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 |
FM_Warranty_General.pdf | 88.58KB |
NAFTA_COO-2013.pdf | 105.94KB |
Make | Model | Submodel | Years | Engine | Fitment Notes |
Ford | Mustang | Base | 1968 | 7.0L / 428 / V8 7.0L / 427 / V8 6.4L / 390 / V8 4.7L / 289 / V8 3.3L / 200 / L6 5.0L / 302 / V8 |
2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required Does Not Fit w/Staggered Shocks~Use Offset Inlet/Center Outlet Mufflers Only |
Ford | Mustang | Base | 1969 | 7.0L / 429 / V8 7.0L / 428 / V8 6.4L / 390 / V8 4.1L / 250 / L6 3.3L / 200 / L6 5.0L / 302 / V8 5.8L / 351 / V8 |
2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required Does Not Fit w/Staggered Shocks~Use Offset Inlet/Center Outlet Mufflers Only |
Ford | Mustang | Base | 1970 | 7.0L / 429 / V8 7.0L / 428 / V8 4.1L / 250 / L6 3.3L / 200 / L6 5.0L / 302 / V8 5.8L / 351 / V8 |
2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required Does Not Fit w/Staggered Shocks~Use Offset Inlet/Center Outlet Mufflers Only |
Ford | Mustang | Base | 1971 | 7.0L / 429 / V8 4.1L / 250 / L6 5.0L / 302 / V8 5.8L / 351 / V8 |
2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required Does Not Fit w/Staggered Shocks~Use Offset Inlet/Center Outlet Mufflers Only |
Ford | Mustang | Boss 351 | 1971 | 5.8L / 351 / V8 | 2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required |
Ford | Mustang | Boss 429 | 1969 | 7.0L / 429 / V8 | 2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required |
Ford | Mustang | Boss 429 | 1970 | 7.0L / 429 / V8 | 2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required |
Ford | Mustang | Grande | 1970 | 7.0L / 429 / V8 7.0L / 428 / V8 5.8L / 351 / V8 |
2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required Does Not Fit w/Staggered Shocks~Use Offset Inlet/Center Outlet Mufflers Only |
Ford | Mustang | Grande | 1971 | 7.0L / 429 / V8 4.1L / 250 / L6 5.8L / 351 / V8 |
2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required Does Not Fit w/Staggered Shocks~Use Offset Inlet/Center Outlet Mufflers Only |
Ford | Mustang | Mach 1 | 1970 | 7.0L / 429 / V8 7.0L / 428 / V8 5.8L / 351 / V8 |
2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required Does Not Fit w/Staggered Shocks~Use Offset Inlet/Center Outlet Mufflers Only |
Ford | Mustang | Mach 1 | 1971 | 7.0L / 429 / V8 5.8L / 351 / V8 |
2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required Does Not Fit w/Staggered Shocks~Use Offset Inlet/Center Outlet Mufflers Only |
Ford | Mustang | Shelby GT-350 | 1969 | 5.8L / 351 / V8 | 2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required |
Ford | Mustang | Shelby GT-350 | 1970 | 5.8L / 351 / V8 | 2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required |
Ford | Mustang | Shelby GT-500KR | 1968 | 7.0L / 428 / V8 | 2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required |
Ford | Mustang | Shelby GT-500 | 1968 | 7.0L / 428 / V8 7.0L / 427 / V8 |
2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required |
Ford | Mustang | Shelby GT-500 | 1969 | 7.0L / 428 / V8 | 2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required |
Ford | Mustang | Shelby GT-500 | 1970 | 7.0L / 428 / V8 | 2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required |
Ford | Mustang | 1964 | 4.7L / 289 / V8 4.3L / 260 / V8 |
2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required | |
Ford | Mustang | 1965 | 4.7L / 289 / V8 4.3L / 260 / V8 3.3L / 200 / L6 2.8L / 170 / L6 |
