Throttle Position Sensor 403300B / 403344B / 403951A for Volvo FH/FM Trucks with D12 & D13 Engines 1998–2010Product Overview Part Name: Throttle Position Sensor (TPS) Part Numbers: 403300B, 403344B, 403951A Vehicle Compatibility: Volvo Trucks FH12, FH13, FM9, FM12, FM13 with D12 and D13 diesel engines (19982010). Configuration: OEM style electronic throttle position sensor designed to measure throttle valve angle and send signals to the ECU for precise engine control. Function: Provides accurate throttle input data to the engine control module (ECM),