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Middle Valve Actuator Kit for Porsche (971) Panamera GTS / Turbo 2017-2020 ❭ P-HF1170
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
- Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 Sport Turismo 2017-20
- Porsche 971.1 Panamera Turbo S E-Hybrid V8 4.0L 4WD 2017-20
Fits:
Porsche (971) Panamera GTS / Sport Turismo 2019 - 2020
Porsche (971) Panamera Turbo / Sport Turismo 2017 - 2020
Porsche (971) Panamera Turbo S E-Hybrid / Sport Turismo 2017 - 2020
For vehicles with the base Porsche exhaust system, which is then replaced by the Akrapovič Evolution Line system, the Middle Valve Actuator Kit (P-HF1170) is a mandatory upgrade.
If the Evolution Line system replaces the Porsche sports exhaust system, the Middle Valve Actuator Kit (P-HF1170) is not required.
Please note: This item is not a stock product. It is a special order part and once ordered with us is not subject to cancellation or return unless proven not fit for purpose or defected.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
P-HF1170
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08

The Porsche sound is a legendary mix of power, presence and athletic potential. Now you can make even more of your car with this stainless steel sports exhaust system. Sound output varies as throttle inputs change, from a standard note during normal road driving to a more aggressive tone under high-performance use. A soundproofing switch enables you to reduce noise output to standard levels when required. Includes stainless steel tailpipes with hard-chrome finish.
This product requires a extra switch which is not included in the kit you have two choices
1. 99761312900FHM Cars WITHOUT "PASM" electronic damper control
2. 99761313100FHM Cars WITH "PASM" electronic damper control
Fits:
Porsche 997 MK1 C2 / C4 / C2S / C4S 2005>>
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99704420103
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Fits:
Porsche 997 C2, C4, C2S, C4S
*if you buy this exhaust for non S model or model with the Porsche Sports Exhaust, you will need to purchase new S-type tailpipes (Output flange 2.25" / 58mm) . If you have a factory Porsche PSE (Porsche sport exhaust) this system can replace the original exhaust boxes, you will be able to use the original switches in your car
It is recommended to run the exhaust mostly in the open valve mode (loud) as closed valve mode might be too restrictive for engine gas flow for longer periods of time and result in loss of engine power.
DesignTek Valvetronic sports exhaust system gives smooth 15Bhp/17 ft-lbs of torque to the wheels with the valves opened, Made from high quality 14-16 gauge T304 stainless steel, hydro-formed muffler cases, radiuses stressed relieved with 2000 degree ceramic fiber and stainless steel wool packed free flow mufflers.
This unique exhaust configures a dual-tone setup controlled by a key fob which you can switch on the fly. Direct replacement for the factory mufflers and will work with the stock catalytic converters or any aftermarket sport cats designed to fit with OEM exhaust systems
Superb sports car sound, throaty and deep with the valves opened, but docile with the valves closed. You can reuse your factory OEM Porsche tips or you can opt for DesignTek tail pipes.
Please note the remote controlers do not come with batteries. You will have to source them at your own cost. The type is CR2025
Installation instructions for Valvetronic Mufflers CLICK HERE
For Wiring Diagram please CLICK HERE
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
3606009716
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
This is the switch required for the original Porsche sport exhaust system our part number code 99994420103
Fits:
Cars WITH "PASM" electronic damper control
Porsche 997 MKI Carrera
Porsche 997 MKI Carrera S
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99761313100FMH
The product you are viewing cross references to these numbers
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