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- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Tyre Pressure Monitoring Sensor (RDK) Nut Set
Sold as a pair - 1 pair required per wheel
High-quality replacement nut set designed for the tyre
pressure monitoring system (RDK) fitted to Porsche 928 models from 1990
onwards.
Fits:
Diagram ref no 6
These vehicles were equipped with early-generation tyre
pressure sensors, with two sensors installed per wheel. During
removal—especially after decades in place—the original aluminium nuts often
deform or become unusable, particularly when removing sensors for wheel
refurbishment or powder coating.
This replacement nut set has been specifically developed to
allow correct reinstallation of the TPMS sensors, ensuring a secure fit
and proper system operation.
Manufactured with an anodized coating, these nuts offer significantly improved corrosion resistance compared to the original parts, making them ideal for long-term use.
Key Features
• Replacement nut set for Porsche 928 TPMS (RDK) sensors
• Suitable for models from 1990 onwards
• Designed for correct sensor reinstallation
• Anodized finish for enhanced corrosion resistance
• Ideal for wheel refurbishment and restoration
• Improved durability over original aluminium nuts
Function and Purpose
These nuts are essential for securing the tyre pressure sensors.
They help to:
• Fix TPMS (RDK) sensors securely within the wheel
• Ensure correct positioning and function of sensors
• Enable proper reinstallation after removal
• Maintain long-term reliability of the system
Why Replace TPMS Sensor Nuts
Original nuts are often compromised during removal.
Common issues include:
• Deformation during removal
• Corrosion after decades of use
• Loss of proper thread engagement
• Reduced sealing and fastening reliability
Even if original nuts appear usable, replacing them ensures correct fitment and long-term durability.
Perfect for Wheel Refurbishment
When refurbishing or powder coating wheels:
• Sensors must be removed
• Original nuts are often damaged or unusable
• New nuts are required for safe reinstallation
This kit provides the correct solution for restoration and refurbishment work.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92836120301
The product you are viewing cross references to these numbers
OnTrack Internal TPMS Sensors (Pack of 4)
Take complete control of your tyre performance with the OnTrack Internal TPMS Sensors, developed for track day enthusiasts, racers and performance drivers who demand fast, accurate tyre pressure and temperature monitoring. Although originally engineered for motorsport, these internal wireless sensors are equally at home on the road, allowing everyday drivers to monitor tyre pressures and temperatures in real time to improve reliability, safety, tyre life and driving confidence.
Using advanced Bluetooth® Low Energy (BLE) technology, each sensor continuously transmits live tyre pressure and temperature data to the free OnTrack App, enabling you to detect pressure loss, overheating or uneven tyre temperatures before they affect vehicle performance or safety.
Whether you're fine-tuning tyre pressures at a track day, enjoying spirited road driving or simply checking your tyres during everyday use, the OnTrack Internal TPMS System provides the information needed to keep your vehicle performing at its best.
Key Features
Internal
wireless TPMS sensors (Pack of 4)
Live
tyre pressure and temperature monitoring
Ultra-fast
refresh rates
Bluetooth®
Low Energy (BLE) connectivity
Real-time
data displayed in the OnTrack App
Customisable
pressure and temperature alerts
Protected
internal sensor design for maximum durability
Free
iOS App (Android compatibility coming Late Summer 2026)
Suitable For
- Track days Motorsport and racing
- Performance road cars
- Fast road driving
- Everyday
tyre pressure and temperature monitoring
Designed primarily for vehicles without a factory TPMS system, the sensors can also be fitted to vehicles equipped with factory TPMS. In these applications, tyre pressure and temperature data is displayed exclusively through the OnTrack App and does not integrate with the vehicle's original instrument cluster.
Live Tyre Monitoring
The OnTrack system continuously measures each tyre
individually, allowing you to:
- Monitor live tyre pressures
- Monitor tyre temperatures
- Detect slow punctures and pressure loss early
- Identify uneven tyre temperatures
- Receive instant pressure and temperature alerts
- Optimise tyre pressures for maximum grip, tyre life and efficiency
The system's exceptionally fast refresh rates provide near real-time information, helping drivers make informed decisions whether on circuit or on the road.
