The Womala Coolant Expansion Tank (Part Number: 17139846642) is a vital component of the vehicle’s engine cooling system, designed to manage coolant overflow and maintain proper pressure within the radiator. It plays a critical role in ensuring the engine operates at optimal temperatures by allowing space for the coolant to expand and contract as it heats and cools.

Vehicle Applications:
This expansion tank is specifically engineered for the following models:

• X5

• X6

• 550i

• 650i

• 750Li

• 750i

Installation Location:
The coolant expansion tank is located in the engine bay, typically mounted near the radiator or fender on the passenger side, depending on the model. It connects directly to the cooling system via hoses, allowing coolant to move between the radiator and the tank during temperature fluctuations.

Product Features:

• OE-Style Fitment: Engineered to match the original design and dimensions for straightforward installation.

• Transparent Reservoir: Allows easy monitoring of coolant levels at a glance.

• High-Strength Construction: Made from durable plastic composite materials that resist cracking, warping, and thermal fatigue.

• Pressure Regulation: Equipped with proper fittings and cap connections to help maintain system pressure and prevent leaks.

• Heat-Resistant Design: Built to endure high engine temperatures without deforming or losing integrity.

• Prevents Overheating: Supports the radiator in regulating temperature and avoids coolant spillage during thermal expansion.

• Essential for Turbocharged Engines: Designed to meet the cooling demands of high-performance models.

This Womala expansion tank is ideal for replacing worn or leaking coolant reservoirs, helping extend the lifespan of your vehicle’s cooling system and ensuring stable engine performance.