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Standard Ignition SC275 Automatic Transmission Output Shaft Speed Sensor
| Brand | Standard Ignition 81-18304-00 |
|---|---|
| Fits | —4 vehicles |
Bolt-mount design. Installs securely with a single bolt mount and plug-in connector.
Two-wire sensor. Uses a simple 2-wire setup with blade terminals for reliable signal transfer.
Transmission speed sensor. Monitors output shaft speed for accurate transmission control.
Cross-references Beck/Arnley 090-5032, Four Seasons 75608 and Standard Ignition SC275 for the same application. See all 12.
Automatic Transmission Output Shaft Speed Sensor
Standard Ignition SC275 is an automatic transmission output shaft speed sensor built for direct bolt-mount installation on the transmission. It uses a 2-wire design with a rectangular male connector and female blade terminals for a straightforward plug-in electrical connection.
Compatible with 2000 Nissan Pathfinder and 1997-1999 INFINITI QX4 applications, this sensor helps provide the transmission speed signal used by the vehicle’s speedometer and related control systems. Standard Ignition SC275 is a practical replacement choice when the original output shaft speed sensor is worn, damaged, or sending an inaccurate signal.
Key Features
- Automatic transmission output shaft speed sensor for transmission speed signal monitoring
- Bolt mount attachment with a single mounting hole
- Rectangular male connector with plug-in connection
- 2-wire construction with female blade terminals
- Silver finish
- No hardware, mounting bracket, or wiring harness included
Detailed Description
Standard Ignition SC275 is engineered as an OE-style transmission sensor for vehicles that rely on an output shaft speed signal to support speedometer operation and transmission control. In 2000 Nissan Pathfinder and 1997-1999 INFINITI QX4 applications, the sensor mounts on the transmission and sends the speed information needed for accurate vehicle speed reporting. This part cross-references Beck/Arnley 090-5032 and Four Seasons 75608 for the same application. The SC275 part number is also commonly searched by drivers looking for a replacement transmission speed sensor for Nissan Pathfinder and INFINITI QX4 models.
Common Problems This Sensor Can Address
- Inoperative or erratic speedometer readings
- Transmission speed signal faults
- Intermittent shifting concerns related to speed input
- Check engine light triggered by speed sensor circuit issues
- Transmission-mounted sensor failure from age or wear
Installation Notes and Tips
Install SC275 on the transmission using the bolt-mount design and verify the connector style matches the vehicle harness before installation. For 2000 Nissan Pathfinder and 1997-1999 INFINITI QX4 vehicles, confirm the existing sensor location and connector configuration before purchase to ensure proper fitment. Inspect the connector, terminals, and surrounding wiring for corrosion or damage before connecting the new sensor.
Quality Assurance
Standard Ignition is a recognized aftermarket brand for electrical and engine management components. SC275 is built to meet the needs of direct replacement service for transmission speed sensor applications.
| Year | Make | Model | Drive Type | Position | Notes |
|---|---|---|---|---|---|
| 2000 | Nissan | Pathfinder | 4WD | N/A | To Speedometer, Mounted on Transmission |
| 1999 | INFINITI | QX4 | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 1998 | INFINITI | QX4 | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 1997 | INFINITI | QX4 | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
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