Pump Reservoir Seal BMW E46 M3 SMG II
30,25 €
plus Shipping Costs
New seal for the hydraulic pump plastic reservoir. The seal meets the requirements for use in the SMG hydraulic system.
- Condition: New
- Compatible vehicles: BMW E46 M3
- Reference numbers: BMW 21532229715, 21532282257
In stock
Related Products

Wiring Pin Release Tool BMW E46 M3 SMG II
Our pin extraction tool is essential for the replacement of the E46 M3 BMW SMG II pump motor. Designed specifically for safely extracting the motor’s pin contacts from the round connector, this tool ensures a precise and damage-free removal process. It is ideal for workshops and mechanics conducting routine maintenance on E46 M3 SMG II systems.

Control Unit M3 SMG II
The transmission control unit (ECU / TCU) is the main computer responsible for the control of the M3 SMG II.

Transmission Speed Sensor BMW E46 M3 SMG II
This sensor provides the speed signal of the transmission input shaft. The speed signal is required by the SMG control unit to control the transmission system, adjusting properly the shaft speeds before engaging and disengaging the different gears.

Temperature Sensor BMW E46 M3 SMG II
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.

Hydraulic Unit Pump Motor BMW E46 M3 SMG II
The pump supplies the hydraulic pressure for the different consumers (actuators) of the SMG and stores it in the pressure accumulator. The pump consists of a gear pump and the powering electric motor. Due to its location in a high temperature area, the motor suffers often from damage and is a common problem. Especially on hot days the car can drop out of gear or show the gearbox warning light (SMG cog light). Often the following codes appear in the error memory:
- 56 (0x38) Switching-on time of hydraulic unit
- 53 (0x35) low level of pressure reached HE
- 57 (0x39) Misuse of hydraulic unit
- 55 (0x37) Switching-on frequency of hydraulic unit
No worry – here is a solution for these problems!
We provide a new motor for the pump as a solution for various problems with the BMW M3 SMG II. The motor meets highest expectations of quality and enables a sporty style of driving with frequent shifting. Of course, the motor comes with a 12 month warranty.
The old motor can be replaced by the new one “plug&play“. The replacement motor is already equipped with the required pins and can be directly connected to the original wiring harness. For removing the old motor, you may need a release tool.

Clutch / Selection Solenoid Valve BMW E46 M3 SMG II
New clutch / selection solenoid valve for the E46 M3 SMG II. There are two of these flow-proportional solenoid valves on the hydraulic unit: one for clutch control and another one for gear selection. If one of these two valves fails, the SMG can no longer correctly open and close the clutch or shift gears.

Pump Relay BMW E46 M3 SMG II
The pump relay is responsible to turn on / off the hydraulic pump of the SMG system. A broken relay causes the pump to fail priming. Without hydraulic pressure, the system cannot engage the clutch or change gears.
Pictures shown are for illustration purpose only. The relay supplied may have a different color.

Hydraulic Lines for Relocation Kit BMW E46 M3 SMG II
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 set of 4 hydraulic lines with each 190cm length. The lines are made-in-Germany from braided stainless steel, fitted with the proper connections for plug & play installation. You can find the additional wiring harness extension here.
Your wanted part is not listed in the shop? Maybe we can repair it. Have a look at our repairs section!







