OEM BMW Cooling Systems Online

7119904529 - : Tensioner Bolt for BMW Image

Tensioner Bolt

With M6. 2.5, 3.0L, 2003-05. Without m model. 4.8L, alt, water pump.
$7.75
MSRP $9.69
Save $1.94
20% Off
11287565225 - : Serpentine Tensioner for BMW Image

Serpentine Tensioner

3.0L gas non turbo, mechanical tensioner, alt, water pump. X5. 3.0l. Without diesel. With 4-zone.
$143.41
MSRP $179.26
Save $35.85
20% Off
11287835996 - : Cap for BMW Image

Cap

5.0L. 4.0L, ac belt. 3.0L gas non turbo, mechanical tensioner, belt tensioner, alt, water pump. With M3.
$7.13
MSRP $8.91
Save $1.78
20% Off
11287835130 - : Belt Tensioner Washer for BMW Image

Belt Tensioner Washer

3.2L, water pump & alternator. 3.2L, drive belt. 2.8 & 3.0L, 2.8L 1999-00. 2.5L, 1996-00. 1.8L, lower.
$2.08
MSRP $2.60
Save $0.52
20% Off
11281745904 - : Adjust Lever for BMW Image

Adjust Lever

4.0 & 4.4L, alternator belt. 4.4, 4.6 & 4.8L, 2000-03, alt, water pump. 540i 1998-03, alternator & p/s bel.
$45.21
MSRP $56.51
Save $11.30
20% Off
11287549588 - : Tensioner for BMW Image

Tensioner

760i, 760Li. 745i, 745Li. 4.4, 4.6 & 4.8L, 2004-06, alt, water pump. 750i, 750Li. 650i. X5. 4.4l. 645Ci. 550i. Without gt. X5. 4.8l.
$132.30
MSRP $165.38
Save $33.08
20% Off
11281709613 - : Belt Tensioner for BMW Image

Belt Tensioner

740i, 740iL. 4.0 & 4.4L, alternator belt. 4.4, 4.6 & 4.8L, 2000-03, alt, water pump. 540i. M5. X5. 4.4l. X5. 4.6l. For Serpentine Belt....
$100.50
MSRP $125.62
Save $25.12
20% Off
12311713153 - : Bearing for BMW Image

Bearing

3.2L, water pump & alternator. 2004-06. 525i,528i & 530i 1999-03, hydraulic tensioner. 2.5 & 3.0L without turbo, 2004-05, hydraulic...
Backordered
17115A1E2B0 - : Stone Guard for BMW Image

Stone Guard

Xdrive 28i, auxiliary radiator. 2024-26, auxiliary radiator. M35i xdrive, auxiliary radiator. Without m model, auxiliary radiator....
$80.16
MSRP $100.20
Save $20.04
20% Off
17119894814 - : Stone Guard for BMW Image

Stone Guard

Auxiliary radiator, 228i. 2020-22, auxiliary radiator. Auxiliary radiator, M235i.
$68.89
MSRP $86.11
Save $17.22
20% Off
11287515865 - : Tensioner Pulley for BMW Image

Tensioner Pulley

4.0 & 4.4L, alternator belt, adjust. 4.4, 4.6 & 4.8L, 2000-03, adjuster, alt, water pump. 540i 1998-03, adjuster, alt & p/s belt. X5....
$183.33
MSRP $229.16
Save $45.83
20% Off
11281726773 - : Mount Plate for BMW Image

Mount Plate

3.2L, water pump & alternator. 2004-06, front. 525i,528i & 530i 1999-03, hydraulic tensioner, front. 2.5 & 3.0L without turbo, 2004-05,...
$48.52
MSRP $60.65
Save $12.13
20% Off

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Keeping your BMW Cooling System in top condition

Engines generate a lot of heat while running, and a properly functioning cooling system keeps everything at safe temperatures. Drivers rely on these systems to prevent overheating that can cause serious damage. Regular inspection and maintenance are essential to catch issues early. At BMW Auto Parts Online, we provide genuine BMW replacements that maintain your car’s performance and reliability.

How cooling systems work

The cooling system circulates coolant through the engine and radiator to absorb and release heat. Components like the water pump, thermostat, and radiator work together to maintain consistent engine temperatures. A well-maintained cooling system ensures the engine runs efficiently, avoids overheating, and supports long-term reliability. Related parts, such as the radiator hose, also play a role in keeping coolant moving smoothly.

Why cooling systems fail

Over time, components can wear out or become clogged. Leaks in hoses, a failing water pump, or a stuck thermostat can lead to overheating. Contaminated or old coolant can corrode metal surfaces and damage seals. Recognizing signs like temperature spikes, coolant leaks, or unusual noises can help prevent costly repairs.

When to replace parts

Replacement intervals depend on vehicle age, mileage, and driving conditions. Genuine BMW parts provide precision fit and durability that aftermarket options often cannot match. Popular models such as the BMW 5 Series and BMW X5 benefit from OEM cooling system replacements, ensuring consistent performance and longer lifespan. Regular maintenance and timely replacement keep the engine safe and reliable.

Maintaining a BMW’s cooling system protects the engine and supports smooth performance on every drive. Choosing genuine BMW parts from BMW Auto Parts Online guarantees quality and compatibility. Staying on top of maintenance prevents unexpected failures and keeps the vehicle running as intended. Investing in authentic components ensures peace of mind for years of dependable driving.