Description
Genuine HELLA BEHR electronic blower motor regulator (power transistor resistor), part number 5HL351321175. It is the original OEM component for Mercedes-Benz W210 E-Class with automatic climate control. This solid-state power control module adjusts the blower fan speed steplessly according to climate control signals. Two fully interchangeable Mercedes OE numbers: A2108211651 and A2108206410. Built with thick aluminum heat sink for heat dissipation, it prevents overheating and burnout. Direct plug-and-play installation without modification, perfectly matching the original wiring plug and mounting holes.
Cross Reference Part Numbers
- HELLA BEHR OE Code: 5HL351321175
- Mercedes-Benz OEM Part Numbers
- A2108211651 (2108211651)
- A2108206410 (2108206410)
Exact Vehicle Fitment
Mercedes-Benz E-Class (W210)
- Model: E 240, Chassis Code: 210.062
- Engine: M 112.914 V6 petrol engine
- Production Period: 2000.08 – 2002.03
Fit all LHD & RHD W210 sedans equipped with automatic air conditioning system.
Technical Specifications
- Operating Voltage: DC 12V
- Structure: Solid-state electronic regulator with cast aluminum heat sink
- Connector: 3-pin OEM matching plug
- Cooling Structure: Fin-type heat sink to dissipate power heat
- Mounting: 2 bolt fixed points matching the heater box
- Quality Standard: HELLA BEHR European OEM production standard, overheat protection circuit built-in
- Application: Only for automatic climate control (not manual AC models)
Core Functions
- Steplessly adjust blower fan speed for cabin heating and air conditioning
- Receive PWM signal from climate control ECU to stabilize airflow volume
- Prevent blower motor burnout caused by overcurrent
- Maintain stable temperature regulation of automatic HVAC system
Common Malfunctions Resolved
- Blower fan only runs at full speed with no speed adjustment
- Fan stops working completely; no airflow from vents
- Module overheating causes intermittent fan cut-off
- Burnt resistor leads to blown fuses
- ECU stores blower control circuit fault codes
- Abnormal burning odor inside the dashboard
Product Advantages
- Original HELLA BEHR Tier-1 OEM component, same quality as factory fitted parts
- Thick cast aluminum heat sink effectively reduces operating temperature and extends service life
- Exact OEM plug and mounting size, no wiring changes required
- Built-in overcurrent and overheat protection circuit to avoid repeated burnout
- Two interchangeable Mercedes OEM numbers reduce inventory SKU
Package Includes
1 × HELLA BEHR A/C Blower Regulator Resistor (5HL351321175)
Installation Guidance
- Disconnect vehicle 12V battery negative terminal before disassembly
- Remove passenger glove box to access the blower regulator
- Replace the blower motor synchronously if the motor is stuck or stiff
- Test all fan speed levels after installation and clear HVAC fault codes
Warehouse SKU
MB-REGULATOR-BEHR-5HL351321175-W210-E240-M112914
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