URO BMW Cooling System Parts & Accessories for BMW Z3 (1996-2002)

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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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Engine Fan - 11 Blades, 420mm - Many 6 Cylinders
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T#:1287
Part#: 11521712058
In Stock
$ 32.19 USD
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This fan is driven by the serpentine belt, engaged by the fan clutch. If you have bad motor mounts, it's quite common for the blades of this fan to make contact with the radiator or radiator shroud, essentially self-destructing the fan into many peices. Be sure to get a new fan clutch, while you are replacing this. 
With more than 4,000 European vehicle replacement parts, URO is no stranger to the market. Superior metal stock and extremely strict quality control are at the forefront of URO’s agenda and it shows as they become the OE supplier for more and more car companies every single day.

This fan fits many 6 cylinder BMWs, including the following:

1989-1994 E32 735i/iL
1991-1995 E34 525i, 535i, M5
1992-1999 E36 3 series with 6 cylinder engine (M3, 325, 328, 323)
1997-2002 Z3 2.3, 2.5, 2.8, 3.0, and MZ3 3.2 (S52)
1997-2003 E39 5 series, 525i, 528i, 530i
1999-2000 E46 3 series 323i/Ci, 328i/Ci
2001-2005 E46 3 series WITH AUTOMATIC TRANSMISSION ONLY
2001-2006 E46 M3 (all):
2001-2006 X5 3.0i
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URO Radiator Fan Clutch
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T#:362006
Part#: 11527505302
In Stock
$ 72.99 USD
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$ 72.99 USD
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Common source of engine overheating
Radiator Fan Clutch
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T#:373088
Part#: 11527831619
In Stock
$ 71.83 USD
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Direct replacement

Radiator Fan Switch
For vehicles with production date up to 05/1997 For vehicles with production date up to 07/1996
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T#:361996
Part#: 61311378073
In Stock
$ 26.44 USD
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$ 26.44 USD
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Measures radiator air temperature enabling the fan to turn off or on

BMW Water Pump - Remanufactured - 11517527799
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T#:372932
Part#: 11517527799
In Stock
$ 42.99 USD
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Features a metal impeller for reliability
Coolant Expansion Tank
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T#:373102
Part#: 17111723520
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$ 29.99 USD
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Does not include cap or coolant level sensor

URO Radiator Hose (Lower) - Z3
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T#:38094315
Part#: 11531716642
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$ 23.99 USD
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Whether replacing a failing radiator hose or replacing for proper maintenance, the URO Lower Radiator Hose ensures exceptional cooling efficiency, reliability, and longevity, keeping your BMW’s engine running at peak performance.
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URO - Heater Inlet Pipe - E46, Z3, E39
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T#:34080697
Part#: 11531705210
In Stock
$ 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.

Coolant Expansion Tank
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T#:377303
Part#: 17107514964
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$ 52.30 USD
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The coolant expansion tank in your vehicle gives additional fluid a place to go after expansion and contraction from temperature change. Because it is subjected to such drastic changes on a regular basis, it can often crack or break.
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Fan Clutch
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T#:373086
Part#: 11521723027
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$ 74.00 USD
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Direct replacement from URO
URO Thermostat & Housing Assembly - E36/Z3 M44
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T#:5958717
Part#: 11531743017
In Stock
$ 32.99 USD
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The thermostat on your vehicle controls the flow of coolant based on temperature. When you just start your engine, the thermostat remains closed to accelerate the warm up process. After a few minutes, it opens up to allow the warm fluid to flow. If your vehicle is overheating but not blowing warm air from the heater, the problem is more than likely your thermostat. If the thermostat gets stuck closed, it allows no fluid to flow and ends up overheating the coolant already in the engine. If your vehicle is not getting up to temperature when driving, the thermostat is more than likely stuck open. Your engine does not get up to the proper operating temperature where it runs the most efficiently. To fix this problem and get your vehicle's heat restored, replace your thermostat.
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Water Pump
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T#:372930
Part#: 11511734602
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$ 49.99 USD
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Includes O-ring and metal impeller


