Mercedes-Benz B-Class W245 M266 Throttle Body | 2005–2010!

Description

Restore crisp accelerator response, stable engine idling, and seamless power delivery to your vehicle with this premium Mercedes-Benz W245 Engine Electronic Throttle Body Assembly (Drive-by-Wire Throttle Actuator). Specifically sourced and verified for the first-generation B-Class (W245 platform) driven by the M266 4-cylinder petrol engine (found in B150, B170, B180, and B200 models from 2005 to 2010), this critical electronic induction unit is the definitive solution for vehicles suffering from engine hesitation, an erratic or surging idle speed, or sudden drop-offs into engine “limp mode.”

The Electronic Throttle Body is the primary gatekeeper of your engine’s air intake system, utilizing an internal electric servo motor and high-precision potentiometer sensors to open and close the butterfly valve based on data from your accelerator pedal. Because the M266 engine is packaged tightly inside Mercedes’ unique sloped sandwich-floor chassis, engine bay heat accumulation is highly concentrated. Over time, heavy carbon buildup and oily blow-by vapors from the PCV system coat the internal butterfly valve, causing it to stick. Simultaneously, the sensitive internal electronic gear tracks and electrical contacts wear down or short circuit. When this occurs, the Engine Control Unit ($ECU$) loses accurate throttle position tracking, triggering a Check Engine Light ($CEL$), limp home safety mode, and communication fault codes ($P0121$, $P2135$). Replacing the faulty unit entirely eliminates these electronic faults.

Manufactured with a high-durability die-cast aluminum housing and an impact-resistant electronic gear cover, this genuine replacement throttle valve is built to handle intense thermal cycling and vibration. It features a precision-balanced butterfly disc and a factory-matched multi-pin terminal connector plug that clips directly into the original M266 engine wiring harness loom. Trust TP German Auto Spares for fully verified, workshop-tested automotive electronics, fuel injection components, and air induction spares that preserve the premium reliability of your Mercedes-Benz.

Key Features:

• Vehicle Compatibility: Mercedes-Benz B-Class (W245 Platform) models from 2005 to 2010.

• Engine Fitment: Precision-matched for M266 naturally aspirated 4-cylinder petrol engines (B150, B170, B180, B200).

• Drive-by-Wire Precision: High-torque internal servo motor ensures immediate, millimeter-accurate butterfly valve actuation for smooth acceleration.

• Integrated TPS: Features built-in Throttle Position Sensors ($TPS$) to provide continuous, real-time tracking data to the engine management network.

• Heavy-Duty Housing: Rugged cast-aluminum barrel resists warping, maintaining a tight, leak-free seal with the intake manifold plenum.

• Condition: Extensively bench-tested via diagnostic scanners; chemically cleaned and verified for smooth spring return action and perfect pin conductivity.