Metelli PA1027 Engine Water Pump

Reliable Engine Water Pump for Mercedes-Benz Models

The Metelli PA1027 engine water pump is designed to maintain optimal cooling performance for a range of Mercedes-Benz vehicles. Engineered with durable materials and precise specifications, this water pump ensures efficient coolant circulation and reliable operation.

• Includes pulley with 6 grooves and 24 mm width for proper belt alignment
• Aluminium housing for lightweight strength and corrosion resistance
• Metal impeller with 5 vanes and 59 mm outside diameter for effective coolant flow
• Roller/ball bearing with 30 mm outside diameter for smooth rotation and durability
• Comes with gasket to ensure a secure, leak-free installation
• New, not remanufactured, for consistent performance

Technical Details and Construction

The Metelli PA1027 water pump features a robust aluminium housing that offers excellent heat dissipation and resistance to corrosion, critical for maintaining engine temperature stability. The metal impeller, equipped with five vanes and measuring 59 mm in diameter, is designed to optimize coolant flow through the engine’s cooling system. The included pulley has six grooves and a width of 24 mm, ensuring compatibility with the serpentine belt system on applicable Mercedes-Benz models. The roller/ball bearing with a 30 mm outside diameter supports smooth and reliable operation, reducing wear and extending the pump’s service life. This water pump is supplied new and includes a gasket to facilitate a proper seal during installation.

Compatible Mercedes-Benz Models

This engine water pump is compatible with a variety of Mercedes-Benz vehicles, including the C230, C280, C300, C350, CLK350, E280, E350, GLK350, ML350, R350, S400, SLK280, SLK300, and SLK350. The PA1027 part number ensures precise fitment and performance for these models, making it a suitable replacement part for maintaining your vehicle’s cooling system.

Common Issues Addressed by This Water Pump

• Overheating caused by coolant circulation failure
• Coolant leaks due to worn or damaged seals
• Noise or rough operation from failing bearings
• Reduced engine efficiency from impeller damage
• Pulley misalignment affecting belt tension and performance

Installation Notes and Tips

When installing the Metelli PA1027 water pump, ensure the gasket is properly seated to prevent coolant leaks. Verify the pulley grooves align correctly with the serpentine belt to maintain proper belt tension. It is recommended to inspect the belt and related components for wear during installation. Use manufacturer torque specifications for mounting bolts to avoid damage to the aluminium housing. Proper installation will help maintain engine cooling efficiency and prevent premature pump failure.

Quality Assurance and Warranty

Metelli manufactures the PA1027 water pump to meet strict quality standards, using durable materials such as aluminium and metal impellers. The new condition of the pump guarantees consistent performance without the uncertainties of remanufactured parts. While specific warranty details may vary, Metelli products typically come with a limited warranty covering defects in materials and workmanship, providing confidence in the product’s reliability.