BMW 850CSI Expansion Tank Parts

Showing 6 out of 6 part(s) found in our catalog.

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BMW 850CSI
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Belts and Cooling
Subcategory
Expansion Tank/Coolant Reservoir
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OEM
Units do not include bleeder screw or pressure cap, please order separately. 1 per car.
BMW 540i, 740iL, 740i, 750iL, 850i, 840Ci, 850Ci, 540iT, 540i Sport, 540i Sport Wagon & more
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.
$46.99
Reg
$48.95
List
$163.70
Over bleeder screw. 1 per car.
BMW 540i, 740iL, 740i, 750iL, 850i, 840Ci, 850Ci, 540iT, 540i Sport, 540i Sport Wagon & more
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.
$5.39
Reg
$5.61
List
$8.20
FREE SHIPPING
This brand does not include the level sensor.
BMW 540i, 740iL, 740i, 750iL, 850i, 840Ci, 850Ci, 540iT, 540i Sport Wagon, 850CSi
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.
$126.99
Reg
$132.28
List
$140.00
FREE SHIPPING
This brand does not include the level sensor.
BMW 540i, 740iL, 740i, 750iL, 850i, 840Ci, 850Ci, 540iT, 540i Sport Wagon, 850CSi
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.
$56.99
Reg
$59.36
List
$133.95
KIT
This kit contains the OEM expansion tank and cap along with the updated bleeder screw and one gallon of coolant.
BMW 540i, 740iL, 740i, 750iL, 850i, 840Ci, 850Ci, 540iT, 540i Sport, 540i Sport Wagon & more
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.
$106.36
Reg
$110.79
List
$216.46
OE Solutions
BMW 540i, 740iL, 740i, 750iL, 850i, 840Ci, 850Ci, 540iT, 540i Sport Wagon, Z8 & more
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.
$50.86
Reg
$52.98
List
$80.52

Based on industry averages you can expect to pay between $5.39 and $126.99 for a BMW 850CSI expansion tank.

The BMW 850CSI expansion tank is a part of the cooling system in the vehicle. It is responsible for collecting and storing excess coolant as it expands due to high engine temperatures. The expansion tank is typically located near the radiator and connected to it through hoses. Its purpose is to maintain the proper level of coolant in the cooling system, allowing for efficient operation and preventing overheating of the engine.

The typical lifespan of a BMW 850CSI expansion tank can vary depending on various factors such as maintenance, driving conditions, and usage. However, on average, these expansion tanks can last anywhere from 80,000 to 120,000 miles before they may require replacement. It is essential to regularly inspect and maintain the cooling system of your vehicle to ensure optimal performance and longevity.

Signs of a Faulty BMW 850CSI Expansion Tank

When dealing with a faulty BMW 850CSI expansion tank, some common signs to look out for include:

  1. Coolant Leaks: If you notice coolant pooling around the expansion tank or dripping from underneath the vehicle, it indicates a potential issue with the tank.
  2. Overheating Engine: A faulty expansion tank can fail to properly regulate coolant levels, causing the engine to overheat. Keep an eye on the temperature gauge and watch for any warning lights.
  3. Low Coolant Level: If you frequently find yourself needing to top up the coolant level, it may indicate a leak in the expansion tank.
  4. Discolored Coolant: Examine the coolant for any signs of discoloration or contamination. The presence of oil or a milky consistency could suggest a problem with the expansion tank.
  5. Swollen or Cracked Tank: Inspect the expansion tank visually for any visible signs of damage such as swelling, cracks, or bulging. These physical deformities can compromise its functionality.
  6. Strong Smell of Coolant: A faulty expansion tank may emit a noticeable odor of coolant, especially if there is a leak.
  7. Pressure Build-Up: Excessive pressure in the system can cause the expansion tank to bulge or even rupture. Pay attention to any abnormal sounds, like hissing or popping, coming from the engine bay.
  8. Dashboard Warning Lights: Modern BMW models often have sensors that can detect cooling system faults. If a warning light, such as the coolant temperature warning or check engine light, illuminates on the dashboard, it may indicate an issue with the expansion tank.

