BMW Cooling System Parts & Accessories for BMW 3 Series E93 (2007-2013)

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The cooling system is arguably the weakest point in numerous BMWs. If you drive an aging BMW or plan on taking your car to the track like we do, we recommend beefing up your cooling system before going to the track. Generally, the main components in your cooling system that are prone to failure include the following: expansion tank, factory hoses, water pump, thermostat, fan (especially if your vehicle comes factory with a clutch fan), and radiator. Factory BMW expansion tanks are plastic and prone to either breaking off at connection points or combusting. As factory rubber hoses age they either crack or break over time - we offer silicone cooling hose upgrades for most applications to avoid future failures. If you have an older vehicle, your water pump likely comes from the factory with a plastic impeller - we offer upgraded water pumps with metal impellers that are far more reliable. Newer model BMWs utilize electric water pumps - BMW spent millions of dollars engineering these water pumps, but they fail so often that we recommend replacing at 60,000 mile service intervals to avoid being stranded on the side of the road. In terms of thermostats, we offer various upgraded thermostats for racing applications. If your BMW utilizes a clutch fan from the factory, we have several options available in terms of universal electric fans - we recommend replacing these to avoid sending brittle plastic fan blades through your hood. For radiators, we recommend swapping out your radiator for one that does not use plastic connection points like your factory radiator.

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Meyle - Coolant Inlet Hose Section for various BMW models
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Meyle - Corporate Logo
T#:40478168
Part#: 11537516414
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$ 7.99 USD
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This Meyle component offers OEM-level fit and function for hassle-free installation and dependable cooling system performance.
Fluid Level Sensor
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Meyle - Corporate Logo
T#:5973204
Part#: 17117546548
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$ 13.99 USD
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MEYLE-ORIGINAL: True to OE fluid level sensor. Used in multiple locations. Wulf Gaertner Autoparts AG manufactures and markets automotive spare parts under its MEYLE brand. Since its foundation in 1958, Wulf Gaertner Autoparts has been an owner-operated, unlisted family business on the aftermarket scene. Since 1995, Wulf Gaertner Autoparts AG has been manufacturing and trading under its MEYLE brand. They pride themselves on top-grade quality-tested spare parts for passenger cars, vans and commercial vehicles. Comparable OE Cross Reference - 17117546548
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Meyle Coolant Hose - BMW N52 3.0L
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Meyle - Corporate Logo
T#:35829327
Part#: 11537521049
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$ 19.99 USD
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Over time, coolant hoses in your vehicle can deteriorate due to prolonged exposure to high temperatures from the coolant. Made of reinforced rubber, these hoses are prone to issues such as splitting at hose clamps, swelling, cracking, or even breaking, which can leave you stranded. It's important to replace them at the first sign of wear to prevent coolant loss and ensure your engine stays properly cooled.
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Auxillary Fan Switch
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Meyle - Corporate Logo
T#:4934936
Part#: 3148210000
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$ 18.99 USD
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$ 18.99 USD
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The auxiliary fan switch activates the auxiliary cooling fan to provide additional cooling under high heat loads, and when the car is stationary. Also known as the coolant temperature sending unit, comes with related o-ring
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Coolant Thermostat
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Meyle - Corporate Logo
T#:55461389
Part#: 11537549476
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$ 81.99 USD
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This Meyle coolant thermostat provides a refresh for your thermal management system, keeping your engine operating exactly where the engineers intended.
Coolant Expansion Tank Cap
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Meistersatz - Corporate Logo
T#:379621
Part#: 17117639020
Ships in 4 Business Days
$ 17.99 USD
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Quality aftermarket coolant expansion tank cap.

