Reference OE/OEM Number 8 KERR NELSON ECS009, KW 530 252, LEMARK LWS068. Reference OE/OEM Number 13 RENAULT 77 00 101 968, RENAULT 77 00 103 348. The Engine Manifold Coolant Temperature Sensor (Eng. This information is essential for regulating fuel injection, ignition timing, and ensuring optimal engine performance and efficiency. ).