Gates 42358 Engine Water Pump - Main

Engine Water Pump for BMW Applications

Gates water pump 42358 is a standard replacement engine water pump built for BMW applications that require a reverse-rotation, accessory-belt-driven design. It is listed for BMW 230i, 330i, 430i, and 530i coverage, along with select xDrive and Gran Coupe applications.

Key Features

• Cast aluminum housing for strength and corrosion resistance.
• Plastic impeller with reverse rotation for the specified cooling system design.
• Pulley included for a complete pump assembly.
• Accessory belt drive type; timing belt driven: no.
• Rubber gasket, pulley, bolts, and plunger listed in the contents.
• 100% seal, bearing, and leakage testing per Gates manufacturing standards.

Detailed Description

This Gates engine water pump is engineered as a direct-fit cooling system replacement for a wide range of BMW models, including the 2016-2018 BMW 330i, 2017-2020 BMW 430i, and 2017-2019 BMW 530i. The cast aluminum body, reverse-rotation impeller, and accessory belt drive layout match the application requirements for proper coolant circulation. Part number 42358 is also cross-referenced to Dorman - HELP 42358 for the same application.

Gates Water Pump (Standard) is the brand’s standard replacement line for cooling system service. It focuses on OE-quality fit and functional testing, making it a practical choice when replacing a worn pump on BMW 230i, BMW 430i, or BMW 530i applications.

What It Helps Fix

• Coolant circulation loss from a worn or leaking pump.
• Overheating caused by reduced water pump performance.
• Bearing noise or seal failure in the cooling system.
• Leakage at the pump casting or assembled unit.
• Drive issues related to a damaged pulley-equipped pump.

Installation Notes and Tips

Verify the vehicle’s pump configuration before ordering, since this listing includes N/A and Main positions with W/O Housing notes. Confirm reverse rotation, accessory belt drive, and housing requirements against the original part. Part number 42358 should be matched to the exact BMW application shown in the fitment data.

Quality Assurance

Gates tests each new water pump for seal and bearing function, then performs leakage testing on both the casting and assembled unit. The brand positions this Water Pump (Standard) line as an OE-quality replacement for dependable cooling system service.