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Flowmaster 1967-1970 Ford Mustang American Thunder Header Back Exhaust System 817282

Flowmaster 1967-1970 Ford Mustang American Thunder Header Back Exhaust System 817282
Flowmaster 1967-1970 Ford Mustang American Thunder Header Back Exhaust System 817282Flowmaster 1967-1970 Ford Mustang American Thunder Header Back Exhaust System 817282Flowmaster 1967-1970 Ford Mustang American Thunder Header Back Exhaust System 817282
$1,213.99 ea
NEWARRIVING SOONEstimated Ship Date 10/16/2023 (If Ordered Today)17 available from HOLLEY PERFORMANCE PRODUCTS as of 09/23/2023
Model: 4005301
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
OVERSIZE 2
For the person who is looking for a complete Header-back dual exhaust system with an aggressive tone. These systems are mandrel bent for maximum performance and include specially selected mufflers. American Thunder systems deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation.
Features:
  • Mandrel Bent 16 Gauge 409 Stainless Tubing
  • Limited Lifetime Warranty
  • Aggressive And Powerful Exterior Exhaust Tone
  • Incl. Hangers and Hardware For Easy Installation
  • Header Back System
  • Dual Out Rear Exit
  • Dyno Tuned for Maximum Performance
  • Premium Flowmaster Quality
Holley Performance Emission Code 5: This part is legal for sale or use 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
Installation Notes:
Does not fit convertibles, staggered shock models, or cars with exhaust cutouts in the rear valance. Does Not include header reducer cones or downpipes for factory manifolds.

About Flowmaster

Manufacturer of performance exhaust systems, mufflers, performance air intakes, turbo boost modules, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV’s, classic muscle cars, powersports vehicles and more. Flowmaster® gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive “laminar-flow” mufflers and a new line of FlowFX “straight-through” performance mufflers, along with 5 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels. Since 1983, Flowmaster is the company you can trust, and has led the industry in offering only the best products you can buy for your vehicles.

Downloads:

Download Name File Size
fm_warranty_general.pdf88.58KB
FM_Warranty_General.pdf88.58KB
NAFTA_COO-2013.pdf105.94KB
817282.pdf1.06MB
817282_instructions.pdf4.27MB

Videos:

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Submodel Years Engine Fitment Notes
Ford Mustang Base 1967 6.4L / 390 / V8
4.7L / 289 / V8
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
409S Stainless Steel~Does Not Fit Convertibles~For Cars w/out Valance Cutouts
Ford Mustang Base 1968 7.0L / 428 / V8
7.0L / 427 / V8
6.4L / 390 / V8
4.7L / 289 / V8
5.0L / 302 / V8
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
409S Stainless Steel~Does Not Fit Convertibles~For Cars w/out Valance Cutouts
Ford Mustang Base 1969 7.0L / 429 / V8
7.0L / 428 / V8
6.4L / 390 / V8
5.0L / 302 / V8
5.8L / 351 / V8
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
409S Stainless Steel~Does Not Fit Convertibles~For Cars w/out Valance Cutouts
Ford Mustang Base 1970 7.0L / 429 / V8
7.0L / 428 / V8
5.0L / 302 / V8
5.8L / 351 / V8
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
409S Stainless Steel~Does Not Fit Convertibles~For Cars w/out Valance Cutouts
Ford Mustang Boss 302 1970 5.0L / 302 / V8 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
409S Stainless Steel~Does Not Fit Convertibles~For Cars w/out Valance Cutouts
Ford Mustang Boss 429 1969 7.0L / 429 / V8 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
409S Stainless Steel~Does Not Fit Convertibles~For Cars w/out Valance Cutouts
Ford Mustang Grande 1970 7.0L / 429 / V8
7.0L / 428 / V8
5.0L / 302 / V8
5.8L / 351 / V8
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
409S Stainless Steel~Does Not Fit Convertibles~For Cars w/out Valance Cutouts
Ford Mustang Mach 1 1970 7.0L / 429 / V8
7.0L / 428 / V8
5.0L / 302 / V8
5.8L / 351 / V8
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
409S Stainless Steel~Does Not Fit Convertibles~For Cars w/out Valance Cutouts

Specifications:

2WD/4WD 2WD
California Proposition 65 Chemical Name Chromium (hexavalent compounds)
California Proposition 65 Chemical Name 1 Nickel (Metallic)
California Proposition 65 Chemical Name 2 Chromium (hexavalent compounds)
California Proposition 65 Required Yes
Emission Code 5
Exhaust Series American Thunder
Exhaust Type Dual
Exit Position Dual Rear
Exit Style Straight
Heat Shield No
Heat Shield Attached No
Inlet Diameter 2.500 in.
Inlet Diameter (in) 2.5
Inlet Inside Diameter 2.500 in.
Material Stainless Steel
Muffler Count 2
Muffler Part Number Kit Only
Muffler Quantity 2
Muffler Series Super 44 Series
Outlet Diameter 2.500 in.
Outlet Diameter (in) 2.5
Outlet Outside Diameter 2.500 in.
Part Type Exhaust System Kit
Single Dual Dual
Single or Dual Dual
Sound Level Aggressive
System Type Header Back
Tail Pipe Diameter 2.500 in.
Tip Diameter N/A
Tubing Diameter 2.500 in.
Tubing Diameter (in) 2.5
WARNING CA Proposition 65 WARNING: Cancer and Reproductive Harm
Warranty Limited Lifetime (Lifetime)

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