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Tiptronic Switch, Without Cover. Porsche 986 Boxster / 996 1998-05 ❭ 99634783100
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
Upgrade or restore your Porsche steering wheel’s manual-shift capability with this genuine Tiptronic shift-switch assembly. Designed for Porsche 911 (996 series) and Boxster models equipped with the Tiptronic or steering-wheel shift option (option code M432), this unit installs into the steering wheel (without the wheel cover) and enables manual gear-up/gear-down requests via the steering wheel.
Fits:
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
432 - Steering Wheel With Tiptronic Control
436 - 3-Spoke Airbag Steering Wheel
249 - Tiptronic Transmission
Diagram Ref No 5
What This Product Does:
- The switch assembly allows the driver to manually request a gear up or gear down change via the steering wheel (or a stalk) in a car equipped with the Tiptronic or manual-mode automatic transmission.
- When pressed, the switch sends a signal to the transmission control unit (TCU) or shift logic unit, telling the system that the driver wants a gear shift (up or down). The system then executes the shift accordingly (assuming conditions are safe).
- It enables a more engaging driving experience: rather than fully automatic shifts, the driver can intervene via the steering wheel — especially useful for sporty driving or when you want more control.
- Since this switch is mounted in the steering column or wheel housing, it must integrate electrically and mechanically with the steering wheel, clock spring (slip ring), airbag wiring (if present), and shift logic.
Symptoms Of Wear Or Failure:
- Gear shift requests not registering: you press the paddle or switch and the transmission does nothing or delays shifting — the switch may not be signalling properly.
- Unexpected behavior: the shift logic may behave erratically (e.g., unintended shifts, no response) because the input is corrupted or erratic.
- Warning lights or error codes: your TCU or instrument cluster may log faults relating to gear shift input, steering wheel controls, or slip-ring/clock-spring issues.
- Physical damage or wear: the switch may feel loose in the wheel, or the button might require unusual force; wiring or connectors may be degraded; slip-ring may be worn causing intermittent signal loss.
- Having a fully functioning shift-switch on a Tiptronic or manual-mode automatic is key for driver control and engagement. If the switch fails, you lose an important ergonomic interface.
- From a safety standpoint: faults in steering-wheel mounted switch modules can impact other systems (airbag wiring, steering-column controls) or cause unexpected behaviors — replacing a faulty assembly restores correct integration.
- For vehicles being restored, modified or where the steering wheel has been replaced/modified, ensuring the correct switch unit is fitted (and the “without cover” variant matches your wheel) is important for fitment, function and resale value.
- Proper repair avoids repeated diagnostic and repair costs. A degraded switch can lead to transmission control faults, which may require expensive fault-finding.
- Ensures longevity: wiring, mechanical integrity, and switch responsiveness degrade over time; replacing it pre-emptively improves reliability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99634783100
The product you are viewing cross references to these numbers
Fits:
Porsche 987.2 Boxster - 2009 to 2012
Porsche 987.2 Cayman - 2009 to 2012
Porsche 997.2 turbo / GT2 - 2009 to 2012
Porsche 957 Cayenne - 2007 to 2010
For cars with Option Codes
345 - Steering wheel heating (987.2 / 997.2)
2PH - Leather steering wheel for airbag - 3 spokes, heated (Cayenne)
1MD - Leather steering wheel for airbag - 3 spokes, heated, two-colour (Cayenne)
1MW - Leather steering wheel for airbag system - 3 spokes, padded (Cayenne)
2PR - Alcantara steering wheel - 3 spokes, heated, padded (Cayenne)
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95565221122
The product you are viewing cross references to these numbers
Tapered Socket. Universal.

