BMW Cooling System Parts & Accessories for BMW X Series E83 (2004-2010)

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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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Packaged by Turner - Corporate Logo
T#:17073598
Part#: 11537549476KT
In Stock
Sale - Save 25% $ 424.99

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05-03-2026

$ 318.83 USD
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$ 424.99

This product was last offered at the strikethrough price on
05-03-2026

$ 318.83 USD
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Includes everything you may need to replace your water pump and thermostat.
Packaged by Turner - Corporate Logo
T#:5376274
Part#: 11517586925TKT
In Stock
Sale - Save 25% $ 448.99

This product was last offered at the strikethrough price on
05-03-2026

$ 337.56 USD
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Sale - Save 25%
$ 448.99

This product was last offered at the strikethrough price on
05-03-2026

$ 337.56 USD
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Everything you need to replace your water pump and thermostat. The water pumps in these BMW models are known for failure near 80,000 miles is a very common issue often times leaving the owner stranded. The aftermarket kit offered provides a single stop for water pump and thermostat replacement needs to save the search and get you back on the road. Kit includes: Mahle-Behr thermostat Water pump Genuine BMW coolant thermostat to water pump hose Mounting hardware required for both the thermostat and water pump
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Packaged by Turner - Corporate Logo
T#:557216
Part#: E83M54BCKT
In Stock
Sale - Save 1% $ 311.99

This product was last offered at the strikethrough price on
05-03-2026

$ 308.45 USD
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Sale - Save 1%
$ 311.99

This product was last offered at the strikethrough price on
05-03-2026

$ 308.45 USD
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Just like the rest of your vehicle's major systems, the cooling system must also be addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself can degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

See kit contents below for all included components.

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Packaged by Turner - Corporate Logo
T#:338020
Part#: 17117573781
In Stock at Vendor
Sale - Save 2% $ 140.99

This product was last offered at the strikethrough price on
04-01-2026

Starting at $ 137.98 USD
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$ 140.99

This product was last offered at the strikethrough price on
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Starting at $ 137.98 USD
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This coolant reservoir is for the non-M E46 3-series models from 1999-2006 (M3 takes a different expansion tank). We have found that the expansion tanks should be replaced based on age as well as condition. Expansion tanks seem to have a lifespan of less than six years before they show signs of fatigue and wear. Pre-emptively replacing the expansion tank as part of an overall maintenance plan can prevent you from getting stranded from a sudden failure later on. This is the most recent expansion tank design from Hella-Behr, the OEM supplier to BMW. It replaces the original BMW part number 17137787039.

Other items to consider replacing at the same time are the radiator cap, coolant level sensor, lower radiator hose, coolant temp sensor in the lower hose, and the hose clamps. If your car has an automatic transmission you should also replace the oil cooler thermostat in the radiator frame, which is a common source for leaks.

This coolant expansion tank fits:

1999-2006 E46 3 series - 323i, 323Ci, 325i, 325Ci, 325xi, 328i, 328Ci, 330i, 330Ci & 330xi (**no M)
2004-2008 X3 SAV - X3 2.5, X3 3.0, X3 3.0si
2000-2005 X5 SAV - X5 3.0
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Packaged by Turner - Corporate Logo
T#:554544
Part#: 17113400013KT3
Ships in 1-2 days
Sale - Save 2% $ 873.99

This product was last offered at the strikethrough price on
05-03-2026

$ 856.83 USD
Sale - Save 2%
$ 873.99

This product was last offered at the strikethrough price on
05-03-2026

$ 856.83 USD

This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the E83 with the M54 engine. 

A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system. Keep on top of the cooling needs of your engine for your own piece of mind. Potential buyers also see the upside of a properly maintained car with receipts. 

 

 

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Packaged by Turner - Corporate Logo
T#:554073
Part#: 11537509227KT3
Ships on Jan 12, 2027
$ 101.99 USD
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$ 101.99 USD
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When it comes time to replace your thermostat, be sure you have everything you need. This kit includes everything you need to replace your thermostat, including the thermostat.

