Compression Spring BMW E46 M3 SMG II

The pressure sensor is located on the hydraulic unit of the M3 SMG II and measures the pressure of the hydraulic fluid.

Our refurbished pressure accumulators are equipped with a filling valve and freshly filled with nitrogen gas.

The accumulator is responsible to store the pressure of the SMG system for later access by the actuators. The piston type accumulator has two cells: one cell storing the hydraulic fluid and one cell containing a gas to create counterpressure. Both cells are separated by a moving piston. A broken accumulator causes the pump to prime permanently.

Important: You will need to pay a core charge (deposit) of 300,00€ which will be refunded when you return your used part. You can learn more here. This is a repair service (no purchase of a product). Our terms and conditions and the right of withdrawal for the order of services apply.

The temperature sensor is located on the hydraulic unit of the M3 SMG II and measures the temperature of the hydraulic fluid. Due to its location in a high temperature area, the sensors suffers often from damage and is a common problem.

Time to solve your SMG problems once and for all! With the Relocation Kit you can relocate the SMG hydraulic unit – away from the engine to the passenger side's 'drug bin'.

This offer includes a 170cm long wiring harness extension, equipped with the original plugs, automotive cables and conduit. The additional hydraulic hoses are available here.