BMW Cooling System Parts & Accessories for BMW E39 M5 S62 5.0L

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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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Thermostat Replacement Kit - E39 M5
Thermostat Replacement Kit - E39 M5
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:554086
Part#: 11537835558KT7
Ships in 3 Business Days
$ 170.99

This product was last offered at the strikethrough price on
04-21-2026

$ 158.99 USD
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$ 158.99 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:

  • Behr thermostat with gasket
  • Thermostat mounting hardware
  • 1 Gal Genuine BMW coolant

 

This thermostat fits the following BMWs: 
1998-2004 E39 BMW M5 

 

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Complete Cooling System Overhaul Package - 2000-2003 E39 M5
Complete Cooling System Overhaul Package - 2000-2003 E39 M5
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:338714
Part#: TMS14418
Ships in 3 Business Days
$ 1,201.99

This product was last offered at the strikethrough price on
06-05-2026

Starting at $ 1,132.44 USD
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Starting at $ 1,132.44 USD
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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 1999-2003 E39 M5 with the S62 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. Our bundled package includes the following:
  • OEM Behr radiator
  • OEM Laso or OE BMW water pump with gasket
  • OE BMW coolant temp sensor (located in the water pump housing)
  • OEM Behr thermostat with o-ring
  • OE BMW o-rings for the inner coolant tubes
  • OE BMW expansion tank cap
  • OE BMW upper and lower radiator hoses with OE-style clamps
  • OE BMW expansion tank hose with OE-style clamps
    Optional items (which can be added below):
    - OE BMW antifreeze
    - Add a new coolant level sensor (known for failing / throwing "check coolant" messages)
    - Add a new plastic expansion tank (if it's never been changed it's a risk of a crack or leak)
    - Add a new fan clutch

    Buy as a package and save $$$!

    This cooling system overhaul kit fits the following BMWs:
    1999-2003 E39 BMW M5
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    Cooling System Overhaul Kit - E39 M5
    Cooling System Overhaul Kit - E39 M5
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:554556
    Part#: 17111436062KT2
    Ships in 4 Business Days
    $ 2,392.99

    This product was last offered at the strikethrough price on
    08-14-2026

    $ 2,326.99 USD
    Add to Wish List
    $ 2,326.99 USD
    Add to Wish List
    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 1999-2003 E39 M5 with the S62 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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    OEM Nissens Radiator - E39 540i M5 E38 740/750 (09/1998+), E52 Z8 & Z8 Alpina
    OEM Nissens Radiator - E39 540i M5 E38 740/750 (09/1998+), E52 Z8 & Z...
    Nissens - Corporate Logo
    T#:380578
    Part#: 17111436063
    In Stock
    $ 188.99 USD
    Add to Wish List
    $ 188.99 USD
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    This radiator is made by Nissens, an original equipment supplier to BMW. The cooling system is a weak point on most BMWs, causing many BMWs to develop issues in as few as 50,000 miles. Overheating your engine can and usually will result in large repair bills and sometimes a warps the cylinder head(s), requiring intensive repair or full replacement. Prevent potential failure by replacing your radiator early, keeping your BMW happy and cool. This is the brand we use exclusively on our own BMWs, and think you should as well! 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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    OEM Nissens Air Conditioning Pusher Fan - E39 BMW 528i 540i M5 (up to 09/1998)
    OEM Nissens Air Conditioning Pusher Fan - E39 BMW 528i 540i M5 (up to...
    For vehicles with production date up to 09/1998
    For vehicles with production date up to 09/1998
    Nissens - Corporate Logo
    T#:591464
    Part#: 64548380780
    Back Ordered
    $ 295.99 USD
    Free Shipping
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    $ 295.99 USD
    Free Shipping
    Add to Wish List
    This is the fan that turns on when the air conditioning is activated electronically. It’s not driven by the belt and it pushes air through the condenser. If it breaks, it might be an electrical issue that usually occurs in the motor within the fan, as it will fail to engage. There is also a chance that the blades might get damaged as well. No matter how your fan got damaged, be sure to replace it to keep air circulating evenly.
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