Kit includes:

  • Mahle-Behr thermostat with gasket
  • Thermostat mounting hardware
  • 1 liter of coolant

Applications:
1999-2003 E39 528i, 525i, 530i sedan, touring wagon (M52TU engine, M54 engine)
1999-2005 E46 323, 328, 325, 330 sedan, coupe, cabrio, touring wagon (M52TU engine, M54 engine)
2004-2005 E60 525i, 530i sedan, touring wagon (M54 engine)
2001-2006 E53 X5 3.0 (M54 engine)
2004-2006 E83 X3 2.5i X3 3.0i (M54 engine)
1999-2002 Z3 2.3. Z3 2.5i, 2.8 Z3 3.0i (M54 engine)
2003-2005 Z4 2.5i, Z4 3.0 (M54 engine)

 

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Packaged by Turner - Corporate Logo
T#:42873693
Part#: TMS206099GKT
In Stock
$ 729.35 USD
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Our water pump/thermostat overhaul includes:

  • Electric Water Pump
  • Aluminum mounting screws for water pump
  • Thermostat
  • Connecting hose from thermostat to water pump 
  • Hose clamps

 

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URO Thermostat - E60, E61, E82, E83, E88, E90, E91, E92, E93, Z4 ...
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URO - Corporate Logo
T#:591812
Part#: 11537549476
In Stock
$ 74.99 USD
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Restore proper function to your cooling system

BMW Water Pump - Remanufactured - 11517527799
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URO - Corporate Logo
T#:372932
Part#: 11517527799
In Stock
$ 42.99 USD
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Features a metal impeller for reliability
URO - Heater Inlet Pipe - E46, Z3, E39
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URO - Corporate Logo
T#:34080697
Part#: 11531705210
Ships in 2 Business Days
$ 34.49 USD
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This runs from the front left side of the cylinder head under the intake manifold toward the firewall.
URO Expansion Tank Mounting Plate - E83
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URO - Corporate Logo
T#:593040
Part#: 17113400017
Ships in 2 Business Days
$ 68.99 USD
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Secures the expansion tank to the radiator


Coolant Expansion Tank - E53 E46 E83 M52 M54
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URO - Corporate Logo
T#:373103
Part#: 17137787039
Ships in 2 Business Days
$ 45.99 USD
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We have found that the expansion tanks should be replaced based on age as well as condition. Expansion tanks seem to have a lifespan of less than six years before they show signs of fatigue and wear. Pre-emptively replacing the expansion tank as part of an overall maintenance plan can prevent you from getting stranded from a sudden failure later on.
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URO Water Pump - BMW N52 3.0L
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URO - Corporate Logo
T#:39768338
Part#: 11517586925
In Stock
Sale - Save 10% $ 296.99

This product was last offered at the strikethrough price on
07-13-2026

$ 267.29 USD
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Sale - Save 10%
$ 296.99

This product was last offered at the strikethrough price on
07-13-2026

$ 267.29 USD
Free Shipping on orders $49 and up
If your engine is over heating or you have noticed coolant loss, there is a chance your water pump has failed. This URO replacement is a great option to get your BMW back on the road without breaking the bank.
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URO - Corporate Logo
T#:50031879
Part#: 17112248409
Ships in 2 Business Days
New Item
$ 40.99 USD
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Plastic cooling system components degrade and become brittle with age and heat exposure. This particular part is especially prone to damage during expansion tank removal. Always inspect it whenever the expansion tank is removed and replace it if any cracking or wear is found.
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URO - Corporate Logo
T#:55821698
Part#: 17123424499
Ships in 2 Business Days
New Item
$ 33.99 USD
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This URO molded lower hose is engineered from advanced Electro-Chemical Degradation (ECD) resistant material, preventing interior breakdown and future leaks

