENTURA - 817158 System, Header-Back, Steel, 2.5 in. Diameter, Buick, Chevy, Oldsmobile, Pontiac, Kit

SKU: FLO817158

Exhaust Systems

Flowmaster

Flowmaster Stainless Steel American Thunder Exhaust Systems for 1968 CHEVY II, 1969-1973 NOVA, 1971-1974 VENTURA - 817158 System, Header-Back, Steel, 2.5 in. Diameter, Buick, Chevy, Oldsmobile, Pontiac, Kit

SKU: FLO817158

Exhaust Systems

LOW STOCK! Est Ship 4-7 days. HURRY! LOW STOCK. This item is in limited stock at one of our distribution centres. The ETA is the approximate time required to prepare your order for dispatch.

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Description

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

American Thunder Kit 68-74 Nova

Data: v4.2 - Upd: 2026-10-16 04:09:17

Specifications

Product Attributes - Brand: Flowmaster
Product Attributes - Manufacturer's Part Number: 817158
Product Attributes - Part Type: Exhaust Systems
Product Attributes - Product Line: Flowmaster Stainless Steel American Thunder Exhaust Systems
Product Attributes - UPC: 700042025626
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 Finish: 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 - 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	flo817158
SFX Item ID	4983963
Supplier Item Code	4983963
Manufacturer SKU	817158
Manufacturer UPC	700042025626
Alternative References	FLM817158

Compatibility

Application Data

Make	PONTIAC
Model	VENTURA
Submodel	CUSTOM
Beginning Year	1974
Ending Year	1974
Engine Type	L6
Liter	4.1
CID	250
CC	5733
Engine Size	4.1L/250
Engine Family	Buick V8
Drivetrain	RWD
Application Notes	RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; U/K; 2.50 inch Stainless Steel Pipes, Aggressive to moderate sound
Region	United States (USA)
Body Style	Hatchback
Transmission	Automatic
Engine VIN Code	K

Make	PONTIAC
Model	VENTURA
Submodel	CUSTOM
Beginning Year	1974
Ending Year	1974
Engine Type	L6
Liter	4.1
CID	250
CC	5733
Engine Size	4.1L/250
Engine Family	Buick V8
Drivetrain	RWD
Application Notes	RWD; U/K
Region	United States (USA)
Body Style	Hatchback
Transmission	Automatic
Engine VIN Code	A

Make	PONTIAC
Model	VENTURA
Submodel	CUSTOM
Beginning Year	1974
Ending Year	1974
Engine Type	V8
Liter	7.4
CID	454
CC	5733
Engine Size	7.4L/454
Engine Family	Buick V8
Drivetrain	RWD
Application Notes	RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; Transmission; 2.50 inch Stainless Steel Pipes, Aggressive to moderate sound
Region	United States (USA)
Body Style	Hatchback
Transmission	Automatic
Engine VIN Code	B

Make	PONTIAC
Model	VENTURA
Submodel	CUSTOM
Beginning Year	1974
Ending Year	1974
Engine Type	V8
Liter	5.0
CID	307
CC	5733
Engine Size	5.0L/307
Engine Family	Buick V8
Drivetrain	RWD
Application Notes	RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; Transmission; 2.50 inch Stainless Steel Pipes, Aggressive to moderate sound
Region	United States (USA)
Body Style	Hatchback
Transmission	Automatic
Engine VIN Code	A

Make	PONTIAC
Model	VENTURA
Submodel	CUSTOM
Beginning Year	1974
Ending Year	1974
Engine Type	V8
Liter	5.7
CID	350
CC	5733
Engine Size	5.7L/350
Engine Family	Buick V8
Drivetrain	RWD
Application Notes	RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; Transmission; 2.50 inch Stainless Steel Pipes, Aggressive to moderate sound
Region	United States (USA)
Body Style	Hatchback
Transmission	Automatic
Engine VIN Code	B

Make	PONTIAC
Model	VENTURA
Submodel	CUSTOM
Beginning Year	1974
Ending Year	1974
Engine Type	V8
Liter	5.7
CID	350
CC	5733
Engine Size	5.7L/350
Engine Family	Buick V8
Drivetrain	RWD
Application Notes	RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; U/K; 2.50 inch Stainless Steel Pipes, Aggressive to moderate sound
Region	United States (USA)
Body Style	Hatchback
Transmission	Manual
Engine VIN Code	K

Make	PONTIAC
Model	VENTURA
Submodel	CUSTOM
Beginning Year	1974
Ending Year	1974
Engine Type	L6
Liter	4.1
CID	250
Engine Size	4.1L/250
Engine Family	Buick V8
Drivetrain	RWD
Application Notes	RWD; U/K
Region	United States (USA)
CC	4097
Body Style	Hatchback
Transmission	Manual
Engine VIN Code	A

Make	PONTIAC
Model	VENTURA
Submodel	CUSTOM
Beginning Year	1974
Ending Year	1974
Engine Type	L6
Liter	4.1
CID	250
CC	4098
Engine Size	4.1L/250
Engine Family	Buick V8
Drivetrain	RWD
Application Notes	RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; Transmission; 2.50 inch Stainless Steel Pipes, Aggressive to moderate sound
Region	United States (USA)
Body Style	Hatchback
Transmission	Manual
Engine VIN Code	N

