Order Status & Returns
Gift Cards
Help Center
1-800-345-4545
Vehicle Info NeededFLOWMASTERPART NUMBER: 389-817934
817934 American Thunder Crossmember-Back Exhaust System 1967-1972 Ford F-100/250/350 Pickup Truck V8
$79995
Ships on 10/29/2026
Lowest Price GuaranteeFord
American Thunder Crossmember-Back Exhaust System1967-72 Ford F-100/250/350 Pickup Truck 2WD V8 Fits Long Bed Only, with Side Fuel Tank 2.500 in. Tubing Dual Out Rear/Side/Dumped Exit Super 44 Series Mufflers 409S Stainless Steel
Flowmaster 817934
Features:
- Aggressive to moderate exterior and interior sound level
- Mandrel-bent tubing with built-in H-pipe crossover pipe
- (3) different tailpipe exhaust exit options for a customized appearance - straight, side exit behind each rear tire, or dumped behind the rear tires
- Muffler Dimensions: Body length: 13.250 in., Overall length: 19.500 in.
Notes:
- Fits 2WD long bed (131 in. wheelbase) only with factory auxiliary fuel tank
- Exhaust tips are NOT included
- Connector pipes for factory manifolds or headers are NOT included
Emissions: This part is legal for sale or uses on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.
Part TypeExhaust System
BrandFLOWMASTER
Package Height15.25
Package Width16.0
Package Length63.5
Weight92.0 PG
Tailpipe Diameter (In.)2.5
Muffler Inlet Inside Diameter2.50 in.
Hangers IncludedYes
Main Piping Diameter2.50 in.
Tail Pipe QuantityDual
Inlet TypeClamp-On
Catalytic Converter Quantity0
Exit LocationRear
Muffler Body Length13.25 in.
Sound LevelAggressive / Moderate
Muffler Material409S Stainless Steel
Muffler Body Material409 Stainless Steel
Gasket Or Seal IncludedNo
Pipe ColorSilver
System FinishNatural
Muffler Quantity2
Muffler Inlet Outside Diameter2.63 in.
Exit QuantityDual
Muffler Flanged OutletNo
Muffler Outlet LocationOffset
Catalytic Converter IncludedNo
Catalytic Converter(S) IncludedNo
Part CategoryPerformance Parts
Hardware IncludedYes
Exhaust Tip Quantity0
Muffler Inlet LocationCenter
Valve IncludedNo
Muffler TypeChambered
Pipe Material409 Stainless Steel
Muffler Body Width9.50 in.
Tail Pipe Tapered OutletNo
Muffler Body ShapeOval
Mounting Bracket IncludedYes
Muffler Outlet Quantity1
Muffler FinishBlack High-Temperature Paint Finish
Mount TypeUses New Hangers (Included)
Clamps IncludedYes
Muffler StyleBaffled
FinishNatural
Exit StyleDual Out Rear
Muffler Body Height4 in.
Tip IncludedNo
Clamping TypeFlat Band
Muffler Flanged InletNo
Mandrel-BentYes
Spring Bolt Kit IncludedNo
Muffler SeriesSuper 44
QuantitySold as a kit
Muffler IncludedYes
System StyleCrossmember Back
Tail Pipe Outlet Outside Diameter2.50 in.
Muffler ConfigurationCenter/Offset
System Material409S Stainless Steel
Valve TypeNot Applicable
Part FitmentDirect Fit
Vendor Part Number817934
Package Qty1
Package TypeEA
No Questions
No Reviews
Items You Need
![Microfiber Towels, Oversized [16 in. x 16 in.]](https://www.jegs.com/images/mini_200/500/555/555-80190.jpg)
![Heavy-Duty Nitrile Gloves [7 mils Thick, Large]](https://www.jegs.com/images/mini_200/500/555/555-1124.jpg)
![Penetrating Oil [11 oz. Aerosol Can]](https://www.jegs.com/images/mini_200/600/639/639-11043.jpg)
![2-Ton Low-Profile Aluminum Floor Jack [4,000 lbs. Capacity]](https://www.jegs.com/images/mini_200/500/555/555-80006.jpg)
JEGS
2-Ton Low-Profile Aluminum Floor Jack [4,000 lbs. Capacity]
Part Number : 555-80006
$20999$269.99
You Save$60.00
![Wheel Chock [Solid Rubber]](https://www.jegs.com/images/mini_200/500/555/555-w41001.jpg)
![Mechanic Chair & Step Stool on Wheels [300 lb. Capacity]](https://www.jegs.com/images/mini_200/500/555/555-81156.jpg)
JEGS
Mechanic Chair & Step Stool on Wheels [300 lb. Capacity]
Part Number : 555-81156
$9099$111.99
You Save$21.00
![Round Magnetic Parts Tray [5 1/2 in. Round]](https://www.jegs.com/images/mini_200/500/555/555-80080.jpg)
PERMATEX
Fast Orange Xtreme Professional Grade Hand Cleaner 15fl oz Rocker Cap Bottle
Part Number : 775-25616
$1299
JEGS
Copper RTV Temperature Resistant up to 700 degrees F
Part Number : 555-28038
$699$7.99
You Save$1.00
Some parts are not legal for use in California or other states with similar laws / regulations