If you suspect a faulty expansion tank, it's important to have it inspected and replaced if necessary, as a malfunctioning tank can lead to engine damage or overheating.

Top BMW 850CSI Expansion Tank Manufacturers

Mahle Behr:
Mahle Behr is a renowned manufacturer of expansion tanks for BMW 850CSI. With a strong reputation in the automotive industry, Mahle Behr consistently delivers high-quality products. Their expansion tanks are manufactured to meet or exceed original equipment specifications, ensuring a perfect fit and optimum performance. Mahle Behr's commitment to quality is evident through their rigorous testing and adherence to strict manufacturing standards. Customers can rely on their expansion tanks for durability and reliability, making them an excellent choice for BMW enthusiasts.

Genuine:
Genuine branded parts are manufactured exclusively by the chosen auto parts manufacturers approved by the vehicle manufacturer, in this case, BMW. Genuine parts carry the vehicle manufacturer's name and are held to the highest quality standards. These parts are known for their outstanding quality and compatibility with the specific vehicle model. Genuine expansion tanks for the BMW 850CSI offer the assurance of being original equipment quality, designed to provide optimal performance and fitment. However, due to their association with the vehicle manufacturer, these parts tend to be more expensive than their counterparts.

Rein Automotive:
Rein Automotive is another reputable manufacturer of expansion tanks for the BMW 850CSI. They specialize in producing high-quality replacement parts that meet or exceed original equipment specifications. Rein Automotive expansion tanks are manufactured with precision and undergo rigorous testing to ensure durability and performance. These tanks offer a cost-effective alternative to Genuine parts while maintaining a level of quality that meets the expectations of BMW owners. Rein Automotive has established itself as a trusted brand in the aftermarket, making their expansion tanks a reliable and affordable option for BMW 850CSI owners.

Shop Deals On BMW 850CSI Expansion Tanks

Shopping at AutohausAZ for a BMW 850CSI expansion tank offers numerous advantages. Firstly, customers can benefit from our extensive selection of high-quality expansion tanks specifically designed for the BMW 850CSI model. Our wide range ensures that you will find the perfect replacement part to fit your vehicle's needs.

Additionally, shopping with us guarantees access to genuine and authentic BMW expansion tanks. We pride ourselves on providing products sourced directly from reputable manufacturers, ensuring that you receive reliable and durable components for your car. This authenticity not only guarantees the compatibility of the part but also contributes to the overall performance and longevity of your BMW 850CSI.

Another advantage of choosing AutohausAZ is the convenience it offers. Our user-friendly website allows customers to easily browse through various expansion tanks, compare prices, and select the most suitable option. With just a few clicks, you can quickly locate the exact part you need without any hassle. Furthermore, we provide detailed product descriptions and specifications, allowing you to make an informed decision before making a purchase.

Moreover, AutohausAZ ensures a seamless shopping experience by offering secure payment options. We prioritize the safety and privacy of our customers' information, providing peace of mind throughout the transaction process. Our commitment to exceptional customer service extends beyond the purchase, as we offer reliable support and assistance for any inquiries or concerns you may have.

Lastly, by choosing AutohausAZ, you can trust in our reputation for prompt and efficient shipping. We understand the urgency of receiving your BMW 850CSI expansion tank as soon as possible. Therefore, our dedicated team works diligently to process and dispatch orders promptly, ensuring that you experience minimal downtime.

In conclusion, shopping at AutohausAZ for a BMW 850CSI expansion tank comes with a multitude of advantages. From our extensive selection and genuine products to the convenience of our website and secure payment options, we strive to provide a seamless shopping experience. Trust in our commitment to quality and efficiency, and let us assist you in acquiring the perfect expansion tank for your BMW 850CSI.

Auto Parts We Offer for BMW 850CSI