Garrett 781328-0003 G-Series Turbo Speed Sensor Kit w/Gauge

Vehicle Fitment

• Universal application
• Fits Garrett G-Series, GTX55 Gen II, GTX50 Gen II, and GTX47 Gen II turbochargers with the factory speed sensor port
• Street kit configuration with gauge
• Not vehicle-specific; compatibility depends on turbocharger model and compressor housing sensor provision
• Can be used on custom turbo systems and vehicle-specific turbo kits that call for Garrett speed sensor kit 781328-0003
• Do not assign direct year/make/model fitment unless the exact Garrett turbocharger using this kit is separately verified
• Confirmed by Garrett accessory catalog and Garrett installation instructions for G-Series Street Kit applications
• Fitment through 2025 is turbo-application-based rather than vehicle-specific

Features

• Garrett turbo speed sensor street kit with analog gauge
• Designed to monitor turbocharger shaft speed
• Helps protect against turbo overspeed in monitored applications
• Compatible with Garrett G-Series and selected Gen II turbocharger families
• Includes sensor, harness, mounting hardware, and Garrett-branded gauge
• Installs into the machined speed sensor port on supported compressor housings
• Useful for performance tuning, diagnostics, and system monitoring
• Street kit version includes display gauge for in-vehicle monitoring
• Garrett-engineered accessory for supported performance turbochargers
• Suitable for custom street and track turbo builds using supported Garrett units

Specifications

• Part Number: 781328-0003
• Brand: Garrett
• Product Type: Turbo speed sensor street kit
• Kit Type: Street kit with gauge
• Turbo Compatibility: G-Series, GTX55 Gen II, GTX50 Gen II, GTX47 Gen II
• Sensor Provision Requirement: Garrett machined speed sensor port
• Includes Gauge: Yes
• Includes Harness: Yes
• Includes Sensor: Yes
• Includes Mounting Bolt/Hardware: Yes

Included Components

• 1x turbo speed sensor
• 1x wiring harness
• 1x Garrett-branded speed gauge
• 1x installation hardware set
• 1x installation instruction sheet

Product Description

The Garrett 781328-0003 is a G-Series Street turbo speed sensor kit that includes a gauge for monitoring turbocharger shaft speed on supported Garrett performance turbochargers. Rather than being vehicle-specific, this kit is matched to turbocharger families that use Garrett's machined speed sensor port, including G-Series, GTX55 Gen II, GTX50 Gen II, and GTX47 Gen II applications.

This street kit is intended for builders and tuners who want real-time turbo speed data for diagnostics, tuning, and overspeed monitoring. Garrett catalogs this version as the kit with gauge, while the corresponding pro kit variant is sold separately without the same street-gauge package. The kit includes the sensor, harness, gauge, and required hardware for supported Garrett turbocharger installations.

This product does not change vehicle ride height, so no front or rear lift/drop height applies. Because 781328-0003 is a turbocharger accessory rather than a vehicle-direct-fit component, always verify the exact Garrett turbo model, sensor port provision, gauge mounting plan, and wiring layout before installation.