BMW Cooling System Parts & Accessories for BMW 5 Series E34 (1987-1995)

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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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Genuine BMW - Corporate Logo
T#:367686
Part#: 11531720173
Ships in 1-2 days
3% off MSRP $ 29.99

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

$ 28.99 USD
Free Shipping on orders $49 and up
3% off MSRP
$ 29.99

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

$ 28.99 USD
Free Shipping on orders $49 and up
Beru - Corporate Logo
T#:596874
Part#: 12621288158
Ships in 1 day
$ 44.99 USD
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$ 44.99 USD
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M14x1.5 Thread. Your vehicle is equipped with numerous gauges to allow you to have a better idea of what is going on under the hood. By monitoring these gauges, you can prevent premature engine damage due to low oil pressure or high coolant temperatures. If one isn't functional though, you are in the dark as far as that system goes. One of the most vital is coolant temperature. Replace the sensor to get your gauge working properly again.
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Genuine BMW - Corporate Logo
T#:35831
Part#: 11531312635
Ships in 1-2 days
$ 13.99 USD
Free Shipping on orders $49 and up


Genuine BMW Gasket Ring
This item fits the following BMW Chassis:
E34 M5,E34

Fits BMW Engines including:
S38


Febi Bypass Hose - E12, E23, E24, E28, E3, E32, E34, E9
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:382396
Part#: 11531266459
Ships in 3 Business Days
$ 9.17 USD
Free Shipping on orders $49 and up
Water pump to thermostat housing

Genuine BMW - Corporate Logo
T#:43723
Part#: 13901741760
Ships in 7 Business Days
$ 7.99 USD
Free Shipping on orders $49 and up


Genuine BMW Bracket Breather Pipe - Akf
This item fits the following BMW Chassis:
E34

Fits BMW Engines including:
M60

TYC - Corporate Logo
T#:556566
Part#: 661230
Ships in 1 day
$ 166.99

This product was last offered at the strikethrough price on
05-07-2026

$ 161.99 USD
Free Shipping
$ 161.99 USD
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Genuine BMW - Corporate Logo
T#:368718
Part#: 64211384763
Ships in 4 Business Days
3% off MSRP $ 109.99

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

$ 106.99 USD
Free Shipping
3% off MSRP
$ 109.99

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

$ 106.99 USD
Free Shipping
Genuine BMW - Corporate Logo
T#:45743
Part#: 17111719312
Ships in 7 Business Days
$ 25.99 USD
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Genuine BMW Covering Left -
This item fits the following BMW Chassis:
E34

Fits BMW Engines including:
M60,M70


Hella Coolant Temperature Sender - E31, E32, E34, E36, E38
For vehicles with production date from 09/1992
Hella - Corporate Logo
T#:580139
Part#: 9107471
Ships in 3 Business Days
$ 15.99 USD
Free Shipping on orders $49 and up
$ 15.99 USD
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2 pin

Victor Reinz - Corporate Logo
T#:580584
Part#: C32348
Ships in 6 Business Days
$ 3.99

This product was last offered at the strikethrough price on
05-07-2026

$ 2.99 USD
Free Shipping on orders $49 and up
$ 2.99 USD
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Genuine BMW - Corporate Logo
T#:150799
Part#: 64218367932
Ships in 7 Business Days
2% off MSRP $ 164.99

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

$ 160.99 USD
Free Shipping
2% off MSRP
$ 164.99

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

$ 160.99 USD
Free Shipping


Genuine BMW Return Hose -
This item fits the following BMW Chassis:
E34

Victor Reinz - Corporate Logo
T#:376106
Part#: 11511731372
Ships in 6 Business Days
$ 7.99

This product was last offered at the strikethrough price on
07-23-2026

$ 7.13 USD
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$ 7.13 USD
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Should be replaced each time the water pump is removed


MTC - Corporate Logo
T#:371228
Part#: 17111742232
Ships in 9 Business Days
$ 6.99 USD
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$ 6.99 USD
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1.4 Bar pressure. Older radiator caps being to lose their ability to hold pressure over time. Resulting in a lower boiling point for the coolant system.
Cooling Fan Assembly
We Price Match - Give Us A Call or Chat!
VDO - Corporate Logo
T#:31291056
Part#: 64541392913
Ships on Oct 23, 2026
$ 161.99 USD
Free Shipping on orders $49 and up
Mahle-Behr - Corporate Logo
T#:20716
Part#: 17111468080
Ships on Oct 23, 2026
$ 260.99 USD
$ 260.99 USD

A common failure item on the 1989-1992 e34 535, E32 735i/ili with Automatic transmission is the radiator. It is such a common failure item we recommend replacing this item preventatively every 80,000 miles. This Radiator is made by Hella/Behr, a high quality OE manufacturer. OEM replacement for BMW part # 17111723467, 17111709459, 17111712360.

