Description
Impreza GDB HKS Exhaust Manifold – Twin Scroll 14019-AF001
The exhaust manifold that pulls potential power out of turbo vehicle.
Conventional Impreza C,D,E model item is also correspond with F model.
Features
- Stock replacement type stainless steel exhaust manifold is now corresponding with the new F model.
- We have adopted the ideal pipe diameter by eliminating the flange step which is the reason for the resistance.
- In order not to drop the flow rate we made the shape of the junction portion for little change of the cross-sectional area to the set.
- With our test drive and vibration test resulted to disuse the flexible tube and slip joint which causes the exhaust resistance, and reinforced for the junction portion.
- For these changes, both the power and torque has increased at all ranges. It’s much better to control at low to mid RPM.
Accessories
| Part | Quantity | Size |
| Gasket (Turbine) side | 1 | Stock |
| Gasket (Engine) side | 1 | Stock |
| Stud bolt | 1 | M8 P1.25 |
| Self-tapping screw | 1 | 6 × 16 |
| Thermo seal | 1 | 300 × 300mm |
| Vehicle | Model | Engine | Model Year | Main/Bypass | Code No. | Price | Remarks | |
|---|---|---|---|---|---|---|---|---|
| Pipe size | Pipe thickness | |||||||
| IMPREZA | GDB | EJ207 | 02/11-07/06 | 42.7 | 2 | 14019-AF001 | For Model C to G. Not fit to stock under cover. | |
【STAINLESS STEEL EXHAUST MANIFOLD (for Turbo)】
STAINLESS EXHAUST MANIFOLD pulls out potential power from a turbocharged engine.
The best solution to reduce primary exhaust gas pressure and supply smooth exhaust gas to the turbine is the replacement of exhaust manifold. HKS supplies stock replacement type Stainless Exhaust Manifold.
The turbine performance is affected by the Exhaust Manifold.
Shape, the diameter of pipes, and production quality of exhaust manifold between engine and turbine affect the performance of the turbine. HKS Exhaust Manifolds were developed with know-how and data from long time development experience of turbo technologies.
The diameter of pipes and the design of bending are designed for each engine performance and displacement. The welding portion between flange and pipe is flattened to reduce the friction of exhaust gas.
As a result, the response of turbocharger at middle and high rpm range is improved. Both torque and horsepower are also increased.
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