Here’s a detailed description for the Mercedes-Benz C-Class W203/W204 1.8L M271 Kompressor engine throttle body:

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Throttle Body Description

Model Compatibility:

• Mercedes-Benz C-Class W203 / W204
• Engine: 1.8L M271 Kompressor (supercharged)
• Applicable years: approx. 2002–2014
• Common models:
  
• C180K / C200K / C230K
• 
  

Part Name:

Electronic Throttle Body / Throttle Valve Assembly

Function:

Controls the amount of air entering the engine based on accelerator pedal input. It works together with the ECU (Engine Control Unit) to regulate engine speed, power, and fuel efficiency.

Type:

• Fully electronic (Drive-by-wire, no throttle cable)
• Integrated throttle position sensor and actuator motor

Description / Features:

• Aluminum housing with precision butterfly valve
• Built-in electric actuator motor for throttle plate movement
• Equipped with dual throttle position sensors for feedback and safety
• Works with Bosch ME-SFI ECU system
• Connected to air intake hose and intake manifold
• Controlled via ECU signal based on accelerator pedal position

Common OEM / Part Numbers:

• A271 141 02 25
• A271 141 03 25
• A271 141 05 25
• (Bosch equivalent: 0 280 750 474 or similar depending on year/model)

Common Symptoms of Faulty Throttle Body:

• Rough idling or stalling
• ''ESP / EPC'' or ''Check Engine'' warning light
• Loss of throttle response
• Engine limp mode activation
• Erratic acceleration

Would you like me to include the airflow direction and connector pin description (electrical side) for workshop or wiring reference?