BMW Cooling System Parts & Accessories for BMW E30 M3 S14 2.3L

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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#:3449
Part#: 11531309667KIT
Ships in 2 Business Days
$ 162.01 USD
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$ 162.01 USD
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This pacakge of six rubber cooling hoses for the E30 M3 includes most of the commonly replaced coolant lines on the S14. Set includes -
  • upper radiator hose from the large metal coolant pipe, #23 in the diagram
  • top thermostat hose to the large metal coolant pipe, #15 in the diagram
  • middle thermostat hose (T-shaped) to the small metal coolant pipe and to the water pump, #13 in the diagram
  • lower thermostat hose to the bottom of radiator, #22 in the diagram
  • lower radiator hose to coolant pipe, #24 in the diagram
  • expansion tank hose to the small metal coolant pipe, #17 in the diagram
    We use a mix if OE BMW and aftermarket hoses that we trust. This is the original E30 M3 Cooling Hose kit that we have been selling for 20 years. Looking for hose clamps too? We have OEM-style clamps for these too, select this in the options list below.

    This item fits the following BMWs:
    1988-1991 E30 BMW M3
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    Packaged by Turner - Corporate Logo
    T#:338252
    Part#: 11531309667KIT
    Ships in 2 Business Days
    Sale - Save 3% $ 216.99
    Starting at $ 210.38 USD
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    Sale - Save 3% $ 216.99
    Starting at $ 210.38 USD
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    This pacakge of six rubber cooling hoses for the E30 M3 includes most of the commonly replaced coolant lines on the S14. Set includes -
  • upper radiator hose from the large metal coolant pipe, #23 in the diagram
  • top thermostat hose to the large metal coolant pipe, #15 in the diagram
  • middle thermostat hose (T-shaped) to the small metal coolant pipe and to the water pump, #13 in the diagram
  • lower thermostat hose to the bottom of radiator, #22 in the diagram
  • lower radiator hose to coolant pipe, #24 in the diagram
  • expansion tank hose to the small metal coolant pipe, #17 in the diagram
    We use a mix if OE BMW and aftermarket hoses that we trust. This is the original E30 M3 Cooling Hose kit that we have been selling for 20 years. Looking for hose clamps too? We have OEM-style clamps for these too, select this in the options list below.

    This item fits the following BMWs:
    1988-1991 E30 BMW M3
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    Packaged by Turner - Corporate Logo
    T#:338019
    Part#: 17112225592
    Back Ordered
    Starting at $ 347.99 USD
    Starting at $ 347.99 USD
    This is a new stock E30 M3 Radiator. We offer both Genuine BMW or Nissens brand radaitors. The Genuine BMW radiator is the highest quality radiator available. The Nissens is a high quality aftermarket radatior.

    This item fits the following BMWs:
    1988-1991 E30 BMW M3
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    Packaged by Turner - Corporate Logo
    T#:337980
    Part#: 11511315211
    Back Ordered
    Starting at $ 299.99 USD
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    Starting at $ 299.99 USD
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    This is the stock replacement water pump for the E30 M3. This is the Genuine BMW pump and includes a new OE BMW gasket. It's always a good idea to have one as a spare. Even if it sits on your shelf for awhile it's going to be used at some point (and prices for Genuine E30 M3 parts aren't getting any lower). Aftermarket pumps have been in short supply and the quality hasn't been as good as the Original BMW pump so we have decided to stop offering aftermarket brands like Laso or Saleri. This is the Genuine BMW part, straight from BMW.

