Electrical Connectors

Here is an overview of connectors used in the engine harness or aftermarket upgrades.

Feel free to add partnumbers if you find them useful.

BMW M54 MAF Sensor

3-pin Junior Mini Timer 2.8mm

Plug: 12521427222 (BMW)

Pin: 12521427612

Cover: 12521707749

Pin 1	M_HFM (Sensor Ground)
Pin 2	A_HFM (MAF Signal Output)
Pin 3	U_HR (+12V Voltage Input)

BMW M54 Throttlebody

Plug: 1J0973713 (VAG) / 12527505669 (BMW)

Socket: 3B0973813 (VAG)

Pin 1	A_DKG1 (Potentiometer 1)
Pin 2	U_DKG (Sensor Supply Voltage +5V)
Pin 3	T_MDK1 (Actuator 1)
Pin 4	A_DKG2 (Potentiometer 2)
Pin 5	T_MDK2 (Actuator 1)
Pin 6	M_DKG (Sensor Ground)

BMW B58 Thottlebody (13548623324)

The B58 throttlebody adapts perfectly with the MS43 and can therefore be used incase anyone wants to use B58 manifold.

Plug: 12527635615 (BMW)

Pins: 61138600419 (BMW)

Pin 1	T_MDK1 (Actuator 1)
Pin 2	T_MDK2 (Actuator 2)
Pin 3	A_DKG1 (Hall Sensor 1)
Pin 4	M_DKG (Sensor Ground)
Pin 5	U_5V_1 (Sensor Supply Voltage +5V)
Pin 6	A_DKG2 (Hall Sensor 2)

BMW B58 TMAP Sensor (13628637900)

Plug: 18302411427 (BMW) (8 509 441-02)

AliExpress: 7549032-02

Pin 1	A_TNDK (Temperature Signal After Throttlebody)
Pin 2	U_5V_2 (Sensor Supply Voltage +5V)
Pin 3	M_PNDK (Sensor Ground)
Pin 4	A_PNDK (Absolute Pressure Signal After Throttlebody)

Audi RS4 MAF Sensor (0280218067)

Plug: 1J0973775A (VAG)

Socket: 1J0973824 (VAG)

Pin 1	IAT Sensor Output
Pin 2	+12V Voltage Input
Pin 3	Common Ground
Pin 4	+5V Input Voltage
Pin 5	MAF Sensor Output