Hella is a premium manufacturer that supplies automotive parts to numerous car brands across the world. Everything from electrical to mechanical genuine parts have been made and supplied directly to BMW before the vehicles ever leave the production floor. Their high quality, long lasting parts have made them a trusted brand chosen to help keep your BMW on the road for many years to come.

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!

This item fits the following BMWs:
1989-1993 E34 BMW 535i
1988-1992 E32 BMW 735i 735il

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Gates - Corporate Logo
T#:591715
Part#: 11511719836
Ships on Oct 27, 2026
$ 122.99 USD
Free Shipping on orders $49 and up
$ 122.99 USD
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Includes gasket. New - not remanufactured!

Gates - Corporate Logo
T#:591781
Part#: 11531722215
Ships on Oct 27, 2026
$ 42.99 USD
Free Shipping on orders $49 and up
Upper hose that connects your radiator to the flange
Gates Throttle Body Return Hose - E34
For vehicles with a production date from 03/1991
Gates - Corporate Logo
T#:591790
Part#: 11531738054
Ships on Oct 27, 2026
$ 64.99 USD
Free Shipping
$ 64.99 USD
Free Shipping
Replace your leaking hose

Gates - Corporate Logo
T#:591784
Part#: 11531722852
Ships on Oct 27, 2026
$ 15.99 USD
Free Shipping on orders $49 and up
Hose from radiator to thermostat housing
FAE Water Temperature Sensor - E31, E32, E34, E38
Located in the water accumilator Located in the thermostat housing. For vehicles with electronic engine-power requlation
FAE - Corporate Logo
T#:7171
Part#: 12621288158
Ships on Oct 30, 2026
$ 16.99 USD
Free Shipping on orders $49 and up
$ 16.99 USD
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ENGINE ELECTRICAL TEMPERATURE SENSOR, WATER 12621288158

Genuine BMW - Corporate Logo
T#:367690
Part#: 11531722682
Ships in 7 Business Days
$ 94.99 USD
Free Shipping
$ 94.99 USD
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Elring Thermostat Gasket - BMW M60 M62 M70 S70
2X Entries Into Our F80 M3 Sweepstakes
Elring - Corporate Logo
T#:45005599
Part#: 818.437
Special Order: No Guaranteed ETA
$ 2.99 USD
Free Shipping on orders $49 and up
This rubber gasket seals the junction between the thermostat and water pump Measurements: 4.0x76.5mm
Bremmen Parts - Corporate Logo
T#:640149
Part#: 11521712058
In Stock
Sale - Save 22% $ 23.99

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

$ 18.76 USD
Free Shipping on orders $49 and up
Sale - Save 22%
$ 23.99

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

$ 18.76 USD
Free Shipping on orders $49 and up
This fan is driven by the serpentine belt, engaged by the fan clutch. If you have bad motor mounts, it's quite common for the blades of this fan to make contact with the radiator or radiator shroud, essentially self-destructing the fan into many pieces. Be sure to get a new fan clutch, while you are replacing this.
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Radiator Fan Clutch
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:57304041
Part#: 11527831619
Ships on Dec 29, 2026
New Item
$ 75.99 USD
Free Shipping on orders $49 and up


Febi Radiator Fan Clutch - E31, E32, E34, E38, E39
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:341629
Part#: 11527502804
Special Order: No Guaranteed ETA
$ 109.99 USD
Free Shipping
$ 109.99 USD
Free Shipping
Quality aftermarket replacement
Radiator Fan Clutch
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:56507828
Part#: 11527502804
Special Order: No Guaranteed ETA
New Item
$ 85.99 USD
Free Shipping on orders $49 and up
URO Expansion Tank Cap - BMW E30
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:592118
Part#: 17111468077
In Stock
$ 6.99 USD
Free Shipping on orders $49 and up

URO Expansion Tank Cap - BMW E30

The URO Expansion Tank Cap - BMW E30 is a crucial component for maintaining optimal cooling system performance by ensuring proper pressure regulation. Over time, older radiator caps lose their ability to hold pressure, leading to a lower boiling point and potential overheating issues. This high-quality replacement cap is designed to restore factory pressure levels, preventing coolant loss and maintaining engine efficiency. Crafted from durable materials, it resists wear and temperature fluctuations, ensuring long-lasting reliability.

  • Direct replacement for BMW E30 models
  • Maintains correct cooling system pressure to prevent overheating
  • Helps sustain optimal engine temperature and performance
  • High-quality construction for durability and reliability
  • Prevents coolant evaporation and system inefficiencies
  • Easy installation with OE-style fitment
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Rein Thermostat 80C - E30 325e, E28 535i, E24 633CSi
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:34114243
Part#: 11531710953
Ships in 1 Business Day
$ 19.99 USD
Free Shipping on orders $49 and up

Thermostat 80C is a crucial component for controlling the temperature in BMW engines, ensuring optimal performance and protection. Designed to open at 80°C, this thermostat helps your engine reach its ideal operating temperature quickly while preventing overheating. Engineered specifically for BMW vehicles, the Thermostat 80C ensures precise temperature regulation, enhancing both engine efficiency and longevity. Available at Turner Motorsport, this direct-fit replacement offers easy installation and reliable performance.

