BMW E46 Radiator Coolant Water Pipe – OEM Cooling System Replacement, Restores Cooling System Reliability for 316i & 318i Models | Replaces Part No. 11531436407

Maintain proper coolant circulation and restore cooling system reliability with this OEM-style Radiator Coolant Water Pipe replacement for BMW E46 3 Series models. Designed to replace the factory coolant pipe, this component plays an important role in routing coolant between key cooling system components so the engine can maintain stable operating temperature and dependable cooling performance.

Over time, coolant pipes are exposed to constant heat cycles, pressure fluctuations, and long-term aging, which can lead to cracking, warping, seepage, leaks, and reduced cooling system efficiency. Once a coolant pipe begins to fail, it can lead to coolant loss, overheating concerns, warning lights, and potentially costly engine damage if left unaddressed. Replacing worn cooling system pipes before they fail is an important preventative maintenance step on aging E46 models.

This replacement water pipe is manufactured from durable automotive-grade materials and is designed to withstand demanding engine bay temperatures and cooling system pressures. The precision-molded construction helps ensure OEM-style fitment and secure connections for dependable, leak-free performance.

Whether you are repairing a coolant leak, replacing a worn cooling system component, or refreshing your cooling system as preventative maintenance, this direct-fit replacement helps restore factory cooling performance and long-term reliability without requiring modifications.

Key Features:

• Direct OEM Replacement: Designed to replace the factory radiator coolant water pipe on compatible BMW E46 models.
• Restores Proper Coolant Circulation: Helps maintain stable coolant flow and dependable cooling system efficiency.
• Helps Prevent Leaks and Overheating: Replacing a worn coolant pipe can help reduce the risk of coolant loss and temperature-related engine issues.
• Supports Stable Engine Operating Temperatures: Helps the cooling system function properly under normal and demanding driving conditions.
• High-Temperature and Pressure-Resistant Construction: Built to withstand repeated heat cycles and cooling system pressure.
• Precision-Molded OEM-Style Fitment: Designed to match the original routing and installation layout for secure fitment.
• Durable Automotive-Grade Materials: Built for dependable long-term service life in the engine bay.
• Ideal for Repairs and Preventative Maintenance: A smart replacement when refreshing aging E46 cooling system components.

FITMENT:

• BMW 3 Series – E46 Sedan
• BMW 3 Series – E46 Touring
• BMW 3 Series – E46 Coupe
• BMW 3 Series – E46 Convertible

Compatible with:
316i Sedan
316i Touring
318i Sedan
318i Touring
318i Coupe
318i Convertible

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

REPLACES PART NO.: 11531436407

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