    This item fits the following BMWs:
    1987-1991 E30 BMW M3
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    OEM Style Hose Clamps
    10X Entries For Our Spin To Win Sweepstakes!
    Turner Motorsport - Corporate Logo
    T#:338927
    Part#: HOSE-CLAMPS
    In Stock
    Sale - Save 10% $ 3.99
    Starting at $ 3.59 USD
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    Sale - Save 10% $ 3.99
    Starting at $ 3.59 USD
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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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    Packaged by Turner - Corporate Logo
    T#:338650
    Part#: TMS16418
    Ships Mar 16, 2026
    Sale - Save 5% $ 636.99
    Starting at $ 604.52 USD
    Sale - Save 5% $ 636.99
    Starting at $ 604.52 USD
    This cooling package for the E30 M3 consists of all of the major components on the S14's cooling system. There are no major weak points to the E30's cooling system, unless you count skipped maintenance. The entire system is serviceable in individual components so you don't need to buy a complete package of parts. Many of the indivdual parts are on our site but we have setup this package to cover all or most of what you would need to perform a major overhaul. This overhaul package consists of an Genuine BMW radiator and then you build the package from there. Add hoses, sensors, water pumps, thermostats, gaskets, hose clamps, and more. We also sell the Original BMW antifreeze to finish off the job.

    Any problems with the cooling system are likely electrical. Sensors become corroded and fail over time which will send the incorrect signal to the corresponding unit, including the engine computer. Diagnosis of electrical type problems is easy and repair with the OEM Bosch or OE BMW sensors is not too expensive for a car like this. Electrical connections, particularly solder joints, can also become brittle and fail. These are not helped by the intense vibrations of the S14.

    Top Turner Tip for a healthy S14!
    E30 M3s always seem to have cooling problems at the most inconvenient time. If the temp gauge starts rising in the summer months first check and make sure your auxiliary cooling fan is working if it's not it's most likely the switch or the wiring going to the switch. Also remember that the E30 instrument conductor plate can make the gauge read whacky try tapping the gauge if it seems like it's acting up. When it's time to do a water pump (which weeps through a hole on the bottom before it goes completely) take a good look at the radiator too its not expensive and you have to remove it to install the pump anyway.

    Use the options below to build your package.

    This cooling package fits the following BMWs:
    1988-1991 E30 BMW M3
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    Genuine BMW - Corporate Logo
    T#:1474
    Part#: 82141467704
    In Stock
    Sale - Save 5% $ 27.84
    $ 26.45 USD
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    Sale - Save 5% $ 27.84
    $ 26.45 USD
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    The use of Original BMW Anti-Freeze/Coolant will ensure sufficient cooling in summer and protection against freeze-ups in winter. BMW Antifreeze/Coolant will also guard your vehicle's various engine components against corrosion.
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    Genuine BMW - Corporate Logo
    T#:3923
    Part#: 11531315537
    Ships Nov 5, 2025
    5% off MSRP $ 190.35
    $ 180.08 USD
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    5% off MSRP $ 190.35
    $ 180.08 USD
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    Engine running a little hot or is the temp gauge not telling you anything? The thermostat might be the likely problem. High-revving, spirited driven cars like the E30 M3 require the tip-top condition to perform well. The cooling system of the S14 one of those critical systems. This thermostat fits all 1987, 1988, 1989, 1990, and 1991 M3 (E30 chassis with S14 engine). Genuine BMW.

    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 item fits the following BMWs:
    1987-1991 E30 BMW M3
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    Genuine BMW - Corporate Logo
    T#:11239
    Part#: 71111179522
    Ships in 1 day
    3% off MSRP $ 31.99
    $ 30.99 USD
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    3% off MSRP $ 31.99
    $ 30.99 USD
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    Missing a tool from your trunk mounted tool kit? Replace your missing water pump pliers with this Genuine BMW part. Having a complete tool kit is handy for quick repairs or it can save you in case of roadside failures. Also a complete tool kitis must when selling a car. If the tool kit is missing parts, what else has been neglected on the car?