Make	PONTIAC
Model	VENTURA
Submodel	GTO
Beginning Year	1974
Ending Year	1974
Engine Type	L6
Liter	4.1
CID	250
CC	4098
Engine Size	4.1L/250
Engine Family	Buick V8
Drivetrain	RWD
Application Notes	American Thunder Header Back Exhaust System; Dual; Dual Rear Exit; Incl. 2.5 in. Tubing/Super 44 Series(TM) Mufflers; 409 Stainless Steel;Legal On Non-Emissions Controlled Vehicles Or For Race Use
Region	United States (USA)
Body Style	Hatchback
Transmission	Manual
Engine VIN Code	A

Make	PONTIAC
Model	VENTURA
Submodel	GTO
Beginning Year	1974
Ending Year	1974
Engine Type	L6
Liter	4.1
CID	250
CC	4098
Engine Size	4.1L/250
Engine Family	Buick V8
Drivetrain	RWD
Application Notes	RWD; Transmission
Region	United States (USA)
Body Style	Hatchback
Transmission	Manual
Engine VIN Code	B

Make	PONTIAC
Model	VENTURA
Submodel	GTO
Beginning Year	1974
Ending Year	1974
Engine Type	V8
Liter	5.7
CID	350
CC	5733
Engine Size	5.7L/350
Engine Family	Buick V8
Body Style	Hatchback
Transmission	Manual
Drivetrain	RWD
Application Notes	RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; U/K; 2.50 inch Stainless Steel Pipes, Aggressive to moderate sound
Region	United States (USA)
Engine VIN Code	K

Make	PONTIAC
Model	VENTURA
Submodel	GTO
Beginning Year	1974
Ending Year	1974
Engine Type	V8
Liter	5.7
CID	350
CC	5733
Engine Size	5.7L/350
Engine Family	Buick V8
Body Style	Hatchback
Transmission	Manual
Drivetrain	RWD
Application Notes	American Thunder Header Back Exhaust System; Dual; Dual Rear Exit; Incl. 2.5 in. Tubing/Super 44 Series(TM) Mufflers; 409 Stainless Steel;Legal On Non-Emissions Controlled Vehicles Or For Race Use
Region	United States (USA)
Engine VIN Code	A

Make	PONTIAC
Model	VENTURA
Submodel	GTO
Beginning Year	1974
Ending Year	1974
Engine Type	V8
Liter	5.7
CID	350
CC	5733
Engine Size	5.7L/350
Engine Family	Buick V8
Body Style	Hatchback
Transmission	Manual
Drivetrain	RWD
Application Notes	American Thunder Header Back Exhaust System; Dual; Dual Rear Exit; Incl. 2.5 in. Tubing/Super 44 Series(TM) Mufflers; 409 Stainless Steel;Legal On Non-Emissions Controlled Vehicles Or For Race Use
Region	United States (USA)
Engine VIN Code	B

Make	PONTIAC
Model	VENTURA
Submodel	GTO
Beginning Year	1974
Ending Year	1974
Engine Type	L6
Liter	5.7
CID	350
CC	5733
Engine Size	5.7L/350
Engine Family	Buick V8
Body Style	Hatchback
Transmission	Manual
Drivetrain	RWD
Application Notes	American Thunder Header Back Exhaust System; Dual; Dual Rear Exit; Incl. 2.5 in. Tubing/Super 44 Series(TM) Mufflers; 409 Stainless Steel;Legal On Non-Emissions Controlled Vehicles Or For Race Use
Region	United States (USA)
Engine VIN Code	A

Make	PONTIAC
Model	VENTURA
Submodel	GTO
Beginning Year	1974
Ending Year	1974
Engine Type	L6
Liter	5.7
CID	350
CC	5733
Engine Size	5.7L/350
Engine Family	Buick V8
Body Style	Hatchback
Transmission	Manual
Drivetrain	RWD
Application Notes	RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; Transmission; 2.50 inch Stainless Steel Pipes, Aggressive to moderate sound
Region	United States (USA)
Engine VIN Code	B

Make	PONTIAC
Model	VENTURA
Submodel	GTO
Beginning Year	1974
Ending Year	1974
Engine Type	L6
Liter	5.7
CID	350
CC	4097
Engine Size	5.7L/350
Engine Family	Buick V8
Body Style	Hatchback
Transmission	Automatic
Drivetrain	RWD
Application Notes	RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; U/K; 2.50 inch Stainless Steel Pipes, Aggressive to moderate sound
Region	United States (USA)
Engine VIN Code	K

Make	PONTIAC
Model	VENTURA
Submodel	GTO
Beginning Year	1974
Ending Year	1974
Engine Type	L6
Liter	5.7
CID	350
CC	5733
Engine Size	5.7L/350
Engine Family	Buick V8
Body Style	Hatchback
Transmission	Automatic
Drivetrain	RWD
Application Notes	American Thunder Header Back Exhaust System; Dual; Dual Rear Exit; Incl. 2.5 in. Tubing/Super 44 Series(TM) Mufflers; 409 Stainless Steel;Legal On Non-Emissions Controlled Vehicles Or For Race Use
Region	United States (USA)
Engine VIN Code	N

