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

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$ 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

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05-03-2026

$ 337.56 USD
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Sale - Save 25%
$ 448.99

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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
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$ 308.45 USD
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Sale - Save 1%
$ 311.99

This product was last offered at the strikethrough price on
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$ 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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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 day
Sale - Save 2% $ 873.99

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

$ 856.83 USD
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$ 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 14, 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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Heater Inlet Pipe
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Rein - Corporate Logo
T#:594330
Part#: 11531705210
In Stock
$ 41.99 USD
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This is the plastic heater inlet pipe that connects the cylinder head to the heater inlet on cars with the M52 or M54 engine.The plastic on this hose becomes brittle over time and eventually leads to failure.
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Rein Coolant Expansion Tank - E46, E53, E83
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Rein - Corporate Logo
T#:402141
Part#: 17117573781
In Stock
$ 76.39 USD
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$ 76.39 USD
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Includes cap and level sensor
Water Pipe
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Rein - Corporate Logo
T#:594365
Part#: 11537502000
In Stock
$ 39.99 USD
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Water pipes are essential for proper cooling. If they are cracked, they are going to need to be replaced as soon as possible to avoid overheating your engine. This water pipe runs from the back of the water pump housing to the expansion tank hose. Includes all required seals, needed for the install.
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Rein Radiator Hose - Automatic Transmission - E83
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Rein - Corporate Logo
T#:19573
Part#: 17123417607
Ships in 3 Business Days
$ 36.99 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. Replace it at the first sign of wear to keep your coolant in your engine.
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Rein Coolant Inlet Hose Section - E82, E83, E88, E90, E91, E92, E93 ...
For vehicles with manual transmission
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Rein - Corporate Logo
T#:388668
Part#: 11537535829
In Stock at Vendor
$ 30.99

This product was last offered at the strikethrough price on
01-27-2026

$ 20.99 USD
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$ 20.99 USD
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Replaces the rubber section of the water pump inlet pipe - includes two clamps
Thermostat With Housing
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Rein - Corporate Logo
T#:582356
Part#: 11537509227
Ships in 3 Business Days
$ 89.99 USD
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$ 89.99 USD
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Stop leaks before they start with this new Thermostat With Housing from Rein.
OEM Rein Lower Expansion Tank Coolant Hose - E83 X3
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Rein - Corporate Logo
T#:363441
Part#: 11533400205
Ships in 1 Business Day
$ 27.99 USD
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Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.

Coolant Hose
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Rein - Corporate Logo
T#:592656
Part#: 64213400417
Ships in 1 Business Day
$ 20.99 USD
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Connects the expansion tank to the heater core

Nissens - Corporate Logo
T#:361274
Part#: 17113400013
In Stock at Vendor
$ 179.29

This product was last offered at the strikethrough price on
07-15-2026

$ 176.42 USD
$ 176.42 USD
More than likely, you are going to replace the radiator in your vehicle at least once. The joints where the cores meet the end tanks tend to get weak and are the first place to spring a leak. Impacts to the fins themselves can cause holes to form. Corrosion and clogging from the inside can make cooling less than effective and compromise coolant flow. Replace your leaking unit with a factory replacement and get that jug of coolant out of your back seat.
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Nissens - Corporate Logo
T#:373949
Part#: 17113415693
Ships in 2 Business Days
$ 191.46

This product was last offered at the strikethrough price on
05-11-2026

$ 176.10 USD
$ 176.10 USD

Rein Cylinder Head To Thermostat Hose - E83
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Rein - Corporate Logo
T#:591814
Part#: 11537552339
Ships in 1 Business Day
$ 37.06 USD
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Replace your leaking coolant hose
Rein Expansion Tank Mounting Plate - E83
For vehicles with an automatic transmission
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Rein - Corporate Logo
T#:402421
Part#: 17113400017
Ships in 3 Business Days
$ 166.99 USD
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$ 166.99 USD
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Secures the expansion tank to the radiator

Rein Radiator Hose - Lower - E83
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Rein - Corporate Logo
T#:362528
Part#: 17123413819
Ships in 1 Business Day
$ 45.99 USD
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Includes port for coolant temperature sensor

OEM Rein Lower Radiator Hose - E83 N52 3.0L
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Rein - Corporate Logo
T#:379822
Part#: 17123422785
In Stock at Vendor
$ 37.99 USD
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Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.
OEM Rein Lower Radiator Hose - E83 X3
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Rein - Corporate Logo
T#:379773
Part#: 17123424499
Back Ordered
$ 36.99 USD
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Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.
Rein Coolant Bleeder Screw CHW1575 - Priced Each
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Rein - Corporate Logo
T#:591955
Part#: 17111712788
In Stock
$ 4.99 USD
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Coolant Bleeder Screw is a critical component for maintaining your BMW’s cooling system. Designed to release trapped air from the coolant lines, this screw ensures efficient coolant flow and prevents overheating. Specifically engineered for BMW models, it enhances the overall performance and longevity of your engine by maintaining proper temperature regulation. Comes with O-Ring.
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OEM Rein Coolant Pipe Inlet Hose Section - N52
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Rein - Corporate Logo
T#:388662
Part#: 11537516414
In Stock
$ 19.99 USD
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Cooling hoses tend to crack over time after going through countless heating and cooling cycles. This can lead to leaks or air bubbles in the cooling system that lead too coolant loos, hurts cooling potential, or could possibly cause damage from excess heat.

