Metelli PA380 Engine Water Pump

Engine Water Pump for BMW Cooling Service

The Metelli PA380 engine water pump is a new replacement part for BMW cooling system service. It features an aluminium housing, cast iron impeller, and a roller/ball bearing design for dependable coolant circulation in supported BMW applications.

Key Features

• New engine water pump with gasket included
• Aluminium housing for corrosion-resistant construction
• Cast iron impeller with 14 vanes
• Roller/ball bearing design with 30 mm bearing outside diameter
• Impeller outside diameter: 78 mm
• Direct replacement for select BMW 528i, 533i, 535i, 535is, 635CSi, 735i, 735iL, M5, and M6 applications

Detailed Description

Metelli PA380 is an OE-style engine water pump built for BMW cooling systems that require a precise coolant flow path and durable internal components. The aluminium housing and cast iron impeller support long-term service in classic BMW 5 Series, 6 Series, 7 Series, and M models, including 1980-1981 BMW 528i, 1983-1984 BMW 533i, 1985-1993 BMW 535i, 1985-1989 BMW 635CSi, 1987-1992 BMW 735i, 1988-1992 BMW 735iL, 1988 BMW 535is, 1988 BMW M5, and 1987-1988 BMW M6. This part number, PA380, is also referenced for the same application under cross-reference numbers such as Airtex AW9117 and Beck/Arnley 131-2400.

What It Helps Address

• Coolant circulation problems caused by a worn pump
• Overheating from reduced water pump output
• Coolant leaks at the pump sealing surface
• Bearing noise or shaft play from a failing pump assembly
• Service replacement on BMW cooling systems with the correct gasket included

Installation Notes and Tips

Confirm engine code and cooling system configuration before installation. This PA380 water pump includes a gasket, so the sealing surface should be cleaned thoroughly before assembly. On the 1980-1981 BMW 528i application, the fitment note specifies installation without disengaging the fan. Always inspect the thermostat, hoses, and coolant condition during water pump replacement to complete the repair properly.

Quality Assurance

Metelli supplies new cooling components built to match the requirements of the listed BMW applications. PA380 is constructed with an aluminium housing, cast iron impeller, and roller/ball bearing support for consistent service in the specified fitments.