BMW Engine Water Pump – OEM Cooling System Replacement, Restores Cooling System Performance for E34, E36, E46 & Z3 Models Including 320i, 323Ci, 325i, 330i & 525i | Replaces Part No. 11517509985

Restore reliable cooling system performance and maintain proper engine operating temperatures with this OEM-style Engine Water Pump replacement for select BMW E34, E36, E46, and Z3 models. Designed to circulate coolant throughout the engine and radiator system, the water pump is one of the most critical components in the cooling system and plays a major role in preventing overheating and preserving long-term engine reliability.

Over time, factory water pumps can develop bearing wear, impeller failure, seal deterioration, or coolant leaks. When that happens, coolant circulation can become weak or inconsistent, which may lead to overheating, coolant loss, poor temperature control, and potentially severe engine damage if left unaddressed. Replacing a worn water pump is one of the most important preventative maintenance services you can perform on an aging BMW cooling system.

Manufactured to meet OEM-style specifications, this replacement water pump is built for dependable coolant flow, precise fitment, and long service life. Constructed from high-quality materials designed to withstand repeated heat cycles and cooling system pressure, it helps restore factory cooling performance and dependable operation.

Whether you are performing a full cooling system overhaul, replacing a leaking pump, or correcting overheating concerns, this direct-fit replacement helps restore proper coolant circulation and stable engine temperature control without requiring modifications.

Key Features:

• Direct OEM Replacement: Designed to replace the factory engine water pump on compatible BMW applications.
• Restores Proper Coolant Circulation: Helps maintain stable coolant flow throughout the engine and radiator system.
• Helps Maintain Optimal Engine Temperatures: Supports proper cooling system performance under daily driving and demanding conditions.
• Supports Reliable Cooling System Operation: A critical replacement component for preserving cooling system efficiency and long-term engine health.
• High-Quality Bearing and Seal Construction: Built for dependable operation and reduced risk of premature failure.
• Designed for Demanding Conditions: Made to withstand repeated heat cycles, coolant pressure, and engine bay stress.
• OEM-Style Fitment and Function: Built to match the original installation layout and factory performance.
• Ideal for Cooling System Repairs and Preventative Maintenance: A smart replacement when servicing aging BMW cooling components.

FITMENT:

• BMW 3 Series – E36 Sedan, Coupe, Convertible
  Compatible with 320i, 323i, and 325i Sedan / Coupe / Convertible models.
• BMW 3 Series – E46 Sedan, Coupe, Touring, Convertible
  Compatible with 323Ci Coupe / Convertible, 323i Sedan / Touring, 325Ci Coupe / Convertible, 325i Sedan / Touring, 325xi Sedan / Touring, 330Ci Coupe / Convertible, and 330i Sedan / Touring models.
• BMW 5 Series – E34 Sedan, Touring
  Compatible with 525i Sedan and Touring models.
• BMW Z3 – Roadster, Coupe
  Compatible with Z3 2.3, Z3 2.5i, Z3 2.8, and Z3 3.0i models.

Engine compatibility:
M52 inline-6
M52TU inline-6
M54 inline-6

If you’re unsure whether this water pump fits your specific vehicle, please contact us with your VIN and we’ll be happy to verify compatibility before you order.

Replaces Part No. 11517509985
Additional Cross References: 11517527799, 11517527910

Please refer to the “Fitment” section in the product description for compatibility details.