Mercedes-Benz B-Class W245 M266 Crankshaft Pulley | 2005–2011 | B180 B200 Harmonic Balancer Spares

Description

Restore smooth engine operation, precise accessory drive tracking, and long-term mechanical reliability to your vehicle with this premium Mercedes-Benz W245 Crankshaft Pulley (Harmonic Balancer). Specifically sourced and verified for the first-generation B-Class (W245 platform) equipped with the M266 4-cylinder petrol engine (found in B150, B170, B180, and B200 models from 2005 to 2011), this vital engine component is the definitive replacement for a cracked, wobbling, or separating main pulley.

The Crankshaft Pulley / Harmonic Balancer plays a dual role in the uniquely designed M266 engine, which sits at a distinct angle due to Mercedes’ sandwich-chassis safety design. It drives the serpentine poly-V belt that powers essential accessories like the alternator, water pump, and air conditioning compressor. Simultaneously, it acts as a torsional vibration dampener. It features a specialized vulcanized rubber ring sandwiched between the inner steel hub and the outer grooved belt track. Over time, constant engine heat, oil leaks, and high mileage cause this rubber layer to dry out, rot, and split. When the dampener fails, the pulley will begin to wobble, shredding drive belts, creating severe engine vibrations, and risking a catastrophic failure where the outer ring detaches completely and destroys surrounding engine components.

Manufactured from high-strength cast steel to exact factory dimensions, this pulley features precision-machined grooves that guarantee perfect alignment with your accessory drive belt system. The central mounting bore is engineered to slot seamlessly onto the nose of the M266 crankshaft, preserving original balance parameters and protecting your engine’s main bearings from destructive harmonic frequencies. Trust TP German Auto Spares for verified, workshop-tested engine mechanical components that keep your Mercedes-Benz driving smoothly on South African roads.

Key Features:

• Vehicle Compatibility: Mercedes-Benz B-Class (W245 Platform) models from 2005 to 2011.

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

• Harmonic Damping: Features a high-density, heat-stabilized elastomeric rubber core designed to absorb severe torsional crankshaft vibrations.

• Precision Grooves: Exact poly-V belt track profile prevents belt slippage, squealing, and premature wear.

• Chassis Protection: Balances the unique rotational forces of the angled sandwich-concept powertrain.

• Condition: Extensively inspected for zero rubber separation, hairline metal fractures, track scoring, or keyway damage.