Doug's Headers are a fixture in the motorsports aftermarket, pioneering quality muscle car performance headers for decades. Unlike the competition, Doug's Headers prides ourselves on superior design detail resulting in a hassle-free installation for any application.
| Download Name | File Size |
| D690YS.pdf | 309.64KB |
| Make | Model | Years | Engine | Fitment Notes |
| Ford | Mustang | 1964 | 4.3L / 260 / V8 4.7L / 289 / V8 |
Header installation requires the use of the 1965-66 Non Hi-Po V8 clutch equalizer bar. On Power Steering Cars, Installation requires power steering bracket PN H7609. Vehicles with Air Injection heads will require grinding of the header flange to fit. Tri Y design. Use recommended C5ZZ16A052E "export brace" if shock mount center to center dimension is less than 33 3/4" Will not fit GT40 "P" heads. Tri-Y Metallic Ceramic Coated Silver |
| Ford | Mustang | 1965 | 4.3L / 260 / V8 4.7L / 289 / V8 |
Header installation requires the use of the 1965-66 Non Hi-Po V8 clutch equalizer bar. On Power Steering Cars, Installation requires power steering bracket PN H7609. Vehicles with Air Injection heads will require grinding of the header flange to fit. Tri Y design. Use recommended C5ZZ16A052E "export brace" if shock mount center to center dimension is less than 33 3/4" Will not fit GT40 "P" heads. Tri-Y Metallic Ceramic Coated Silver |
| Ford | Mustang | 1966 | 4.7L / 289 / V8 | Header installation requires the use of the 1965-66 Non Hi-Po V8 clutch equalizer bar. On Power Steering Cars, Installation requires power steering bracket PN H7609. Vehicles with Air Injection heads will require grinding of the header flange to fit. Tri Y design. Use recommended C5ZZ16A052E "export brace" if shock mount center to center dimension is less than 33 3/4" Will not fit GT40 "P" heads. Tri-Y Metallic Ceramic Coated Silver |
| Ford | Mustang | 1967 | 4.7L / 289 / V8 | Header installation requires the use of the 1965-66 Non Hi-Po V8 clutch equalizer bar. On Power Steering Cars, Installation requires power steering bracket PN H7609. Vehicles with Air Injection heads will require grinding of the header flange to fit. Tri Y design. Use recommended C5ZZ16A052E "export brace" if shock mount center to center dimension is less than 33 3/4" Will not fit GT40 "P" heads. Tri-Y Metallic Ceramic Coated Silver |
| Ford | Mustang | 1968 | 5.0L / 302 / V8 4.7L / 289 / V8 |
Header installation requires the use of the 1965-66 Non Hi-Po V8 clutch equalizer bar. On Power Steering Cars, Installation requires power steering bracket PN H7609. Vehicles with Air Injection heads will require grinding of the header flange to fit. Tri Y design. Use recommended C5ZZ16A052E "export brace" if shock mount center to center dimension is less than 33 3/4" Will not fit GT40 "P" heads. Tri-Y Metallic Ceramic Coated Silver |
| Ford | Mustang | 1969 | 5.0L / 302 / V8 | Header installation requires the use of the 1965-66 Non Hi-Po V8 clutch equalizer bar. On Power Steering Cars, Installation requires power steering bracket PN H7609. Vehicles with Air Injection heads will require grinding of the header flange to fit. Tri Y design. Use recommended C5ZZ16A052E "export brace" if shock mount center to center dimension is less than 33 3/4" Will not fit GT40 "P" heads. Tri-Y Metallic Ceramic Coated Silver |
| Ford | Mustang | 1970 | 5.0L / 302 / V8 | Header installation requires the use of the 1965-66 Non Hi-Po V8 clutch equalizer bar. On Power Steering Cars, Installation requires power steering bracket PN H7609. Vehicles with Air Injection heads will require grinding of the header flange to fit. Tri Y design. Use recommended C5ZZ16A052E "export brace" if shock mount center to center dimension is less than 33 3/4" Will not fit GT40 "P" heads. Tri-Y Metallic Ceramic Coated Silver |
| Mercury | Cougar | 1967 | 4.7L / 289 / V8 | Header installation requires the use of the 1965-66 Non Hi-Po V8 clutch equalizer bar. On Power Steering Cars, Installation requires power steering bracket PN H7609. Vehicles with Air Injection heads will require grinding of the header flange to fit. Tri Y design. Use recommended C5ZZ16A052E "export brace" if shock mount center to center dimension is less than 33 3/4" Will not fit GT40 "P" heads. Tri-Y Metallic Ceramic Coated Silver |
| Mercury | Cougar | 1968 | 5.0L / 302 / V8 4.7L / 289 / V8 |
Header installation requires the use of the 1965-66 Non Hi-Po V8 clutch equalizer bar. On Power Steering Cars, Installation requires power steering bracket PN H7609. Vehicles with Air Injection heads will require grinding of the header flange to fit. Tri Y design. Use recommended C5ZZ16A052E "export brace" if shock mount center to center dimension is less than 33 3/4" Will not fit GT40 "P" heads. Tri-Y Metallic Ceramic Coated Silver |
| Mercury | Cougar | 1969 | 5.0L / 302 / V8 | Header installation requires the use of the 1965-66 Non Hi-Po V8 clutch equalizer bar. On Power Steering Cars, Installation requires power steering bracket PN H7609. Vehicles with Air Injection heads will require grinding of the header flange to fit. Tri Y design. Use recommended C5ZZ16A052E "export brace" if shock mount center to center dimension is less than 33 3/4" Will not fit GT40 "P" heads. Tri-Y Metallic Ceramic Coated Silver |
| Collector Attachment | 3-Bolt Flange |
| Collector Diameter | 2.5 IN |
| Collector Port Diameter | 2.5 IN |
| Color | Silver |
| Cylinder Head Port Shape | SAP |
| Design | Tri-Y |
| Finish | Metallic Ceramic Coated |
| Flange Thickness | 0.375 IN |
| Gasket Or Seal Included | Yes |
| Gaskets Included | Yes |
| Grade Type | Performance |
| Header Material | Steel |
| Header Style | Tri-Y |
| Material | Steel |
| Mounting Hardware Included | Yes |
| Oxygen Sensor Port | No |
| Part Type | Exhaust Header |
| Port Shape | SAP |
| Primary Tube Outside Diameter | 1.625 IN |
| Proposition 65 | www.P65Warnings.ca.gov |
| Sheen Level | Semi-Gloss |
| Tube Wall Thickness | 16 GU |
| Warranty Time | 24 Months |
