Get the Best Priced BMW 330Ci Expansion Tank

BMW 330Ci Expansion Tank

You chose your 330Ci for unmatched luxury and consistent performance in high-stress situations. Maintain the initial value of your 3-series by performing regular checks of the coolant system. This system is responsible for maintaining the optimum conditions for your precision-designed motor. Your BMW 330Ci expansion tank plays an integral part in keeping your engine operating safely, so replace it if you notice leaks or other damage.

We have millions of parts and accessories at PartsGeek.com, and they're all available at discounts of up to 80% off. Get all of your BMW coolant system components here, from hoses to radiator supports. Everything's covered by a 30-day return policy, so order today.

What is a BMW 330Ci expansion tank?

As your engine heats up and the contents of the radiator expand, pressure is exerted against the inner walls of the system. Sometimes, this pressure causes radiator fluid to expand to the point where it needs somewhere to go. In the old days, this might cause the radiator cap to blow off. Modern vehicles like your 330Ci have an overflow tank to prevent loss of coolant and damage to the sensitive sensors and electronics located in your engine compartment.

How much is a new BMW 330Ci expansion tank?

These parts are relatively simple, and tend to cost somewhere between $35-120. The price depends on the model year of your 3-series and the company that manufactures the part. Make sure to inspect all of your hoses when you replace your expansion tank: you save money doing all the coolant system work you need at once.

What are the signs of a failed BMW 330Ci expansion tank?

The most noticeable sign of a bad BMW 330Ci expansion tank is visible leaks. It's also important to keep an eye out for:

• Quickly dropping coolant levels
• Engine temperature lights
• Low coolant levels
• Wet spots around or beneath the tank

If you see any of these, you might have a leak somewhere in your coolant system. Do a thorough inspection and replace any parts that are worn or aged.