Make	PONTIAC
Model	VENTURA
Submodel	GTO
Beginning Year	1974
Ending Year	1974
Engine Type	L6
Liter	5.7
CID	350
CC	5733
Engine Size	5.7L/350
Engine Family	Buick V8
Body Style	Hatchback
Transmission	Automatic
Drivetrain	RWD
Application Notes	American Thunder Header Back Exhaust System; Dual; Dual Rear Exit; Incl. 2.5 in. Tubing/Super 44 Series(TM) Mufflers; 409 Stainless Steel;Legal On Non-Emissions Controlled Vehicles Or For Race Use
Region	United States (USA)
Engine VIN Code	N

Make	PONTIAC
Model	VENTURA
Submodel	GTO
Beginning Year	1974
Ending Year	1974
Engine Type	L6
Liter	5.7
CID	350
CC	5733
Engine Size	5.7L/350
Engine Family	Buick V8
Body Style	Hatchback
Transmission	Automatic
Drivetrain	RWD
Application Notes	American Thunder Header Back Exhaust System; Dual; Dual Rear Exit; Incl. 2.5 in. Tubing/Super 44 Series(TM) Mufflers; 409 Stainless Steel;Legal On Non-Emissions Controlled Vehicles Or For Race Use
Region	United States (USA)
Engine VIN Code	A

Make	PONTIAC
Model	VENTURA
Submodel	GTO
Beginning Year	1974
Ending Year	1974
Engine Type	L6
Liter	5.7
CID	350
CC	5733
Engine Size	5.7L/350
Engine Family	Buick V8
Body Style	Hatchback
Transmission	Automatic
Drivetrain	RWD
Application Notes	RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; Transmission; 2.50 inch Stainless Steel Pipes, Aggressive to moderate sound
Region	United States (USA)
Engine VIN Code	B

Make	PONTIAC
Model	VENTURA
Submodel	GTO
Beginning Year	1974
Ending Year	1974
Engine Type	L6
Liter	5.7
CID	350
CC	5733
Engine Size	5.7L/350
Engine Family	Buick V8
Body Style	Hatchback
Transmission	Manual
Drivetrain	RWD
Application Notes	RWD; U/K
Region	United States (USA)
Engine VIN Code	K

Make	PONTIAC
Model	VENTURA
Submodel	GTO
Beginning Year	1974
Ending Year	1974
Engine Type	L6
Liter	5.7
CID	350
CC	5733
Engine Size	5.7L/350
Engine Family	Buick V8
Body Style	Hatchback
Transmission	Manual
Drivetrain	RWD
Application Notes	RWD; U/K
Region	United States (USA)
Engine VIN Code	A

Make	PONTIAC
Model	VENTURA
Submodel	GTO
Beginning Year	1974
Ending Year	1974
Engine Type	L6
Liter	5.7
CID	350
CC	4098
Engine Size	5.7L/350
Engine Family	Buick V8
Body Style	Hatchback
Transmission	Manual
Drivetrain	RWD
Application Notes	American Thunder Header Back Exhaust System; Dual; Dual Rear Exit; Incl. 2.5 in. Tubing/Super 44 Series(TM) Mufflers; 409 Stainless Steel;Legal On Non-Emissions Controlled Vehicles Or For Race Use
Region	United States (USA)
Engine VIN Code	N

Make	PONTIAC
Model	VENTURA
Submodel	CUSTOM
Beginning Year	1974
Ending Year	1974
Engine Type	L6
Liter	5.7
CID	350
CC	5733
Engine Size	5.7L/350
Engine Family	Buick V8
Body Style	Hatchback
Transmission	Manual
Drivetrain	RWD
Application Notes	RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; Transmission; 2.50 inch Stainless Steel Pipes, Aggressive to moderate sound
Region	United States (USA)
Engine VIN Code	A

Make	PONTIAC
Model	VENTURA
Submodel	CUSTOM
Beginning Year	1974
Ending Year	1974
Engine Type	L6
Liter	5.7
CID	350
CC	5733
Engine Size	5.7L/350
Engine Family	Buick V8
Body Style	Hatchback
Transmission	Manual
Drivetrain	RWD
Application Notes	RWD; Transmission
Region	United States (USA)
Engine VIN Code	B

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Flowmaster Stainless Steel American Thunder Exhaust Systems for 1968 CHEVY II, 1969-1973 NOVA, 1971-1974 VENTURA - 817158 System, Header-Back, Steel, 2.5 in. Diameter, Buick, Chevy, Oldsmobile, Pontiac, Kit

Flowmaster Stainless Steel American Thunder Exhaust Systems for 1968 CHEVY II, 1969-1973 NOVA, 1971-1974 VENTURA - 817158 System, Header-Back, Steel, 2.5 in. Diameter, Buick, Chevy, Oldsmobile, Pontiac, Kit

Description

Part Type

Specifications

Reference Information

Compatibility

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