    This item fits the following BMWs:
    1970-1976 2002 BMW 1600 2002 2002tii
    1977-1983 E21 BMW 320i
    1984-1991 E30 BMW 318i 318is 318ic 325e 325es 325i 325ic 325is 325ix M3
    1992-1998 E36 BMW 318i 318is 318ti 318ic 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
    1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3
    1976-1978 E12 BMW 530i
    1982-1988 E28 BMW 528e
    1989-1995 E34 BMW 525i 530i 535i 540i M5
    1997-2003 E39 BMW 525i 528i 530i 540i M5
    1988-1994 E32 BMW 735i 735il 740i 740il 750il
    1995-2001 E38 BMW 740i 740il 750il
    1990-1999 E31 BMW 840i 840ci 850i 850ci 850csi
    1996-2000 Z3 BMW M Roadster M Coupe
    2000-2003 E52 BMW Z8 Roadster
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    Genuine BMW - Corporate Logo
    T#:22511
    Part#: 17112225348
    Ships Jul 1, 2025
    3% off MSRP $ 115.99
    $ 112.99 USD
    Free Shipping
    3% off MSRP $ 115.99
    $ 112.99 USD
    Free Shipping
    This radiator fan shroud mounts to the radiator on the e30 M3 with the S14 engine and helps to direct airflow through the radiator. It's also the mounting point for the coolant reservoir.

    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 item fits the following BMWs:
    1987-1991 E30 BMW M3
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    Genuine BMW - Corporate Logo
    T#:2305
    Part#: 11531309680
    Ships Jul 1, 2025
    Sale - Save 8% $ 26.99
    $ 24.73 USD
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    Sale - Save 8% $ 26.99
    $ 24.73 USD
    Free Shipping on orders $49 and up

    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 Upper Radiator Hose fits the following BMWs:
    1988-1991 E30 3 Series M3

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    Genuine BMW - Corporate Logo
    T#:30197990
    Part#: 11531315537KT
    Ships Nov 5, 2025
    $ 727.99 USD
    Free Shipping on orders $49 and up

    Maintaining your BMW's cooling system is crucial, especially since the water pump is a well-known weak point. Replacing the thermostat at the same time can help maintain optimal cooling system functionality.

    Kit Contents:

    Genuine BMW Remanufactured Water Pump Assembly with Metal Impeller (11511315211) Genuine BMW Thermostat Assembly - 80°C (11531315537) Genuine BMW Coolant/Antifreeze - Pre-diluted, 1 Gallon (82141467704) Genuine BMW Water Pump Gasket (11511309692) Benefits:

    Optimal Cooling Performance: Ensures your cooling system functions at peak efficiency. Enhanced Reliability: Replace worn components with high-quality, genuine BMW parts. Simplified Maintenance: All necessary parts included in one convenient kit. Extended Engine Life: Prevent overheating and thermal stress on engine components. Ideal for S14 Cooling System Maintenance

    Upgrade your BMW's cooling system with this expertly assembled kit featuring all Genuine BMW components.

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    Genuine BMW - Corporate Logo
    T#:10213
    Part#: 51731911369
    In Stock
    Sale - Save 5% $ 44.99
    $ 42.71 USD
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    Sale - Save 5% $ 44.99
    $ 42.71 USD
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    Genuine BMW Hose
    This item fits the following BMW Chassis:
    E30 M3,E30

    Genuine BMW Coolant Temperature Sensor
    For vehicles with production date from 12/1984
    Genuine BMW - Corporate Logo
    T#:376804
    Part#: 13621709967
    Ships in 1 day
    8% off MSRP $ 78.99
    $ 72.99 USD
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    8% off MSRP $ 78.99
    $ 72.99 USD
    Free Shipping
    Genuine BMW - Corporate Logo
    T#:368494
    Part#: 61311364272
    Ships Jul 1, 2025
    3% off MSRP $ 71.99
    $ 69.99 USD
    Free Shipping
    3% off MSRP $ 71.99
    $ 69.99 USD
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    Genuine BMW - Corporate Logo
    T#:213828
    Part#: 11521719040
    Ships in 1 day
    Sale - Save 3% $ 75.99
    $ 73.67 USD
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    Sale - Save 3% $ 75.99
    $ 73.67 USD
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    Genuine BMW Fan D=400 MM

    This item fits the following BMW Chassis:
    E30

    Fits BMW Engines including:
    M10,M42,S14

    Fits BMW Engines including:
    M10,M42,S14

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    Genuine BMW - Corporate Logo
    T#:368499
    Part#: 61311378320
    Ships in 1 day
    Sale - Save 5% $ 66.99
    $ 63.62 USD
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    Sale - Save 5% $ 66.99
    $ 63.62 USD
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    Genuine BMW - Corporate Logo
    T#:11059
    Part#: 64118391926
    Ships in 1 day
    3% off MSRP $ 103.99
    $ 100.99 USD
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    3% off MSRP $ 103.99
    $ 100.99 USD
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    Genuine BMW Thermostat
    This item fits the following BMW Chassis:
    E30 M3,E30


