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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Turner Motorsport - Corporate Logo
T#:9998526
Part#: 008348LA01BKT
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Our Turner Motorsport's full aluminum expansion tank was designed and engineered in house to help with the weak point in your E36 cooling system. The coolant expansion tank goes through heat cycles over and over again from regular driving, it is important that your expansion tank is doing its job to retain coolant to keep your engine operating temperatures down and keep your engine bay clean. Not only is this a major upgrade but also a great maintenance item to replace. Our expansion tank was designed to fit the OEM hoses for an easy install and comes with all the upgraded items you will need for a clean install,

If your E36 needs a new expansion tank, make sure this is the last expansion tank you ever need to buy. Our coolant expansion tank has a full aluminum construction and wrinkle black powder coat for durability. Expansion tank kit comes with all the accessories you need to replace your expansion tank once, and never have to worry about it again.

Aluminum Coolant Expansion Tank Features:

- Maintains stock coolant capacity and expansion volume

- Designed to maintain OE coolant elevation, preventing air pockets

- Baffled tank ensures that air pockets cannot be introduced during aggressive driving and provides accurate coolant level reading

- Carefully designed bleed passage prevents the introduction of air as the engine cools

- Turner engraved internal fill level

- TIG welded 5052 aluminum construction

- All bungs are machined to fit factory hose ends

Kit contents:

Turner Aluminum Expansion Tank
Coolant level sensor
Expansion tank cap
Heavy duty bleeder screw
Flared coolant pressure release line
Hardware for installation

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Packaged by Turner - Corporate Logo
T#:339091
Part#: TMS16426
Ships in 2 Business Days
Sale - Save 14% $ 628.99

This product was last offered at the strikethrough price on
06-15-2026

Starting at $ 539.49 USD
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Sale - Save 14%
$ 628.99

This product was last offered at the strikethrough price on
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This is a compete cooling system overhaul kit, which includes all of the common Z3 M52 cooling system failure parts bundled into a complete package. This cooling system package is for the 1997-1998 Z3 2.8 Roadster and 1998-2000 MZ3 M Roadster or M Coupe.

The Z3 cooling system's primary cooling components are prone to failure within 60k miles (or less in many cases). 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 radiator & 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 cooling system. Our kit includes one OEM Behr radiator, an Original BMW waterpump (with updated composite impeller and O-ring), thermostat (complete with O-ring), aluminum thermostat housing, profile gasket, radiator cap and new hoses (as pictured).

Optional items (which can be added below):
- Upgrade the waterpump to a Stewart/EMP High Performance pump
- Original BMW antifreeze
- Add a new coolant expansion tank (known for cracking)

Buy as a package and save!!

This cooling system overhaul kit fits the following BMWs:
1997-1998 Z3 2.8 M52 Roadster
1998-2000 Z3 M Roadster, M Coupe
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Packaged by Turner - Corporate Logo
T#:557215
Part#: E36M44BCKT
Ships on Sep 29, 2026
Sale - Save 3% $ 252.99

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

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$ 246.54 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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Turner Motorsport - Corporate Logo
T#:338927
Part#: HOSE-CLAMPS
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This product was last offered at the strikethrough price on
06-13-2026

Starting at $ 3.87 USD
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$ 3.99

This product was last offered at the strikethrough price on
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Hose clamps for radiator hoses, coolant hoses, vacuum hoses, or intake hoses. These hose clamps are the same style as your OEM hoses with a smooth inside band to prevent cutting into the hose material.
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Genuine BMW - Corporate Logo
T#:19209
Part#: 11531716641
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Sale - Save 5% $ 44.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 42.73 USD
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$ 44.99

This product was last offered at the strikethrough price on
06-25-2026

$ 42.73 USD
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This is the upper radiator hose that goes from the thermostat the the upper left of the radiator.

This item fits the following BMWs:
1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
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Genuine BMW - Corporate Logo
T#:19210
Part#: 11531716642
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Sale - Save 2% $ 44.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 43.99 USD
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$ 44.99

This product was last offered at the strikethrough price on
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$ 43.99 USD
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This is a replacement Lower Radiator Hose for Z3. This hose goes from the thermostat housing to the lower right side of the radiator. When replacing any cooling component it is a good idea to check all radiator hoses and replace as necessary.

This item fits the following BMWs:
1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
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Genuine BMW - Corporate Logo
T#:35728
Part#: 11527831113
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MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 95.41 USD
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This product was last offered at the strikethrough price on
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Genuine BMW Fan 11 Blade - D=420mm

Fits BMW Engines including:
S54


Genuine BMW Water Pump Pulley
For vehicles with production date from 09/1998
Genuine BMW - Corporate Logo
T#:4472
Part#: 11511436590
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Sale - Save 6% $ 73.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 69.65 USD
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SEE T#337981

Genuine BMW - Corporate Logo
T#:623
Part#: 11517527799
Ships in 6 Business Days
Sale - Save 5% $ 237.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 225.42 USD
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The early M50/M52 engines had a serious weak point: the water pump. BMW originally used a plastic impeller in the water pump. This would degrade over time and eventually break apart. Your car overheats immediately. This water pump is the latest updated part with a composite impeller. The composite is stronger and lighter than the less-expensive metal impeller version. And it does not suffer from the problems of the early plastic design.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This waterpump fits the following BMWs:
1992-1999 E36 3 series - 323is, 323ic, 325i, 325is, 325ic, 328i, 328ic, M3 3.0 (S50/US), M3 3.2 (S52)
1991-1995 E34 BMW 525i
1997-1998 E39 5 series - 528i
1996-1998 Z3 - Z3 2.8,
1998-2000 Z3 Roadster/Coupe - M Roadster, M Coupe (S52)
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Genuine BMW - Corporate Logo
T#:55245856
Part#: 0711990XXKTKT
Ships in 6 Business Days
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$ 35.31 USD
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Turner Motorsport offers this Genuine BMW Hex Bolt and Washer Kit to keep your chassis maintenance or engine refresh completely up to factory standard.
Genuine BMW - Corporate Logo
T#:55209926
Part#: 0071199KT
In Stock
New Item
$ 7.94 USD
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This Genuine BMW water pump installation hardware kit is the exact factory refresh package needed to maintain the structural integrity of your cooling system's plumbing.


Genuine BMW - Corporate Logo
T#:55281750
Part#: 1722OCLKT
Ships in 3 Business Days
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$ 20.60 USD
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This Genuine BMW Oil Cooler Line O-Ring & Screw Kit includes the exact factory components required to safely service your oil cooler hard lines.
Genuine BMW - Corporate Logo
T#:55245854
Part#: 1711117XKT
Ships in 3 Business Days
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$ 26.92 USD
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This Genuine BMW Lower Radiator Mount and Bracket Refresh Kit supplies the factory-original hardware needed to overhaul your lower radiator supports.