  • Designed for BMW engines for a perfect fit
  • Opens at 80°C to regulate coolant flow and maintain optimal temperature
  • Prevents overheating and improves engine efficiency
  • Manufactured from high-quality, durable materials for long-lasting use
  • Direct-fit replacement ensures hassle-free installation
  • Enhances overall engine performance and longevity

The Thermostat 80C from Turner Motorsport is the perfect choice for BMW owners looking to maintain optimal engine temperature, ensuring smooth operation and extending the life of their vehicle.

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Victor Reinz - Corporate Logo
T#:19371
Part#: 11121726721
Back Ordered
$ 3.05 USD
Free Shipping on orders $49 and up


GASKET ASBESTOS FREE 11121726721 Manufactured by Reinz

Radiator Hose - Upper
For vehicles with production date from 03/1995
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:373024
Part#: 11531741405
Ships in 1 Business Day
$ 8.99 USD
Free Shipping on orders $49 and up
$ 8.99 USD
Free Shipping on orders $49 and up
Hose from radiator to water pump

Febi Coolant Temperature Sender - E31, E32, E34, E36, E38
For vehicles with production date from 09/1992
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:382428
Part#: 12621747281
In Stock
$ 20.99 USD
Free Shipping on orders $49 and up
$ 20.99 USD
Free Shipping on orders $49 and up
2 pin
Gates - Corporate Logo
T#:592903
Part#: 11531287651
Back Ordered
$ 20.99 USD
Free Shipping on orders $49 and up
From water pump to thermostat housing

OEM Behr Radiator - E34 525i M20 & M50
For Vehicles with production date from 09/1992
Genuine BMW - Corporate Logo
T#:391244
Part#: 17111737763
Back Ordered
6% off MSRP $ 834.99

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

$ 786.99 USD
6% off MSRP
$ 834.99

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

$ 786.99 USD
OEM Behr Radiator - 520mmA common failure item on the 1989-1995 E34 525i is the radiator. It is such a common failure item we recommend replacing this item preventatively every 80,000 miles. This Radiator is made by Behr, a high quality OE manufacturer.

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:
1989-1990  E34 BMW  525i - Manual Transmission
1993-1995  E34 BMW  525i - Automatic Transmission
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Coolant Expansion Tank With Cap - 17111712835
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:46616014
Part#: EPK0012
Back Ordered
$ 29.99 USD
Free Shipping on orders $49 and up
The coolant expansion tank provides a place for excess fluid as coolant expands and contracts with temperature changes. Constant exposure to these extremes can cause the tank to crack, break, or suffer damage to its nipples or mounting points. To keep your cooling system sealed and functioning properly, any damaged tank should be replaced.
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Rein Heater Hose - E32, E34
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:20514
Part#: 64211390935
Back Ordered
$ 12.99 USD
Free Shipping on orders $49 and up


HOSE F WATER VALVE AND LEFT 64211390935 Manufactured by CRP

Meyle Expansion Tank Cap
5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
Meyle - Corporate Logo
T#:5958735
Part#: 17111742232
Back Ordered
$ 10.99 USD
Free Shipping on orders $49 and up
Wulf Gaertner Autoparts AG manufactures and markets automotive spare parts under its MEYLE brand. Since its foundation in 1958, Wulf Gaertner Autoparts has been an owner-operated, unlisted family business on the aftermarket scene. Since 1995, Wulf Gaertner Autoparts AG has been manufacturing and trading under its MEYLE brand. They pride themselves on top-grade quality-tested spare parts for passenger cars, vans and commercial vehicles. The coolant expansion tank cap keeps necessary pressure on your coolant to increase efficiency. If you have an overheating issue in your vehicle, a simple, quick, and inexpensive part to replace is this cap. Often times, the coolant is not kept under enough pressure to keep it from boiling or expanding too much. This cap keeps all the heat and liquid inside the coolant system for maximum efficiency. Should be replaced each time major coolant system service is performed.
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Gates - Corporate Logo
T#:591777
Part#: 11531720678
Back Ordered
$ 18.99 USD
Free Shipping on orders $49 and up
Hose from radiator to water pump
MTC - Corporate Logo
T#:361005
Part#: 17111178412
Back Ordered
$ 2.03 USD
Free Shipping on orders $49 and up
This is the small lower rubber mount that goes on the bottom of the radiator. These mounts sit down into mount 17111723337. Fits left or right side - priced each
Behr - Corporate Logo
T#:1195792
Part#: 17111723467
Back Ordered
$ 273.99

This product was last offered at the strikethrough price on
05-07-2026

$ 265.99 USD
$ 265.99 USD
OE replacement radiator

Gates - Corporate Logo
T#:592918
Part#: 11531718982
Back Ordered
$ 20.99 USD
Free Shipping on orders $49 and up
Connects between the Water pump and the thermostat