Mercedes-Benz B-Class W245 M266 Engine Water Pump | 2005–2011 | B180 B200 Coolant Pump Spares

Description

Maintain optimal engine operating temperatures, consistent thermal regulation, and total mechanical reliability with this premium Mercedes-Benz W245 Engine Coolant Water Pump. 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 cooling component is the definitive replacement for a leaking, noisy, or failing mechanical water pump.

The Engine Water Pump is responsible for continuously circulating coolant throughout the engine block, cylinder head, and radiator pack to prevent terminal thermal buildup. Because the M266 engine features a highly compact design and sits at a distinct sloped angle inside Mercedes’ specialized sandwich-chassis safety frame, the mechanical components are subjected to high engine bay heat cycling and tight tolerances. Over time, the internal mechanical shaft seals wear out, leading to visible pink or green crusty coolant leaks around the front of the motor. Simultaneously, internal bearing degradation causes a distinct high-pitched whining or rumbling noise from the accessory drive area. Left unaddressed, bearing failure can cause the pump pulley to seize or wobble, throwing off the serpentine poly-V belt and causing rapid, catastrophic engine overheating. Replacing the pump restores reliable cooling flow.

Manufactured from high-grade die-cast aluminum to ensure superior structural integrity and corrosion resistance, this pump features a precision-engineered internal impeller designed to maximize fluid displacement without cavitating. The mounting face is machined to exact factory specifications to ensure a flush, leak-free seal against the engine block, and the pre-installed pulley wheel aligns perfectly with the original M266 belt line. Trust TP German Auto Spares for verified, workshop-tested cooling system components and engine accessories 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).

• High-Flow Impeller: Optimized blade geometry delivers factory-specified coolant flow rates across the entire RPM range.

• Heavy-Duty Bearings: Features hardened steel internal shafts and premium bearings to withstand constant drive belt tension and heat.

• Direct Bolt-On Fitment: Cast mounting holes and line connections line up perfectly with original factory hard lines and block apertures.

• Condition: Thoroughly inspected for zero casting flaws, smooth bearing rotation, uncompromised pulley tracking, and pristine gasket surfaces.