URO Auxiliary Fan Switch – 80-88°C - E36 Z3 M44
For vehicles with production date from 07/1996 to 03/1997
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T#:361655
Part#: 61318361787
Back Ordered
$ 26.99 USD
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$ 26.99 USD
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Restore the function of your fans.
Radiator Hose - Upper
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T#:373018
Part#: 11531720722
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$ 7.99 USD
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Hose from radiator to water pump
URO Coolant Temperature Sensor - BMW M44 M52 M62 M73 M54 S62 S50 S52 ...
For vehicles with production date up to 09/1998
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T#:639497
Part#: 13621703993
In Stock
$ 12.99 USD
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$ 12.99 USD
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URO Parts is one of the leading manufacturers of high quality direct replacement aftermarket components, covering a wide range of makes and models. All of their replacement parts are manufactured to ISO 9000 certification standards, so you can expect long lasting performance from URO Parts. As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts. All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!
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URO Parts Thermostat Assembly - 11537509227
For vehicles with production date from 09/1998
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T#:29466801
Part#: 11537509227
In Stock
$ 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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Coolant Hose
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T#:639233
Part#: 11531247398
In Stock
$ 11.99 USD
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Replace your leaking hose
Coolant Hose - Overflow from Expansion Tank to Radiator - E36, Z3 ...
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T#:13181
Part#: 17111723521
In Stock
$ 6.42 USD
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This is the small diameter overflow hose that goes from the coolant expansion tank to the radiator.

This item fits the following BMWs:
1992-1998 E36 BMW 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1997-1998 Z3 BMW Z3 2.8
1998-2000 Z3 BMW M Roadster M Coupe
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Radiator Mount Support - Upper
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T#:377277
Part#: 17111712911
In Stock
$ 2.99

This product was last offered at the strikethrough price on
12-19-2025

$ 1.67 USD
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$ 1.67 USD
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Secures the upper radiator bracket to core support.
URO Rubber Mount - Radiator - E30 E32 E34 E36 Z3
Lower
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T#:591951
Part#: 17111178412
Ships in 1 Business Day
$ 3.12 USD
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$ 3.12 USD
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URO Parts is one of the leading manufacturers of high quality direct replacement aftermarket components, covering a wide range of makes and models. All of their replacement parts are manufactured to ISO 9000 certification standards, so you can expect long lasting performance from URO Parts.
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URO Thermostat Housing Gasket - BMW M52TU M54
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T#:639269
Part#: 11537509357
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$ 2.99 USD
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Prevent leaks with a brand new thermostat housing gasket from URO

Cooling Hose Connector
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T#:373131
Part#: 11531714738
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$ 13.78 USD
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O-Ring included. URO Parts is one of the leading manufacturers of high quality direct replacement aftermarket components, covering a wide range of makes and models. All of their replacement parts are manufactured to ISO 9000 certification standards, so you can expect long lasting performance from URO Parts.
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Thermostat Housing
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T#:377315
Part#: 11531743679
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$ 9.14 USD
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Made to fit just like the stock unit, this replacement will get your coolant system back in top shape quickly. Broken, cracked, or brittle flanges are no longer a problem. Take the worries out of your morning commute with an inexpensive piece of mind.
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Water Hose
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T#:30463940
Part#: 11531743295
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$ 16.99 USD
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Radiator Hose - Lower
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T#:361988
Part#: 11531247261
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$ 9.99 USD
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Connects the thermostat to the lower radiator.
URO Coolant Expansion Tank - BMW E30 E36 Z3 M42 M44, E34 325 ...
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T#:362008
Part#: 17111712835
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$ 18.99 USD
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The coolant expansion tank in your vehicle gives additional fluid a place to go after expansion and contraction from temperature change. Because it is subjected to such drastic changes on a regular basis, it can often crack or break
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