Fits the following BMWs:
Submodels with N52 3.0L engine.

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Aluminum Screws for N52 N54 Water Pump
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Rein - Corporate Logo
T#:2253
Part#: 11510392553
In Stock
$ 7.13 USD
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These aluminum water pump screws are single use and must be replaced each time they are removed. These are used on all 325i, 328i, and 330i with the BMW N51 N52 and N53 engines. They were also used on some early N54 engines that have rubber mounts on the water pump housing. Do not use these bolts if your N54 water pump has been replaced with a housing that does not have the rubber mounts.

In German, Rein means Pure. In the automotive industry the Rein name has quickly come to represent quality. With fitments for some of the world’s finest automobiles including BMW and Mini and guaranteed OE quality, Rein is a name you can trust.

This item fits the following BMWs:
2008+ E82 BMW 128i 135i
2007+ E9X BMW 325i 325xi 328i 328xi 330i 335i 335xi
2006+ E60 BMW 525i 525xi 528i 528xi 530i 530xi 535i 535xi
2006+ X3 BMW X3 3.0i X3 3.0si
2006+ Z4 BMW Z4 3.0i Z4 3.0si
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OEM Rein Expansion Tank Cap - BMW E32 E34 E36 E38 E39 E46 & More ...
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Rein - Corporate Logo
T#:340541
Part#: 17111742231
In Stock
$ 17.99 USD
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This radiator expansion tank cap is used most BMW's from 1991-2006. It is a common failure item. When this item fails, it cannot hold pressure which results in your BMW overheating. If you are overhauling your coolant system, now is the time to consider preventative replacing this cap. It is also referred to as the coolant reservoir cap.
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Rein Coolant Hose - E60, E61, E70, E82, E83, E88, E90, E91, E92, E93,...
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Rein - Corporate Logo
T#:348982
Part#: 11537521049
In Stock
$ 17.99 USD
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Connects from the water pump to the thermostat

Rein - Corporate Logo
T#:46719171
Part#: CHK0198
Ships in 3 Business Days
$ 49.99 USD
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Keep your cooling system sealed, strong, and ready for anything with this Rein radiator hose kit—your all-in-one fix for cracked, leaking, or worn factory hoses. Years of heat, pressure, and age can cause rubber to weaken, split, or swell, setting the stage for coolant leaks and potential overheating. Rein hoses are engineered to meet or exceed OEM standards, built from premium, heat-resistant materials that can take on extreme temperatures and system pressures without faltering. Each hose features factory-correct bends, fittings, and diameters for an exact, hassle-free installation—no cutting or forcing required. Whether you’re tackling a full cooling system refresh or chasing down a small coolant leak, this Rein kit provides everything needed to restore confidence and performance under the hood. Why choose this Rein radiator hose kit: Factory-level precision – Direct-fit replacements that deliver OEM-quality reliability. Built to last – Resists cracking, swelling, and chemical damage from daily heat cycling. Confidence restored – Prevents coolant loss, overheating, and on-road breakdowns. All-in-one upgrade – Includes upper and lower hoses for a complete system refresh. If keeping your BMW’s cooling system running tight and trouble-free is the goal, Rein brings the dependable quality and fitment you can count on—engineered to perform just like factory, mile after mile.
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OEM Rein Coolant Hose - E60 E61 E83 Z4
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Rein - Corporate Logo
T#:583591
Part#: 11537519494
In Stock
$ 18.99 USD
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Attaches from inlet pipe to heat exchanger. Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.
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OEM INA Water Pump - BMW N52 3.0L
We Price Match - Give Us A Call or Chat!
Ina - Corporate Logo
T#:36201646
Part#: 11517586925
Ships in 7 Business Days
$ 624.99 USD
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Choose the INA Water Pump for E90 E92 and E93 to ensure your BMW’s cooling system operates efficiently, providing peace of mind and reliable performance on every drive.
Rein - Corporate Logo
T#:46478542
Part#: WPR0046
Ships in 3 Business Days
$ 795.99 USD
Free Shipping on orders $49 and up
Don't take your car's cooling system for granted. A waterpump failure can cost you an engine, which is why preventatively replacing your BMWs waterpump and refreshing the cooling system every 60,000 miles. The water pump is a weak point is the cooling system. Replacing your waterpump will go a long way for keeping your car on the road and operating properly. This water pump fits many 2006 and newer BMW 6 cylinder engines, specifically all the BMWs with the N51, N52, N53 engines. You will also need to purchase replacement aluminum screws Part #11510392553
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Nissens - Corporate Logo
T#:384279
Part#: 17113403551
Ships in 1 day
$ 273.99

This product was last offered at the strikethrough price on
05-07-2026

$ 265.99 USD
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$ 265.99 USD
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For vehicles with manual transmission

Radiator Support Bracket
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Rein - Corporate Logo
T#:14122755
Part#: 17117514402
Special Order: No Guaranteed ETA
$ 8.99 USD
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Mounts to top of radiator bracket, 2 per vehicle.