STANDARDManufacturer 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 |
| Mercury | Cougar | Base | 1969 | 7.0L / 428 / V8 6.4L / 390 / V8 5.8L / 351 / V8 5.0L / 302 / V8 |
2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 17 in.; 23 in. Overall Length; 409 Stainless Steel Not Direct Fit-Some Adaptation Required |
| Mercury | Cougar | Base | 1970 | 7.0L / 429 / V8 7.0L / 428 / V8 5.8L / 351 / V8 |
2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 17 in.; 23 in. Overall Length; 409 Stainless Steel Not Direct Fit-Some Adaptation Required |
| Mercury | Cougar | Boss 302 | 1969 | 5.0L / 302 / V8 | 2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 17 in.; 23 in. Overall Length; 409 Stainless Steel Not Direct Fit-Some Adaptation Required |
| Mercury | Cougar | Boss 302 | 1970 | 5.0L / 302 / V8 | 2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 17 in.; 23 in. Overall Length; 409 Stainless Steel Not Direct Fit-Some Adaptation Required |
| Mercury | Cougar | Boss 429 | 1969 | 7.0L / 429 / V8 | 2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 17 in.; 23 in. Overall Length; 409 Stainless Steel Not Direct Fit-Some Adaptation Required |
| Mercury | Cougar | Boss 429 | 1970 | 7.0L / 429 / V8 | 2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 17 in.; 23 in. Overall Length; 409 Stainless Steel Not Direct Fit-Some Adaptation Required |
| Mercury | Cougar | Cobra Jet | 1969 | 7.0L / 428 / V8 | 2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 17 in.; 23 in. Overall Length; 409 Stainless Steel Not Direct Fit-Some Adaptation Required |
| Mercury | Cougar | Cobra Jet | 1970 | 7.0L / 429 / V8 7.0L / 428 / V8 |
2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 17 in.; 23 in. Overall Length; 409 Stainless Steel Not Direct Fit-Some Adaptation Required |
| Mercury | Cougar | XR-7 | 1969 | 7.0L / 428 / V8 6.4L / 390 / V8 5.8L / 351 / V8 5.0L / 302 / V8 |
2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 17 in.; 23 in. Overall Length; 409 Stainless Steel Not Direct Fit-Some Adaptation Required |
| Mercury | Cougar | XR-7 | 1970 | 7.0L / 429 / V8 7.0L / 428 / V8 5.8L / 351 / V8 |
2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 17 in.; 23 in. Overall Length; 409 Stainless Steel Not Direct Fit-Some Adaptation Required |
| Mercury | Cougar | 1967 | 6.4L / 390 / V8 4.7L / 289 / V8 |
2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 17 in.; 23 in. Overall Length; 409 Stainless Steel Not Direct Fit-Some Adaptation Required |
|
| Mercury | Cougar | 1968 | 7.0L / 428 / V8 7.0L / 427 / V8 6.4L / 390 / V8 4.7L / 289 / V8 5.0L / 302 / V8 |
2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 17 in.; 23 in. Overall Length; 409 Stainless Steel Not Direct Fit-Some Adaptation Required |
|
| Mercury | Cougar | 1971 | 7.0L / 429 / V8 5.8L / 351 / V8 |
2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 17 in.; 23 in. Overall Length; 409 Stainless Steel Not Direct Fit-Some Adaptation Required |
|
| Mercury | Cougar | 1972 | 5.8L / 351 / V8 | 2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 17 in.; 23 in. Overall Length; 409 Stainless Steel Not Direct Fit-Some Adaptation Required |
|
| Mercury | Cougar | 1973 | 7.5L / 460 / V8 6.6L / 400 / V8 5.8L / 351 / V8 |
2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 17 in.; 23 in. Overall Length; 409 Stainless Steel Not Direct Fit-Some Adaptation Required |
|
| Mercury | Cougar | 1974 | 7.5L / 460 / V8 5.8L / 351 / V8 |
2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 17 in.; 23 in. Overall Length; 409 Stainless Steel Not Direct Fit-Some Adaptation Required |
| Automotive Item Grade | High Performance |
| Body Height | 4.000 in. |
| Body Height (in) | 4 |
| Body Length | 17.000 in. |
| Body Length (in) | 17 |
| Body Width | 9.750 in. |
| Body Width (in) | 9.75 |
| 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 |
| Color | Black |
| Emission Code | 5 |
| Finish | Paint |
| Fitment | Universal |
| Inlet Connection Type | Pipe Connection |
| Inlet Diameter | 2.250 in. |
| Inlet Diameter (in) | 2.25 |
| Inlet Inside Diameter | 2.250 in. |
| Inlet Outside Diameter | 2.250 in. |
| Inlet Position | Offset |
| Inlet Type | Single Offset |
| Main Piping Diameter | 2.250 in. |
| Material | Stainless Steel |
| Muffler Series | 50 Series Delta Flow |
| Muffler Type | Chambered |
| Outlet Connection Type | Pipe Connection |
| Outlet Diameter | 2.500 in. |
| Outlet Diameter (in) | 2.25 |
| Outlet Outside Diameter | 2.250 in. |
| Outlet Position | Center |
| Outlet Type | Single Center Outlet |
| Overall Length | 23.000 in. |
| Overall Length (in) | 23 |
| Part Type | Exhaust Muffler |
| Reversible | No |
| Shape | Oval |
| Sound Level | Moderate |
| Tip Quantity | 0 |
| Type of Muffler | Chambered |
| Vehicle Type | 4/6 CYL Engine |
| WARNING CA Proposition 65 | WARNING: Cancer and Reproductive Harm |
| Warranty | Limited Lifetime (Lifetime) |
