Known Applications by Vehicle System

This connector is widely used in:

- GM LS-series coil packs – ignition control
- Toyota TPS (Throttle Position Sensor) – engine management
- Nissan CAS (Crank Angle Sensor) – round and square variants
- VW MP9 water temperature sensors – coolant monitoring
- HOWO A7 trucks – odometer/speed sensor systems

Because of its universal design, this connector appears in Opel, Toyota, Nissan, VW, GM, and Chinese truck platforms, especially in models from the late 1990s to early 2010s.

> 4-Pin Automotive Electrical Connector – R4 Series  
> This connector features four circular pin sockets arranged in a compact 2x2 grid, housed in a rugged black thermoplastic shell. Marked with “R4” and pin indicators, it is engineered for secure mating with ignition and sensor modules. Widely adopted across GM, Toyota, Nissan, VW, and HOWO platforms, it supports robust electrical continuity in demanding automotive environments. Ideal for coil packs, throttle sensors, and crank angle sensors.