BMW VW Audi - Auxiliary Water Pump - Pierburg CWA 50-2 tested

BMW / VW / Audi Auxiliary Electric Water Pump – Pierburg CWA 50-2 (CWA50 series)

Genuine Pierburg CWA50-series electric auxiliary water pump (often listed/referenced as CWA 50-2). This is the compact, brushless OEM-style pump used for charge-air/intercooler cooling circuits, auxiliary coolant loops, and related systems on many BMW, Volkswagen, Audi, and related vehicles.

Key Features

• Brushless canned-motor design (maintenance-free, highly reliable)
• 12 V nominal (operating range typically 8–16 V)
• PWM speed control
• Flow rate approx. 25 L/min @ 0.53 bar / up to ~35 L/min @ 0.25 bar differential pressure
• IP67 protection rating
• Compact and lightweight (~1 kg)
• 20 mm inlet/outlet connections (removable nozzles in many versions; orientation adjustable)
• Designed for water/glycol coolant mixtures
• Wide temperature range (typically –40 °C to +110 °C coolant / higher ambient)

Typical Applications / Compatibility

Fits a wide range of BMW, VW, Audi (and related Group) vehicles where the Pierburg CWA50 auxiliary/charge-cooler water pump is specified. Common cross-references and OE numbers include (verify exact fitment for your vehicle):

• Pierburg: 7.06033.xx.0 series (e.g. 7.06033.31.0, 7.06033.32.0 and related)
• BMW examples: 11 51 7 566 335 and related CWA50 applications
• VW/Audi examples: 7P0 965 567, 8K0 965 567 A/B, 8K0 965 569, 4F0 965 569 and similar
• Porsche examples: 958 606 567 00

Always confirm fitment using your vehicle’s VIN, exact OE number, or a parts catalog. These pumps are used primarily for intercooler/charge-air cooling on turbocharged engines and certain auxiliary cooling circuits.

Why Choose This Pump?

Pierburg is an original-equipment supplier of electric water pumps to major European manufacturers. The CWA50 is a proven, durable unit that provides engine-speed-independent coolant flow for better thermal management, reduced emissions, and reliable performance under demanding conditions.

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