    Genuine BMW - Corporate Logo
    T#:368715
    Part#: 64211374908
    Ships Jul 1, 2025
    3% off MSRP $ 38.99
    $ 37.99 USD
    Free Shipping on orders $49 and up
    3% off MSRP $ 38.99
    $ 37.99 USD
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    Genuine BMW - Corporate Logo
    T#:367918
    Part#: 17121712736
    Ships Jul 1, 2025
    3% off MSRP $ 65.99
    $ 63.99 USD
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    3% off MSRP $ 65.99
    $ 63.99 USD
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    Genuine BMW - Corporate Logo
    T#:12998
    Part#: 11521723918
    Ships Jul 1, 2025
    Sale - Save 3% $ 299.99
    $ 290.43 USD
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    Sale - Save 3% $ 299.99
    $ 290.43 USD
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    Genuine BMW Fan Coupling - F&S

    This item fits the following BMW Chassis:
    E30,E34,E36

    Fits BMW Engines including:
    M10,M20,M30,M42,M44,S38


    Genuine BMW - Corporate Logo
    T#:45011
    Part#: 16131178014
    Ships Jul 1, 2025
    Sale - Save 3% $ 340.99
    $ 329.94 USD
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    Sale - Save 3% $ 340.99
    $ 329.94 USD
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    Genuine BMW Expansion Tank

    This item fits the following BMW Chassis:
    E30 M3,E30

    Fits BMW Engines including:
    M10,M20,M42,S14

    Genuine BMW - Corporate Logo
    T#:22513
    Part#: 17112227683
    Ships in 1 day
    4% off MSRP $ 26.99
    $ 25.99 USD
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    4% off MSRP $ 26.99
    $ 25.99 USD
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    Genuine BMW Radiator Cap - 1,4Bar
    This item fits the following BMW Chassis:
    E30 M3,E30

    Fits BMW Engines including:
    S14,S38

    Genuine BMW - Corporate Logo
    T#:12562
    Part#: 17112225543
    Ships Jul 1, 2025
    6% off MSRP $ 195.99
    $ 184.99 USD
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    6% off MSRP $ 195.99
    $ 184.99 USD
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    This Genuine BMW cooling system expansion tank / coolant reservoir is a direct replacement for the factory unit. Replace your cracked or leaking radiator expansion tank today and save your valuable S14 engine for damage.

    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 item fits the following BMWs:
    1988-1991 E30 BMW M3
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    Genuine BMW Coolant Temperature Sensor
    For vehicles with production date up to 09/1987
    Genuine BMW - Corporate Logo
    T#:360962
    Part#: 61311378073
    Ships Jul 2, 2025
    Sale - Save 3% $ 103.99
    $ 100.82 USD
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    Sale - Save 3% $ 103.99
    $ 100.82 USD
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    Genuine BMW - Corporate Logo
    T#:35825
    Part#: 11531309693
    Ships Jul 7, 2025
    $ 135.99 USD
    Free Shipping
    $ 135.99 USD
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    Genuine BMW Pipe
    This item fits the following BMW Chassis:
    E30 M3,E30

    Fits BMW Engines including:
    S14

    Genuine BMW - Corporate Logo
    T#:35826
    Part#: 11531309756
    Special Order: No Guaranteed ETA
    Sale - Save 3% $ 144.99
    $ 140.17 USD
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    Sale - Save 3% $ 144.99
    $ 140.17 USD
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    Genuine BMW Water Connector
    This item fits the following BMW Chassis:
    E30 M3,E30

