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.
| Download Name | File Size |
| fm_warranty_general.pdf | 88.58KB |
| 817817_instructions.pdf | 2.58MB |
| Make | Model | Submodel | Years | Engine |
| Ford | Mustang | GT Premium | 2018 | 5.0L / 302 / V8 |
| Ford | Mustang | GT Premium | 2019 | 5.0L / 302 / V8 |
| Ford | Mustang | GT Premium | 2020 | 5.0L / 302 / V8 |
| Ford | Mustang | GT Premium | 2021 | 5.0L / 302 / V8 |
| Ford | Mustang | GT Premium | 2022 | 5.0L / 302 / V8 |
| Ford | Mustang | GT Premium | 2023 | 5.0L / 302 / V8 |
| Ford | Mustang | GT V8 | 2019 | 5.0L / 302 / V8 |
| Ford | Mustang | GT V8 | 2020 | 5.0L / 302 / V8 |
| Ford | Mustang | GT | 2018 | 5.0L / 302 / V8 |
| Ford | Mustang | GT | 2019 | 5.0L / 302 / V8 |
| Ford | Mustang | GT | 2020 | 5.0L / 302 / V8 |
| Ford | Mustang | GT | 2021 | 5.0L / 302 / V8 |
| Ford | Mustang | GT | 2022 | 5.0L / 302 / V8 |
| Ford | Mustang | GT | 2023 | 5.0L / 302 / V8 |
| Ford | Mustang | Mach 1 | 2022 | 5.0L / 302 / V8 |
| Ford | Mustang | Mach 1 | 2023 | 5.0L / 302 / V8 |
| California Proposition 65 Chemical Name | Chromium (hexavalent compounds), Nickel (Metallic) |
| California Proposition 65 Required | Yes |
| Catalytic Converter Included | No |
| Emission Code | 5 |
| Heat Shield | No |
| Material | 409S Stainless Steel |
| Mount Type | Uses Factory Hangers |
| Muffler Quantity | None |
| Part Type | Exhaust X Pipe |
| Product Type | Exhaust Accessories |
| Proposition 65 | www.P65Warnings.ca.gov |
| Single Dual | Dual |
| System Type | Exhaust Accessory |
| Tip Quantity | Not Included |
| Tip Style | Not Included |
| Tube Diameter | 2-1/2 Inch |
| Tubing Diameter (in) | 2.5 |
| Tubing Material | 409S Stainless Steel |
| Warranty | Limited Lifetime (Lifetime) |