Radiator Drain Plug
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URO - Corporate Logo
T#:380524
Part#: 17111437361
In Stock
$ 3.99 USD
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Usually stripped out after being removed
URO Silicone Coolant Pipe Repair Kit - BMW N52 3.0L
For vehicles with manual transmission
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URO - Corporate Logo
T#:37757233
Part#: 11537535829RPR
Ships in 2 Business Days
$ 16.99 USD
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$ 16.99 USD
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This silicone coolant pipe repair kit replaces the factory rubber hose section found on the coolant pipe that runs from the engine block to the water pump, BMW p/n 11537535829. The factory rubber hose tends to split over time, leading to coolant loss. Silicone hose lasts significantly longer than rubber hose, ensuring leak-free engine operation for many years.
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Auxiliary Fan Switch O-Ring
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URO - Corporate Logo
T#:377077
Part#: 13621433077S
In Stock
$ 0.88 USD
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Now you can just replace the o-ring instead of the whole switch
URO Parts Thermostat Assembly - 11537509227
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URO - Corporate Logo
T#:29466801
Part#: 11537509227
Back Ordered
$ 41.99 USD
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$ 41.99 USD
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The thermostat cover in your BMW, made from plastic, is notorious for failing. After years of exposure to hot coolant, the plastic can crack, leading to significant coolant leaks and potential engine overheating.

URO Parts offers a superior solution with their high-quality thermostat cover, designed to surpass the durability of the original factory part. This replacement thermostat comes complete with a gasket for an effortless service.

Features:

Perfect Fit: Guaranteed fitment ensures a seamless replacement process. Optimal Cooling: High-flow OE-style design ensures efficient engine cooling performance. Easy Installation: Manufactured to factory housing dimensions for straightforward bolt-on installation and secure hose connections. Comprehensive Design: Includes ports for temperature sensors where applicable. Superior Materials: Constructed from high-quality alloy or composite materials that resist temperature-induced warping or cracking, preventing coolant leaks. URO Parts, with over 8,000 premium spare parts, specializes in manufacturing precise, durable replacements for factory BMW components. Committed to the highest standards of precision, materials, and workmanship, each part is rigorously tested to deliver the best combination of durability, functionality, and affordability. For reliable replacement parts that offer great value, choose URO Parts.

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URO Thermostat Housing Gasket - BMW M52TU M54
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URO - Corporate Logo
T#:639269
Part#: 11537509357
Ships in 2 Business Days
$ 2.99 USD
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Prevent leaks with a brand new thermostat housing gasket from URO

Radiator Drain Plug (Adjustment Screw) - Priced Each
For vehicles with manual transmission only
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URO - Corporate Logo
T#:593031
Part#: 17111437359
Ships in 2 Business Days
$ 8.99 USD
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$ 8.99 USD
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This is the drain plug (adjustment screw) for manual transmission equipped cars.
URO Coolant Hose - BMW E60 E61 E83 N52
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URO - Corporate Logo
T#:639219
Part#: 11537519494
Ships in 2 Business Days
$ 20.99 USD
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Over the years and with exposure to extremely hot coolant, the coolant hoses in your vehicle can take a beating. Being made of reinforced rubber, these hoses can fail in a number of ways. Splitting at a hose clamp, swelling, cracking, and breaking are just a few of the ways this hose can leave you stranded.
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URO Expansion Tank Mounting Plate - BMW E83 X3
For vehicles with a manual transmission
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URO - Corporate Logo
T#:639534
Part#: 17113400018
Ships in 2 Business Days
$ 90.99 USD
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$ 90.99 USD
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Secures the expansion tank to the radiator


Radiator Drain Plug With Housing
For vehicles with automatic transmission only
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URO - Corporate Logo
T#:593032
Part#: 17111437360
In Stock
$ 10.99 USD
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$ 10.99 USD
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This is the drain plug (adjustment screw) for automatic transmission equipped cars.
Auxiliary Fan Switch
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URO - Corporate Logo
T#:376847
Part#: 13621433077
Back Ordered
$ 10.99 USD
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$ 10.99 USD
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Comes with related o-ring
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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