    Fits BMW Engines including:
    S14


    Genuine BMW - Corporate Logo
    T#:3459
    Part#: 11511310640
    In Stock
    Sale - Save 3% $ 11.82
    $ 11.47 USD
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    Sale - Save 3% $ 11.82
    $ 11.47 USD
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    This BMW Motorsport part was designed for BMW touring car racing. This reverse thread nut covers the ugly exposed stud when you remove your engine fan and fan clutch. This simple part cleans up the look of an engine with the fan removed. Fits most BMW models. COOL!
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    Genuine BMW - Corporate Logo
    T#:6533
    Part#: 07129952104
    In Stock
    Sale - Save 15% $ 2.99
    $ 2.55 USD
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    Sale - Save 15% $ 2.99
    $ 2.55 USD
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    GENUINE BMW HOSE CLAMP 07129952104
    Genuine BMW - Corporate Logo
    T#:11526
    Part#: 82142209769
    In Stock
    Sale - Save 5% $ 12.30
    $ 11.69 USD
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    Sale - Save 5% $ 12.30
    $ 11.69 USD
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    This 1 liter bottle is perfect for topping of the coolant in your BMW. This is The use of Original BMW Anti-Freeze/Coolant will ensure sufficient cooling in summer and protection against freeze-ups in winter. BMW Antifreeze/Coolant will also guard your vehicle's various engine components against corrosion. BMW Anti-Freeze/ Coolant will prevent excessive silicate gel precipitation, which may cause plugging of the cooling system and lead to more extensive repairs.
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    Genuine BMW - Corporate Logo
    T#:7436
    Part#: 17111712963
    In Stock
    Sale - Save 5% $ 0.99
    $ 0.94 USD
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    Sale - Save 5% $ 0.99
    $ 0.94 USD
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    The most common use for this rivet is to secure the radiator fan shroud to the radiator. This rivet can also be used on a wide variety of other applications as well.

    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.
    Show More Show Less
    Genuine BMW - Corporate Logo
    T#:367933
    Part#: 17222245358
    In Stock
    Sale - Save 26% $ 2.99
    $ 2.21 USD
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    Sale - Save 26% $ 2.99
    $ 2.21 USD
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    Upgrade your BMW's oil or transmission cooling system with the Turner Motorsport Genuine O-Ring, part number 17222245358. This high-quality O-ring is designed to provide a reliable seal, ensuring optimal performance and preventing leaks in your BMW's vital systems. Additionally, it is compatible with MINI applications, where it is commonly used on the end of the parking brake cable.

    • Genuine BMW part for guaranteed quality and compatibility
    • Prevents leaks in the oil and transmission cooling systems
    • Ensures optimal performance of vital components
    • Compatible with MINI applications for versatile use
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    Genuine BMW - Corporate Logo
    T#:2672
    Part#: 11531309667
    In Stock
    $ 14.99 USD
    Free Shipping on orders $49 and up
    This Radiator Expansion Tank Hose fits the following BMWs:
    1988-1991 E30 3 Series M3

    Genuine BMW - Corporate Logo
    T#:2678
    Part#: 11531309668
    Ships Jul 1, 2025
    $ 15.99 USD
    Free Shipping on orders $49 and up
    This Lower Thermostat Hose fits the following BMWs:
    1988-1991 E30 3 Series M3
    Genuine BMW - Corporate Logo
    T#:69226
    Part#: 41111884357
    Ships Jul 1, 2025
    14% off MSRP $ 6.99
    $ 5.99 USD
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    14% off MSRP $ 6.99
    $ 5.99 USD
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    Genuine BMW Bracket F.Radiator
    This item fits the following BMW Chassis:
    E30 M3,E30

    Genuine BMW - Corporate Logo
    T#:69351
    Part#: 41111979496
    Ships Jul 2, 2025
    $ 12.99 USD
    Free Shipping on orders $49 and up


    Genuine BMW Bracket Radiator Right
    This item fits the following BMW Chassis:
    E30 M3,E30



    Genuine BMW - Corporate Logo
    T#:348252
    Part#: 17112225592
    Special Order: No Guaranteed ETA
    Sale - Save 5% $ 636.99
    $ 604.52 USD
    Sale - Save 5% $ 636.99
    $ 604.52 USD