2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required Does Not Fit w/Staggered Shocks~Use Offset Inlet/Center Outlet Mufflers Only |
|
Ford | Mustang | 1966 | 4.7L / 289 / V8 3.3L / 200 / L6 |
2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required Does Not Fit w/Staggered Shocks~Use Offset Inlet/Center Outlet Mufflers Only |
|
Ford | Mustang | 1967 | 7.0L / 428 / V8 6.4L / 390 / V8 4.7L / 289 / V8 3.3L / 200 / L6 |
2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required Does Not Fit w/Staggered Shocks~Use Offset Inlet/Center Outlet Mufflers Only |
|
Ford | Mustang | 1972 | 4.1L / 250 / L6 5.0L / 302 / V8 5.8L / 351 / V8 |
2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required Does Not Fit w/Staggered Shocks~Use Offset Inlet/Center Outlet Mufflers Only |
|
Ford | Mustang | 1973 | 4.1L / 250 / L6 5.0L / 302 / V8 5.8L / 351 / V8 |
2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required Does Not Fit w/Staggered Shocks~Use Offset Inlet/Center Outlet Mufflers Only |
|
Mercury | Cougar | 1967 | 6.4L / 390 / V8 4.7L / 289 / V8 |
2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required Does Not Fit w/Staggered Shocks~Use Offset Inlet/Center Outlet Mufflers Only |
|
Mercury | Cougar | 1968 | 7.0L / 428 / V8 7.0L / 427 / V8 6.4L / 390 / V8 4.7L / 289 / V8 5.0L / 302 / V8 |
2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required Does Not Fit w/Staggered Shocks~Use Offset Inlet/Center Outlet Mufflers Only |
|
Mercury | Cougar | 1969 | 7.0L / 429 / V8 7.0L / 428 / V8 6.4L / 390 / V8 5.0L / 302 / V8 5.8L / 351 / V8 |
2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required Does Not Fit w/Staggered Shocks~Use Offset Inlet/Center Outlet Mufflers Only |
|
Mercury | Cougar | 1970 | 7.0L / 429 / V8 7.0L / 428 / V8 6.4L / 390 / V8 5.8L / 351 / V8 5.0L / 302 / V8 |
2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required Does Not Fit w/Staggered Shocks~Use Offset Inlet/Center Outlet Mufflers Only |
|
Mercury | Cougar | 1971 | 7.0L / 429 / V8 5.8L / 351 / V8 |
2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required Does Not Fit w/Staggered Shocks~Use Offset Inlet/Center Outlet Mufflers Only |
|
Mercury | Cougar | 1972 | 5.8L / 351 / V8 | 2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required Does Not Fit w/Staggered Shocks~Use Offset Inlet/Center Outlet Mufflers Only |
|
Mercury | Cougar | 1973 | 7.5L / 460 / V8 6.6L / 400 / V8 5.8L / 351 / V8 |
2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required Does Not Fit w/Staggered Shocks~Use Offset Inlet/Center Outlet Mufflers Only |
|
Mercury | Cougar | 1974 | 7.5L / 460 / V8 5.8L / 351 / V8 |
2.5 in. Dia. Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Center Outlet Mufflers Required Does Not Fit w/Staggered Shocks~Use Offset Inlet/Center Outlet Mufflers Only |
Automotive Item Grade | High Performance |
California Proposition 65 Required | No |
Color | Gray |
Emission Code | 5 |
Exhaust Pipe Wall Max Gauge | 16 |
Exhaust Pipe Wall Maximum Gauge | 16 |
Fitment | Direct OE Replacement |
Inlet Diameter | 2.500 in. |
Inlet Diameter (in) | 2.5 |
Material | Aluminized Steel |
Outlet Diameter | 2.500 in. |
Outlet Diameter (in) | 2.5 |
Overall Length | 58.50 in. |
Overall Length (in) | 58.5 |
Part Type | Exhaust Tail Pipe |
Position | N/A |
System Type | Tailpipe |
Tubing Diameter | 2.500 in. |
Tubing Diameter (in) | 2.5 |
Warranty Time | 36 Months |