Standard Ignition SC647 Automatic Transmission Input Shaft Speed Sensor

Automatic Transmission Input Shaft Speed Sensor for Pathfinder

Standard Ignition SC647 is an automatic transmission input shaft speed sensor built for direct replacement service on select Nissan applications. It uses a bolt-mount design with a single oval plug-in connector and included wiring harness for a clean electrical connection.

Compatible with 1996-2004 Nissan Pathfinder, this SC647 sensor supports accurate transmission speed signal input for drivability and shift control. It is a practical replacement choice when diagnosing transmission-related speed signal faults on Pathfinder models.

Key Features

• Automatic transmission input shaft speed sensor
• Bolt-mount attachment with one mounting hole
• Oval, male connector with plug-in type
• 3-wire design with 3 female blade terminals
• Black and silver finish
• Wiring harness included for the sensor connection
• Standard Ignition SC647 replacement part

Detailed Description

The Standard Ignition SC647 is engineered as an automatic transmission input shaft speed sensor for vehicles that rely on a precise transmission speed signal. On 1996-2004 Nissan Pathfinder models, this sensor helps the transmission control system monitor input shaft speed so the vehicle can manage shifting and related transmission functions. The bolt-mount layout, single connector interface, and included harness make it a straightforward OE-style replacement for service work on the Pathfinder platform. This part cross-references VSS1181 for the same application.

Common Issues This Part May Address

• Transmission speed signal loss or erratic input readings
• Harsh, delayed, or inconsistent shifting behavior
• Transmission warning lights related to speed sensor faults
• Diagnostic trouble codes tied to input shaft speed sensor performance
• Intermittent drivability concerns caused by inaccurate transmission data

Installation Notes and Tips

Verify connector shape, terminal count, and mounting style before installation. The SC647 uses a bolt-mount design with one mounting hole and a plug-in oval connector, so the replacement should match the original sensor interface on the vehicle. Inspect the harness connector and surrounding transmission area for corrosion, damaged wiring, or fluid contamination before installing the new sensor.

Quality Assurance

Standard Ignition is a recognized aftermarket brand for electrical and engine management components. The SC647 is built to match the specified sensor configuration for confirmed Nissan Pathfinder fitment from 1996 through 2004.