Metelli PA1126 Engine Water Pump

Overview of Metelli PA1126 Engine Water Pump

The Metelli PA1126 engine water pump is designed specifically for BMW 335d and X5 models, ensuring reliable cooling system performance. This new water pump includes a pulley and gasket, providing a complete replacement solution for your vehicle's cooling needs.

• Includes pulley with 6 grooves and 18 mm width
• Aluminium housing for lightweight durability
• Brass impeller with 7 vanes and 66.5 mm diameter
• Roller/ball bearing with 30 mm outside diameter for smooth operation
• Comes with gasket for proper sealing
• New, not remanufactured

Technical Details and Construction

The Metelli PA1126 water pump features an aluminium housing that offers corrosion resistance and reduced weight, contributing to overall engine efficiency. The brass impeller, equipped with seven vanes and measuring 66.5 mm in diameter, is engineered to optimize coolant flow through the engine. The included pulley has six grooves and an 18 mm width, designed to match the belt system of compatible BMW models. The roller/ball bearing with a 30 mm outside diameter ensures reliable rotation and longevity under operating conditions. This water pump is supplied new and includes a gasket to ensure a secure, leak-free installation.

Compatible Vehicles and Applications

This engine water pump is compatible with the following BMW models:

• BMW 335d
• BMW X5

It is intended for use in the engine cooling system to maintain optimal engine temperature and prevent overheating.

Common Issues Addressed by the Metelli PA1126 Water Pump

• Engine overheating due to coolant circulation failure
• Coolant leaks from worn or damaged water pump seals
• Noise or rough operation caused by failing bearings
• Reduced cooling efficiency from impeller damage or corrosion
• Pulley wear affecting belt alignment and tension

Installation Notes and Tips

When installing the Metelli PA1126 water pump, ensure the gasket is properly seated to prevent leaks. Verify that the pulley grooves align correctly with the belt to maintain proper tension and avoid premature belt wear. It is recommended to inspect the belt and related components during installation and replace if necessary. Follow manufacturer torque specifications for mounting bolts to avoid damage to the aluminium housing.

Quality Assurance and Warranty

The Metelli PA1126 water pump is a new, high-quality replacement part manufactured to meet OEM specifications for BMW 335d and X5 models. It includes a gasket and pulley for a complete installation. While specific warranty details may vary, Metelli products typically come with a limited warranty covering defects in materials and workmanship. Always consult the product documentation or supplier for exact warranty terms.