Packaged by Turner Cooling System Service for BMW Z Series E85/6 (2003-2008)

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The cooling system is considered a weak point on several BMW generations. We put together cooling system service kits to help you get everything you need to refresh your system without any additional research. If you've done your research and know you only need one certain component, check out our Cooling category.
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Water Pump And Thermostat Kit
Water Pump And Thermostat Kit
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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
Free Shipping
Add to Wish List
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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Complete Cooling System Overhaul Package - 2003-4/2004 Z4 2.5 3.0
Complete Cooling System Overhaul Package - 2003-4/2004 Z4 2.5 3.0 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:339100
Part#: TMS224320
In Stock
Sale - Save 11% $ 507.99

This product was last offered at the strikethrough price on
01-08-2026

Starting at $ 454.24 USD
Free Shipping
Add to Wish List
Sale - Save 11%
$ 507.99

This product was last offered at the strikethrough price on
01-08-2026

Starting at $ 454.24 USD
Free Shipping
Add to Wish List
This is a customizable cooling system overhaul kit, which starts off with the basic radiator and water pump and can be configured to replace all the M54 common cooling system failure parts in one package. This cooling system package is for the 2003-2005 Z4 Roadster.

The Z4 cooling system is much like that of the sister 3 series. Several of the 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. Available with our kit is an OEM Behr radiator, an Original BMW water pump (with updated composite impeller), thermostat (complete with housing), radiator cap, new hoses, and other essential cooling parts.

Optional items (which can be added below):
  • Radiator cap
  • Major cooling hoses
  • Original BMW antifreeze
  • Upgrade the water pump to a Stewart EMP High Performance pump
  • Add a new coolant expansion tank (known for cracking)
  • Include a new coolant level sensor (known for failing / throwing "check coolant" messages)
  • Include a new coolant temp sensor (located in the lower radiator hose) (re-using the old sensor and seal may lead to a leak)
  • Add a new thermostat for an automatic transmission (located with the expansion tank).
    This cooling system overhaul kit fits the following BMWs:
    2003-2005 E85 BMW Z4 2.5i Z4 3.0i

    Please put a check in the boxes next to the items you wish to order.
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    Water Pump and Thermostat Package - N51/N52 Engine - E82 128i, E9X 325i/328i/330i, E60 528i
    Water Pump and Thermostat Package - N51/N52 Engine - E82 128i, E9X 32...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:42873693
    Part#: TMS206099GKT
    In Stock
    $ 728.38 USD
    Free Shipping on orders $49 and up
    Add to Wish List
    $ 728.38 USD
    Free Shipping on orders $49 and up
    Add to Wish List

     

    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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    Complete Cooling System Overhaul Package - 4/2004-2005 Z4 2.5 3.0
    Complete Cooling System Overhaul Package - 4/2004-2005 Z4 2.5 3.0 ...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:339099
    Part#: TMS16430
    In Stock
    Sale - Save 11% $ 507.99

    This product was last offered at the strikethrough price on
    01-08-2026

    Starting at $ 454.24 USD
    Free Shipping
    Add to Wish List
    Sale - Save 11%
    $ 507.99

    This product was last offered at the strikethrough price on
    01-08-2026

    Starting at $ 454.24 USD
    Free Shipping
    Add to Wish List
    This is a customizable cooling system overhaul kit, which starts off with the basic radiator and water pump and can be configured to replace all the M54 common cooling system failure parts in one package. This cooling system package is for the 2003-2005 Z4 Roadster.

    The Z4 cooling system is much like that of the sister 3 series. Several of the 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. Available with our kit is an OEM Behr radiator, an Original BMW water pump (with updated composite impeller), thermostat (complete with housing), radiator cap, new hoses, and other essential cooling parts.

    Optional items (which can be added below):
  • Radiator cap
  • Major cooling hoses
  • Original BMW antifreeze
  • Upgrade the water pump to a Stewart EMP High Performance pump
  • Add a new coolant expansion tank (known for cracking)
  • Include a new coolant level sensor (known for failing / throwing "check coolant" messages)
  • Include a new coolant temp sensor (located in the lower radiator hose) (re-using the old sensor and seal may lead to a leak)
  • Add a new thermostat for an automatic transmission (located with the expansion tank).
    This cooling system overhaul kit fits the following BMWs:
    4/2004-2005 E85 BMW Z4 2.5i Z4 3.0i

    Please put a check in the boxes next to the items you wish to order.
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