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Flowmaster®
817412 American Thunder Series Header-Back Exhaust System, Made of Stainless Steel

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$740.95
$915.00Save: $174.05(19%)
Manufacturer #817412
Vehicle Info Required to Guarantee FitAdd Vehicle
Qty:
1

Highlights

Part:
Exhaust System
Brand:
Flowmaster
Notes:
Includes Super 40 Series Muffler
Material:
Made of Stainless Steel
Series:
American Thunder Series
System Type:
Header-Back
Quantity Sold:
Kit
Warranty:
Lifetime Flowmaster Limited Warranty
Prop 65 Warning:

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Exit Location:
Exit: Split Rear
Main Piping Diameter:
2.5 in. Main Pipe
Product Fit:
Direct Fit
Recommended Use:
OE Upgrade
Why Buy:
Aggressive Tone Chambered Muffler

Vehicle Fitment Information

Vehicle Name
Submodel
Engine
Fitment Information
1964 Buick LeSabre
Base
8 Cyl 7.0L
-
1964 Buick LeSabre
Base
8 Cyl 6.6L
-
1964-1965 Buick LeSabre
Base
8 Cyl 4.9L
-
1964-1966 Oldsmobile F85
Deluxe
8 Cyl 5.4L
-
1964-1966 Pontiac GTO
Base
8 Cyl 6.4L
-
Page 1 of 8 | Showing 1 - 5 of 38 results

Product Information

FLOWMASTER AMERICAN THUNDER AGGRESSIVE TONE CHAMBERED MUFFLER EXHAUST SYSTEMS

Flowmaster’s American Thunder aggressive tone chambered muffler exhaust systems include mandrel-bent steel tubing and a chambered muffler that’s fine-tuned to deliver improved torque, horsepower and gas mileage, plus the moderately aggressive rumble you crave for your street machine. Flowmaster, known as ‘the exhaust technology company,’ is a leading manufacturer of performance exhaust systems, respected for their design, innovation and engineering.

  • MADE IN USA
  • Offered in aluminized or stainless steel
  • Chambered muffler fine-tunes exhaust tone to moderately aggressive rumble
  • Mandrel-bent tubing allows for continuous airflow
  • Quick and easy installation
  • Direct fit by vehicle year, make and model
  • Proven to improve torque, throttle response, horsepower and fuel economy by rigorous dyno testing
Need help?Call our product expert1-866-529-0412
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Warranty Policy
Right parts, guaranteed. If you find any defects, let us know within 60 days and we’ll take care of it. Check out our Warranty Policy for more details.
Shipping Policy
We ship fast so you can get on the road that much faster. Check out our Shipping Policy for more details.
Easy Return Policy
We’re only happy if you’re happy. If you’re not entirely satisfied with your order, you may be entitled to a refund. Check out our Return Policy for more details.

Product Q&A

0
What type of headers would you recommend for this exhaust system. 1967 chevy chevelle 396 cu 6spd man buckets p steering and disc's 4 corners ? .Jerry F.Dec 31, 2023
Best Answer:Hi Jerry, I'm glad to assist you. The matching set of headers for this vehicle (and exhaust system) is part number F3111030, by the Flowtech brand. Grab our sale price and click the link below to buy it today. Happy shopping! <a href="https://www.carparts.com/details/Chevrolet/Chevelle/Flowtech/Headers/1967/Base/8_Cyl_6-dot-5L/F3111030.html?can=cpje1043_CSQA_20231231" target="_blank">https://www.carparts.com/details/Chevrolet/Chevelle/Flowtech/Headers/1967/Base/8_Cyl_6-dot-5L/F3111030.html?can=cpje1043_CSQA_20231231</a>
Jeonino E.STAFFJan 01, 2024
0
Does this kit come with hangers?Doug M.Jun 14, 2021
Best Answer:Hi Doug, I'm glad to help you out. No, the hangers are not included. It will come as to how you see it in the picture. I hope this helps, and if you're interested in this exhaust system, you can click on the link below to easily order and take advantage of our ongoing sale and limited stocks. Happy shopping. <a href="https://www.carparts.com/exhaust-system/flowmaster/f13817412?can=CPGG4850" target="_blank">https://www.carparts.com/exhaust-system/flowmaster/f13817412?can=CPGG4850</a>
Grace G.STAFFJun 14, 2021