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Garrett GT/GTX Series Turbocharger Speed Sensor Kit 781328-0002

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Select GTX turbochargers come standard with a fully machined speed sensor port. Just remove the bolt and screw in the appropriate kit for your application. GT/GTX speed sensor kit not applicable to G Series turbochargers.

The Garrett Turbocharger Speed Sensor works with any turbocharger to accurately determine compressor wheel speed. The instructions include detailed drawings of the exact machining specifications for all Garrett® GT catalog turbochargers as well as general guidelines for other compressor housing types. The Garrett Turbocharger Speed Sensor Kit includes all necessary wiring for easy installation and simple data logging.  The Garrett street kits include a shaft speed gauge, the pro kit is designed for data logging and does not include a gauge.

Maximum Performance

Comparing boost levels and shaft speed on a compressor map, you can determine the ideal operating conditions to insure peak power over a wider operating range. All Garrett Turbocharger Speed Sensor Kits are compatible with data loggers to enhance engine tuning capability. In addition, the Garrett-branded gauge’s maximum speed recall function will retain the highest wheel speed for five minutes for easy mapping.

The data gained from the Garrett Turbocharger Speed Sensor Kit can be used to closely estimate the engine’s flow behavior without a flow bench. Flow information is invaluable for determining if the turbocharger is reaching its maximum performance, for validating the turbo match, and for ensuring that it is not over-speeding, allowing you to avoid potentially damaging operating conditions.

This kit could even be used in conjunction with an aftermarket ECU to limit compressor speed. The Garrett Turbocharger Speed Sensor Kit will help you be sure you’ve got the correct turbo for your needs!


The Pro Kit includes the Speed Sensor, Wiring Harness, installation instructions and fasteners, and detailed machining drawings for all GT and GTX compressor housings


The Street Kit includes everything in the Pro Kit plus a Shaft Speed Gauge


Speed Sensor Street Kit: GT/GTX Models Part Number: 781328-0001
Speed Sensor Pro: GT/GTX Models Part Number: 781328-0002
Speed Sensor Street Kit: G Series Models Part Number: 781328-0003
Speed Sensor Pro: G Series Models Part Number: 781328-0004