Flowtech Tri-Y Headers — Small Block Ford | 12119FLT | Black
Ditch the factory manifolds. Factory manifolds trap heat; kill airflow; and rob your engine of the torque it is capable of. If you have put real work into your build; your exhaust should match that effort. The Tri-Y design groups cylinders by firing order before merging into one collector. That means better exhaust flow across a wider rpm range - not just at the top end. You feel it pulling hard off idle; through the gears; and cruising down the highway. That is the difference between a header built for a dyno sheet and one built for the real world. Clean install; honest specs; full hardware kit in the box.
Install Level: Intermediate - header install; some builds need minor clearancing
Racing use only. Not street legal. Not CARB compliant. Illegal to install on an emissions-controlled vehicle.
Will not fit FMX; C-6; AOD or C-4 (164-tooth) transmissions; 351W engines; or GT40-P heads.
Some builds need minor clearancing.
Sold as a pair; collector reducer included.
Ditch the factory manifolds. The Flowtech 12119FLT Tri-Y headers bolt on more torque, better flow, and a complete hardware kit — sold as a pair and ready to work.
Your Exhaust Is Leaving Power Behind
They trap heat, kill airflow, and rob your engine of the torque it's capable of. If you've put real work into your build, your exhaust should match that effort.
More Torque Where You Feel It
The Tri-Y design groups cylinders by firing order before merging into one collector. That means better exhaust flow across a wider RPM range — not just at the top end. You feel it pulling hard off idle, through the gears, and cruising down the highway. That's the difference between a header built for a dyno sheet and one built for the real world.
What You Get
- 1.5" primary tubes, 18-gauge mild steel
- 2.5" collector with 3-bolt flange
- Collector reducer included — steps down to 2.0"
- Painted black satin finish
- Full hardware kit — bolts, gaskets, and seals included
- Sold as a pair | Part #12119FLT
These headers are in our lineup because they deliver — clean install, honest specs, and real performance gains for small block Ford builds.
Check Fitment Before You Order
*These will NOT fit FMX, C-6, AOD, or C-4 (164-tooth) transmissions, 351W engines, or GT40-P heads. Some builds need minor clearancing.
Racing Use Only. Not street legal. Not CARB compliant. Illegal to install on an emissions-controlled vehicle.
Tri-Y design - cylinders grouped by firing order before merging
Primaries: 1.5 inch; 18-gauge mild steel
Collector: 2.5 inch with 3-bolt flange
Collector reducer included - steps down to 2.0 inch
Finish: painted black satin
Full hardware kit - bolts; gaskets and seals included
Sold as a pair
Will NOT fit FMX; C-6; AOD or C-4 (164-tooth) transmissions.
Will NOT fit 351W engines or GT40-P heads.
Some builds need minor clearancing.
Racing use only - not street legal; not CARB compliant.
