1999-2004 Ford Mustang Cat-back Exhaust System Flowmaster American Thunder 817312
1999-2004 Ford Mustang Cat-back Exhaust System Flowmaster American Thunder 817312
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Overview
For the person who is looking for a complete Flowmaster® cat-back dual exhaust system with an aggressive tone. With easy fit in mind, this American Thunder® exhaust system features mandrel-bent 2.50-inch stainless steel tubing for maximum performance and includes a pair of specially selected Super 40® Series performance mufflers. The custom tailpipes feature added clearance and exit in the factory location with large 3.00-inch polished tips. The system uses the factory hanger locations for an easy install and delivers a moderate to aggressive interior and exterior tone, best suited to the enthusiast who wants their performance to be heard. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage and are designed for an easy fit. The system includes all necessary parts, hardware and instructions for an easy installation you can do at home.
Features
- Includes Hangers and Hardware for an Easy Installation
- Mandrel-bent 16 Gauge Stainless Steel Tubing
- Dyno Tuned for Maximum Performance
- Super 40 Series Performance Mufflers
- Uses the Factory Hanger Locations
- Moderate Exterior Exhaust Tone
- Lifetime Limited Warranty
Application
- Fits 1999-2004 Ford Mustang GT, MACH1 and Bullitt with 4.6L SOHC engine. Does Not fit Cobra.
Specs
2WD/4WD | 2WD |
Brand | Flowmaster |
California Proposition 65 Chemical Name | Chromium (hexavalent compounds) |
California Proposition 65 Chemical Name | Nickel (Metallic) |
California Proposition 65 Required | Yes |
Emission Code | 5 |
Exhaust Series | American Thunder |
Exit Position | Dual Out Rear |
Heat Shield | No |
Inlet Diameter (in) | 2.5 |
Material | 409 Stainless Steel |
Muffler Part Number | Kit Only |
Muffler Quantity | 2 |
Muffler Series | Super 40 Series |
Outlet Diameter (in) | 2.5 |
Product Type | Exhaust System |
Single Dual | Dual |
Sound Level | Moderate |
System Type | Cat-back |
Tip Diameter (in) | 3 |
Tip Quantity | 2 |
Tubing Diameter (in) | 2.5 |
Warning | California Proposition 65 |







Policies and FAQs
Return Policy
Fault reasons include but are not limited to:
- Buyer was shipped the wrong product
- Buyer was shipped a damaged product
- The product page had incorrect fitment and the part does not fit the Buyer's vehicle
Opened boxes, plastic bags, and other packaging are not considered damage (excluding single use items such as, but not limited to, liquids, software, and other components that cannot be reused/resealed).
FAQs
|Q. What is an Intermediate Brake Line?
|A. This is the line that runs from the front of the vehicle to the rear. On most vehicles it connects to a junction then you will have rear axle lines. On a few cars the intermediate lines will connect to the rear wheels. It is recommended to change the axle lines if you are replacing the intermediate lines.
|Q. What is included in a pre bent brake line kit?
|A. Our kits include all of the solid metal lines for that section of the vehicle
|Q. I need to return something - what's your return policy?
|A. We are happy to help! Please help us to help you by going to our return form and filling out the form as best as you can in order to request a return.
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Modern Day stands by our parts and is happy to accept returns within 30 days of purchase. Parts must be in new condition.
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If a part arrives damaged, or is defective, Please report it to us immediately. So we can handle it for your promptly.