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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OEM Style Hose Clamps
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Turner Motorsport - Corporate Logo
T#:338927
Part#: HOSE-CLAMPS
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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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Genuine BMW - Corporate Logo
T#:1474
Part#: 82141467704
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$ 26.45 USD
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$ 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
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3% off MSRP $ 115.99
$ 112.99 USD
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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
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$ 24.73 USD
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$ 24.73 USD
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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
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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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$ 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
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Genuine BMW - Corporate Logo
T#:368494
Part#: 61311364272
Ships Jul 1, 2025
3% off MSRP $ 71.99
$ 69.99 USD
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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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$ 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
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$ 63.62 USD
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$ 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
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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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$ 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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$ 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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$ 100.82 USD
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Genuine BMW - Corporate Logo
T#:35825
Part#: 11531309693
Ships Jul 7, 2025
$ 135.99 USD
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$ 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

Chase Bays - Corporate Logo
T#:22690764
Part#: CB-E306RAD-15 &
Back Ordered
$ 719.99 USD
$ 719.99 USD

Chase Bays Tucked Radiator for BMW is here! Engineered to optimize space and cooling performance in BMW engine bays. This radiator features a dual-pass design, increased fluid capacity, and direct airflow for enhanced efficiency.

  • Frees up to 6" of space in the engine bay
  • Enhanced cooling performance with increased fluid capacity
  • Dual pass design for optimal cooling efficiency
  • Comes with ultra high-quality ring sets, lightweight pins, and locks
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Genuine BMW - Corporate Logo
T#:3459
Part#: 11511310640
In Stock
Sale - Save 3% $ 11.82
$ 11.47 USD
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$ 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
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$ 2.55 USD
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$ 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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$ 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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$ 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.
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Genuine BMW - Corporate Logo
T#:367933
Part#: 17222245358
In Stock
Sale - Save 26% $ 2.99
$ 2.21 USD
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$ 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
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This Radiator Expansion Tank Hose fits the following BMWs:
1988-1991 E30 3 Series M3
Chase Bays - Corporate Logo
T#:23980279
Part#: CB-IFN-150-CB-RA
Ships in 8 Business Days
$ 168.99 USD
$ 168.99 USD
The Chase Bays Raised Inline Filler Neck offers a unique set of innovative features. It is designed to solve a major set of problems in an aesthetically pleasing and modular way. Raised Fill Point Many might not understand this yet but for other half; they're jumping for joy. This is a feature no other company is offering. A major issue with some engines (especially engine swaps) is the difficulty in bleeding the system. The fill point on the radiator is lower than the coolant passages in the cylinder head or the heater core. This causes unsolvable air bubbles that continue to accumulate as the system cycles. Even when you use coolant bleeding kits, it puts the cap and overflow point below those coolant passages. This causes the cap to overflow more fluid per second if the pressure level of your cap is exceeded. All in all, its an issue enthusiasts have been dealing with for decades. Our filler neck raises the fill point 3.75" inches / 95.25mm from the center of lower fitting to where the cap seal ends (not the very top). The total height from bottom to top is 5.25" inches / 133.35mm. It installs by welding one of the adapters directly to the upper water neck. You can see example photos below. You can also butt the filler neck up to the water neck and use a short piece of hose to connect the two. That method will take up to 3" inches / 76.2mm more space, but in some scenarios space is not an issue. Side Ports There are two 1/8 NPT ports on the filler neck, one on each side. These are in place for accessories you may need to plumb in. Water Temp Sensor, Fan Thermoswitch, Freeze Port, etc. If you don't need to add anything we provide matching black NPT plugs for a seamless dismissal. Construction It is machined out of 6061 billet aluminum, bead blasted, then anodized semi-gloss black. The Chase Bays logo is laser etched white on both sides. It uses a Type A Radiator Cap thats extremely common on imports. We sell one of our own as an option on this page. The overflow port is 1/8 NPT threads and has a 1/4 Hose Barb connection standard.
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Genuine BMW - Corporate Logo
T#:2678
Part#: 11531309668
Ships Jul 1, 2025
$ 15.99 USD
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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
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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