Rennline has adapted Porsche Motorsports engineering with our own style and design to give you the highest quality quick release hub on the market. Unlike similar units on the market, this hub has a tapered asymmetrical socket that eliminates any chance of looseness as the hub breaks in. Rennline Quick Releases are equipped with spring loaded roll pins to allow for a seamless one hand removal which is vital in any emergency situation. All critical components are precision machined from anodized 7075 aircraft grade aluminum and designed to work with the standard 6 bolt pattern found on most Momo, OMP, and Sparco wheels.
Note: Pictures may not show actual product.
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- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Speedster 4.0L (510Bhp) 2019
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
- Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
- Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-17
- Porsche 958 Cayenne S V8 4.8L Petrol (400Hp) 2010-17
- Porsche 958 Cayenne S V8 4.2L Diesel (382Hp) 2010-17
- Porsche 958 Cayenne GTS V8 4.8L Petrol (400Hp) 2010-17
- Porsche 958 Cayenne Turbo V8 4.8L Petrol (500Hp) 2010-17
- Porsche 958 Cayenne Turbo S V8 4.8L Petrol (550Hp) 2010-17
- Porsche 9YA Cayenne V6 3.0L Petrol (340Hp) 2018-23
- Porsche 9YA Cayenne Coupe V6 3.0L Petrol (340Hp) 2019-23
- Porsche 9YA Cayenne E-Hybrid V6 3.0L V6 (340Hp) 2018-23
- Porsche 9YA Cayenne Coupe E-Hybrid V6 3.0L (340Hp) 2020-23
- Porsche 9YA Cayenne S V6 2.9L Petrol (440Hp) 2018-23
- Porsche 9YA Cayenne Coupe S V6 2.9L Petrol (440Hp) 2019-23
- Porsche 9YA Cayenne Turbo V8 4.0L Petrol (550Hp) 2020-23
- Porsche 9YA Cayenne Coupe Turbo V8 4.0L Petrol (550Hp) 2019-23
- Porsche 9YA Cayenne Turbo S E-Hybrid V8 4.0L (550Hp) 2019-23
- Porsche 9YA Cayenne Coupe Turbo S E-Hybrid V8 4.0L (550Hp) 2020-23
- Porsche 971.1 Panamera V6 3.0L 2WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 3.0L Turbocharged V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD (440 Hp) 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4S 2.9L Twin-Turbo V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4S Diesel V8 4.0L 4WD (422 Hp) 2017-18
- Porsche 971.1 Panamera 4S Diesel 4.0L Twin-Turbo V8 Sport Turismo 2017-18
- Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD 2017-20
- Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 E-Hybrid 2.9L Twin-Turbo V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 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
- Porsche 971.1 Panamera Turbo S E-Hybrid V8 4.0L 4WD Executive 2017-20
- Porsche 95B.1 Macan Petrol 2.0L (237Bhp) 2014-18
- Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
- Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18
- Porsche 95B.1 Macan GTS Petrol 3.0L V6 (360Bhp) 2014-18
- Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18
- Porsche 95B.2 Macan Petrol 2.0L (245Bhp) 2019-21
- Porsche 95B.2 Macan S Petrol 3.0L V6 (354Bhp) 2019-21
- Porsche 95B.2 Macan GTS Petrol 2.9L V6 (380Bhp) 2019-21
- Porsche 95B.2 Macan Turbo 2.9L V6 (440Bhp) 2019-21
- Porsche 918 Spyder 4.6L 2014-15

Fits
Porsche Panamera 2017 Onwards
Porsche Cayenne 2015 Onwards
Porsche Macan 2014 Onwards
Porsche 718 Boxster/Cayman 2016 Onwards
Porsche 991.2 2016 Onwards
Porsche 718 Spyder 2015-2017
Upgrade your driving experience and interior appearance all at once with our carbon fiber PDK paddle shifter extensions.
Our Paddle Shifters provide you with a much larger contact area for activation of the up-shift and downshift paddles, meaning you're no longer confined to holding the steering wheel at a precise location when utilizing your paddle shifters.
Made from carbon fiber, these are lightweight, extremely strong, and provide stylish detail to your interior.
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I90
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