Radiator Support Bracket
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Rein - Corporate Logo
T#:14122755
Part#: 17117514402
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$ 8.99 USD
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Mounts to top of radiator bracket, 2 per vehicle.
Meistersatz Temperature Sensor
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Meistersatz - Corporate Logo
T#:379740
Part#: 13621433076
Ships in 4 Business Days
$ 15.99 USD
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Monitors coolant / oil temperature

INA Water Pump for E60 , E71 and F10
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Ina - Corporate Logo
T#:36574507
Part#: 11517632426
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$ 691.99 USD
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This premium replacement water pump is engineered to OE specifications for performance, reliability, and longevity, making it an essential component for maintaining optimal engine temperatures

URO Coolant Pipe O-Ring - BMW N52 3.0L
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URO - Corporate Logo
T#:37892133
Part#: 11517514942
In Stock
$ 2.09 USD
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URO Coolant Pipe O-Ring - BMW N52 3.0L

Engineered to meet OE coolant pipe o-ring dimensions, the URO Coolant Pipe O-Ring ensures easy installation and a perfect fit for BMW N52 3.0L engines. It is designed to resist cooling system heat and antifreeze, providing reliable performance under demanding conditions. Constructed from durable ECD (Electro Chemical Degradation)-resistant EPDM material, it helps prevent electrolysis, extending the lifespan of your cooling system. With a temperature rating of -40º F to 275º F (-40º C to 135º C), this o-ring is built to withstand extreme temperatures. Supported by a 24-month unlimited mileage warranty, it is a dependable solution for maintaining your BMW’s cooling system efficiency.

Key Benefits:

  • Precision-molded to OE dimensions for easy installation and perfect fit.
  • Resists cooling system heat and antifreeze for reliable performance.
  • Durable ECD-resistant EPDM material prevents electrolysis.
  • Temperature rating of -40º F to 275º F for extreme condition durability.
  • Includes a 24-month unlimited mileage warranty for peace of mind.
  • Specifically designed for BMW N52 3.0L engines.
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BMW Coolant Expansion Tank With Cap
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Rein - Corporate Logo
T#:46616007
Part#: EPK0131
Ships in 4 Business Days
$ 104.99 USD
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The coolant expansion tank provides a place for excess coolant to flow as temperatures rise and fall. Because it constantly endures extreme temperature changes, it’s prone to cracking or breaking over time. Keeping coolant contained within the system is essential, so if your tank shows signs of damage—such as cracks, broken nipples, or compromised mounting points—it’s time for a replacement.
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Moroso Aluminum Coolant Expansion Tank
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Moroso - Corporate Logo
T#:29666104
Part#: 63850
In Stock at Vendor
$ 586.00 USD
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The coolant expansion tank provides hot coolant with a place to travel, preventing pressure buildup within your cooling system. On many BMWs, this component is constructed from plastic. While cheap to replace and manufacture, a failed cooling tank can cause costly engine damage.

With this issue in mind, Moroso designed a high-quality replacement. Featuring TIG welded, 100% aluminum construction, this tank is sure to outperform it's factory counterpart.

Features:

Key Benefits:

Direct bolt-in replacement for stock, 2 piece plastic tank Fabricated Aluminum for strength, factory tanks fail after repeated high heat situations & age Features billet aluminum mounting tab/bleeder assembly for strength and precision No cutting of factory hoses is required and accepts the factory clip-on hose Included is a Moroso (63324) racing radiator cap that operates in the same pressure range as the factory cap Moroso radiator cap mounts to a billet aluminum neck that will not strip out like plastic threaded necks Can be polished, chromed, or powder coated or left as-is

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Auxiliary Fan Switch
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URO - Corporate Logo
T#:376847
Part#: 13621433077
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$ 10.99 USD
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$ 10.99 USD
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Comes with related o-ring
Electric Water Pump
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Meyle - Corporate Logo
T#:54959290
Part#: 313 220 0017
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New Item
$ 326.99 USD
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Whether you are daily driving or doing a preventative cooling overhaul, this high-quality replacement pump includes fresh mounting hardware to ensure your BMW's cooling system remains reliable.
Vargas Rear Drain Block Off - BMW N54
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Vargas Turbo Technologies - Corporate Logo
T#:51778139
Part#: VTT-N54-RDBO
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$ 27.99 USD
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$ 27.99 USD
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Simplify your N54 engine build with the VTT Rear Drain Block Off.