Package Contents
- 4 x OnTrack Internal Wireless Tyre Pressure & Temperature Sensors
- Free OnTrack App (iOS)
- Android compatibility coming Late Summer 2026
Professional Installation
The OnTrack Internal TPMS Sensors are mounted inside each wheel, replacing the standard valve assembly. As the sensors fit internally, the tyre must be removed from the wheel rim during installation, so professional fitting by a tyre specialist is recommended. Once installed, the sensors are protected from road debris, weather and accidental damage, providing a discreet OEM-style appearance and dependable long-term performance.
Why Choose OnTrack?
Developed by motorsport enthusiasts, the OnTrack Internal TPMS System delivers professional-grade tyre monitoring in a discreet, OEM-style installation. While designed to withstand the demands of circuit driving, it's equally valuable for everyday road use, helping drivers maintain correct tyre pressures, improve safety, reduce tyre wear, enhance fuel efficiency and detect potential tyre issues before they become serious.
External Tyre Valve Cap TPMS Sensors (Pack of 4)
Monitor your tyre pressures and temperatures with confidence using the OnTrack External Tyre Valve Cap TPMS Sensors. Originally developed for track days, motorsport and high-performance driving, these lightweight Bluetooth® sensors are equally at home on the road, allowing everyday drivers to monitor tyre pressures and temperatures in real time to improve reliability, safety, tyre life and overall driving confidence.
Replacing your existing valve caps, the external sensors install in minutes with no tyre removal or specialist tools required. Once paired with the free OnTrack App, they provide fast, accurate, real-time pressure and temperature readings for all four tyres, helping you identify pressure loss, uneven temperatures and changing tyre conditions before they become a problem.
Unlike many conventional TPMS systems, OnTrack delivers ultra-fast refresh rates via Bluetooth Low Energy (BLE), allowing you to monitor tyre performance live whether you're chasing lap times on circuit, enjoying a spirited weekend drive or simply keeping your Porsche's tyres at their optimum pressure during everyday use.
Features
- External wireless TPMS valve cap sensors
- Pack of four sensors
- Real-time tyre pressure and temperature monitoring
- Ultra-fast refresh rates
- Bluetooth Low Energy (BLE) connectivity
- Live data displayed in the OnTrack App
- Custom pressure and temperature alerts
- Quick, tool-free installation
- Easily transferable between compatible vehicles
- Free iOS App (Android compatibility coming Late Summer 2026)
Ideal For
- Track days
- Motorsport
- Performance driving / Fast road use
- Everyday driving tyre pressure monitoring
The OnTrack External TPMS Sensors are primarily intended for
vehicles without a factory TPMS system. They can also be fitted to vehicles
with factory TPMS, although all tyre pressure and temperature data will be
displayed through the OnTrack App rather than the vehicle's original instrument
display.
Live Tyre Monitoring
The OnTrack system continuously measures each tyre
individually, allowing you to:
- Monitor live tyre pressures
- Monitor tyre temperatures
- Detect slow punctures and pressure loss early
- Identify uneven tyre temperatures
- Receive instant pressure and temperature alerts
- Optimise tyre pressures for maximum grip, tyre life and efficiency
The system's exceptionally fast refresh rates provide near real-time information, helping drivers make informed decisions whether on circuit or on the road.
Package Contents
- 4 x External Wireless Tyre Pressure & Temperature Sensors
- Free OnTrack App (iOS)
- Android compatibility coming Late Summer 2026
Why Choose OnTrack?
Designed by motorsport enthusiasts, OnTrack TPMS gives you professional-grade tyre monitoring in a simple, portable package. While engineered to withstand the demands of circuit driving, it's just as valuable for everyday road use, helping you maintain correct tyre pressures, improve fuel efficiency, reduce tyre wear and drive with greater confidence wherever your journey takes you.
Bluetooth Low Energy Connectivity
The OnTrack External TPMS Sensors communicate wirelessly using Bluetooth Low Energy (BLE) technology, providing fast, reliable communication with the dedicated OnTrack App while maintaining excellent battery efficiency.
The intuitive app allows users to:
- View live tyre pressures
- Monitor tyre temperatures
- Display all four tyres simultaneously
- Set custom pressure alerts
- Set temperature warnings
- Monitor tyre performance throughout every driving session
The free app is currently available for iOS, with Android compatibility coming late Summer 2026.