This is the 7347th most frequent Korean word.
차량용
For vehicle use.
차량용 in this context specifies that the parts are for vehicles.
차량용 부품이 품질이 좋습니다.
The vehicle parts are of good quality.
Here, 차량용 modifies GPS to specify that the GPS is designed for vehicles.
이 시스템은 차량용 GPS입니다.
This system is a vehicle GPS.
In this sentence, 차량용 describes the charger, indicating it is intended for use with vehicles.