Skip to main content
2
Images
Videos
Flowmaster

Flowmaster 817937 American Thunder Crossmember-Back Exhaust 2.5" 409 Stainless Dual Exit

Compatible with 1963-1966 Chevrolet/GMC C10/C1000 2WD Short/Long Bed V8 Truck

Part # 817937

Flowmaster 817937 American Thunder Crossmember-Back Exhaust 2.5" 409 Stainless Dual Exit

In Stock
Free Shipping
$815.95
Add to Wishlist
Starting at $72 a month with Learn More
Does it fit my vehicle?
3

Emissions

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles and Racing Use Only Vehicles.

See Emissions Details
This American Thunder exhaust system is specifically designed for 1963-1966 Chevrolet C10 and GMC 1000 series 2-wheel drive, non X-Frame V8 trucks without the torsion bar front suspension. The system is perfect for the person looking for an aggressive to moderate exterior and interior sound level. Starting just after a set of headers, this exhaust system comes complete with a built-in H-pipe crossover and all mandrel bent 2.50-inch 409 stainless steel tubing that helps maximize the flow of the exhaust pulses for better performance and the added durability of stainless steel. The Super 44 Series performance mufflers will give any V8 a deep rumble with that classic Flowmaster tone. This system comes with your choice of three tailpipe exits, straight out the rear, side exit behind each rear tire, or dumped behind the rear tires. The system includes all hardware necessary for an at home installation. This exhaust system is covered by our Lifetime Limited Warranty. Fits both short and long wheelbase trucks.

Features:

  • 3 Exit Options Allow You to Customize the Look of Your Truck
  • 2.5-Inch Mandrel Bent Tubing Improves Exhaust Flow for Better Performance
  • Super 44 Series Mufflers Give You a Deep, Classic Muscle Truck Sound
  • H-Pipe Style Crossover Pipe Improves Performance and Reduces Interior Sound
  • Includes all Necessary Hangers and Hardware for an at Home Installation
  • 409 Stainless Steel Construction adds Corrosion Resistance and Durability
  • Fits both Short Bed and Long Bed Trucks
  • Backed by Flowmaster’s Lifetime Limited Warranty
Brand Flowmaster
Diameter2.5"
Emission Code3
5
Material409 Stainless Steel
Product TypeHeader-Back Exhaust Systems
UPC090127100523
Manufacturer Part Number817937
Part Number817937
3

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles and Racing Use Only Vehicles.

The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition and that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

The following vehicles are considered Emissions Controlled Vehicles:

  • 1966 and newer U.S. manufactured California Certified vehicles
  • 1968 and newer U.S. manufactured Federally Certified vehicles
  • 1968 and newer Foreign manufactured vehicle
Instructions for Part # 817937
Fits Both Long And Short Wheelbases Does Not Fit Trucks with Torsion Bar Front Suspension or X-Frames

We Suggest

*Free Shipping & Handling only offered to the contiguous US on orders over $149, excludes clearance parts and oversized packages.

Some parts are not legal for use in California or other states with similar regulations.