Flowtech headers are the perfect combination of performance and value. Flowtech long tube headers are precision engineered using mandrel bent tubing, formed collectors and 5/16" flanges with sealing rings for a leak-free seal. All mounting hardware and gaskets are included for a simple installation. This header is coated in a high heat resistant black paint for a stealthy appearance.
Features:
- Improved Exhaust Scavenging for Increased Performance
- Leak Test For Max Performance
- Mandrel-Formed Power Plenum
- Leakproof O-Ringed Port Seals
- Include All Mounting Hardware
- Constructed of .049 cold roll flash mild steel tubing
- Precision engineered for fit, performance and economy
- Will not fit with manual transmissions
- Will not fit C6 transmissions
Breaking in an engine with ceramic coated headers WILL result in damage to the coating and will VOID all warranties. Ceramic coated headers require several heat cycles to fully cure before they will withstand extreme heat. Flowtech recommends using cast iron exhaust manifolds or old headers to break in new engines to avoid coating damage. Please call Flowtech tech service at 270-781-9741 for additional information regarding ceramic coated exhaust products. The use of header wraps can cause the header tubes to crack or rust due to excessive heat and moisture build-up. Flowtech does not recommend the use of header wraps as this will void the warranty.
Installation Notes:
Breaking in an engine with ceramic coated headers WILL result in damage to the coating and will VOID all warranties. Ceramic coated headers require several heat cycles to fully cure before they will withstand extreme heat. Flowtech recommends using cast iron exhaust manifolds or old headers to break in new engines to avoid coating damage. Please call Flowtech tech service at 270-781-9741 for additional information regarding ceramic coated exhaust products. The use of header wraps can cause the header tubes to crack or rust due to excessive heat and moisture build-up. Flowtech does not recommend the use of header wraps as this will void the warranty.
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 |
Years |
Engine |
Fitment Notes |
| Ford |
Mustang |
1970 |
5.8L / 351 / V8 |
Standard Header; Primary Tube Coll. Size 1.75x3 in.; Will Not Fit C6 Trans.; Not Legal For Street Use; |
| Ford |
Mustang |
1971 |
5.8L / 351 / V8 |
Standard Header; Primary Tube Coll. Size 1.75x3 in.; Will Not Fit C6 Trans.; Not Legal For Street Use; |
| Ford |
Mustang |
1972 |
5.8L / 351 / V8 |
Standard Header; Primary Tube Coll. Size 1.75x3 in.; Will Not Fit C6 Trans.; Not Legal For Street Use; |
| Ford |
Mustang |
1973 |
5.8L / 351 / V8 |
Standard Header; Primary Tube Coll. Size 1.75x3 in.; Will Not Fit C6 Trans.; Not Legal For Street Use; |
| Mercury |
Cougar |
1970 |
5.8L / 351 / V8 |
Standard Header; Primary Tube Coll. Size 1.75x3 in.; Will Not Fit C6 Trans.; Not Legal For Street Use; |
| Mercury |
Cougar |
1971 |
5.8L / 351 / V8 |
Standard Header; Primary Tube Coll. Size 1.75x3 in.; Will Not Fit C6 Trans.; Not Legal For Street Use; |
| Mercury |
Cougar |
1972 |
5.8L / 351 / V8 |
Standard Header; Primary Tube Coll. Size 1.75x3 in.; Will Not Fit C6 Trans.; Not Legal For Street Use; |
| Mercury |
Cougar |
1973 |
5.8L / 351 / V8 |
Standard Header; Primary Tube Coll. Size 1.75x3 in.; Will Not Fit C6 Trans.; Not Legal For Street Use; |
| Mercury |
Cougar |
1974 |
5.8L / 351 / V8 |
Standard Header; Primary Tube Coll. Size 1.75x3 in.; Will Not Fit C6 Trans.; Not Legal For Street Use; |
