BMW Cooling System Parts & Accessories for BMW 7 Series E23 (1978-1987)

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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#:28891
Part#: 07129905494
In Stock
5% off MSRP $ 7.74

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

$ 7.33 USD
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5% off MSRP
$ 7.74

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

$ 7.33 USD
Free Shipping on orders $49 and up
Genuine water pump hardware. M6x16-8.8. 6 of these screws are found in association with the water pump
Redline - Corporate Logo
T#:3607
Part#: 1-WW-12Z
In Stock
$ 15.99 USD
Free Shipping on orders $49 and up
Water Wetter is a unique wetting agent for cooling systems which reduces coolant temperatures by as much as 30*F. This liquid product can be used to provide rust and corrosion protection in plain water for racing engines, which provides much better heat transfer properties than glycol-based antifreeze. Or it can be added to new or used antifreeze to improve the heat transfer of ethylene and propylene glycol systems. Designed for modern aluminum, cast iron, copper, brass, and bronze systems.

We have been using RedLine Oil in our street cars and race cars for years. Hands-down, it is the Number One brand of high performance lubricant for BMWs.
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90-110mm 3/8"/9mm Band Hose Clamp
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:341281
Part#: 003402ECS06A-13
In Stock
$ 4.19 USD
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ECS Tuning 304 Stainless Steel Hose Clamps

Once again, ECS Tuning has found a way to make life easier for working on your car. Need new hose clamps but don't want to wait to order it from the dealership or pay more than you should for a hose clamp? That's where we come in! These are full 304 stainless steel hose clamps with various band widths for your convenience. They are German style using T-bolts to adjust in size to your required diameter. Never pay dealer pricing again, but still get the quality you love here at ECS Tuning.

  • Made from high-quality 304 stainless steel for durability
  • German-style design with T-bolts allows for easy size adjustment
  • Various band widths for versatile use
  • Avoid dealership pricing without compromising on quality
  • Perfect for BMW enthusiasts seeking affordable yet reliable hose clamps
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Genuine BMW - Corporate Logo
T#:11526
Part#: 82142209769
In Stock
$ 10.60

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

$ 10.57 USD
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$ 10.57 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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3/8"/9mm Band Hose Clamp - 50-70mm
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:341684
Part#: 003402ECS06A-12
In Stock
Sale - Save 43% $ 6.99

This product was last offered at the strikethrough price on
06-13-2026

$ 4.00 USD
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Sale - Save 43%
$ 6.99

This product was last offered at the strikethrough price on
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$ 4.00 USD
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Elevate your BMW maintenance with ECS Tuning's 304 stainless steel hose clamps, offering convenience and top-quality performance at an affordable price. Designed with various band widths and German-style T-bolts for adjustable sizing, these hose clamps ensure a secure fit for your specific diameter needs. Skip the dealership wait and excessive pricing; ECS Tuning provides reliable, dealership-quality hose clamps without the premium cost, ensuring your car receives the care it deserves.
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Meyle - Corporate Logo
T#:54852031
Part#: 028 280 0004
In Stock
New Item
$ 11.99 USD
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This Meyle-Original replacement thermostat is a direct-fit solution designed to maintain a rock-solid, factory-correct 80�C operating temperature.

URO Expansion Tank Hose - 17121712736
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:50066848
Part#: 17121712736
In Stock
$ 12.79

This product was last offered at the strikethrough price on
08-31-2026

$ 10.99 USD
Limited Qty Sale
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$ 12.79

This product was last offered at the strikethrough price on
08-31-2026

$ 10.99 USD
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Coolant overflow hose designed to route excess coolant to and from the expansion tank, helping regulate system pressure and maintain proper coolant levels. Manufactured for correct fit and flow, it ensures reliable expansion tank operation and leak-free performance.
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Schwaben Radiator/ Intercooler Fin Comb
10X Entries Into Our F80 M3 Sweepstakes
Schwaben - Corporate Logo
T#:384260
Part#: 015326SCH01A
In Stock
Sale - Save 6% $ 15.99

This product was last offered at the strikethrough price on
05-10-2026

$ 14.99 USD
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Sale - Save 6%
$ 15.99

This product was last offered at the strikethrough price on
05-10-2026

$ 14.99 USD
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Straighten bent fins in heat exchangers like radiators, condensers, and intercoolers obstruct air flow and reduce heat transfer. Paper-thin fins are easily bent, even by slight pressure.

1/2"/12mm Band Hose Clamp - 25-40mm - Priced Each
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:385425
Part#: 003402ECS05A-06
In Stock
Sale - Save 25% $ 4.99

This product was last offered at the strikethrough price on
06-13-2026

$ 3.74 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 4.99

This product was last offered at the strikethrough price on
06-13-2026

$ 3.74 USD
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Upgrade Your BMW Maintenance with Stainless Steel Hose Clamps from ECS Tuning

ECS Tuning introduces premium full stainless steel hose clamps, offering superior quality and convenience for your BMW maintenance. Avoid dealership delays and overpricing by choosing from a selection of band widths, ensuring you receive top-quality hose clamps without overpaying.

Key Benefits:

  • Premium full stainless steel hose clamps
  • Various band widths for enhanced convenience
  • High-quality alternative to dealership pricing
  • Readily available stock eliminates waiting time
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60-80mm 1/2"/12mm Band Hose Clamp
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:377836
Part#: 003402ECS05A-10
In Stock
Sale - Save 25% $ 6.99

This product was last offered at the strikethrough price on
06-13-2026

$ 5.24 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 6.99

This product was last offered at the strikethrough price on
06-13-2026

$ 5.24 USD
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ECS Tuning Stainless Steel Hose Clamps for BMW

Upgrade your BMW's hose clamps with ECS Tuning Stainless Steel Hose Clamps, designed for convenience and durability. Say goodbye to long waits and overpriced dealership clamps. With various band widths available, these stainless steel clamps ensure a secure fit for your vehicle's hoses.

Benefits:

  • Convenient replacement for worn-out hose clamps
  • Made of durable stainless steel for long-lasting performance
  • Available in various band widths for versatile use
  • Affordable alternative to dealership pricing
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Rein - Corporate Logo
T#:19431
Part#: 17121712736
In Stock
$ 13.99

This product was last offered at the strikethrough price on
10-25-2026

$ 12.99 USD
Limited Qty Sale
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$ 13.99

This product was last offered at the strikethrough price on
10-25-2026

$ 12.99 USD
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VENT HOSE 17121712736 Manufactured by CRP

Spal - Corporate Logo
T#:598797
Part#: 30102029
In Stock
$ 207.99 USD
Free Shipping
$ 207.99 USD
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1328 CFM. High performance puller fan with curved blades. This is a universal fan for applications that require more air flow or for engine compartments that have tight tolerances such as an aftermarket turbo set up that needs more clearance. This fan is universal and you must make it fit your application. It is not a direct bolt on. Made in Italy. Size: 13.25in x 12.5in x 3.5n Airflow (CFM): 1328
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Coolant Level Sensor - 109mm Long
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:380458
Part#: 61311375715
Ships in 2 Business Days
$ 15.99 USD
Free Shipping on orders $49 and up
Replace your coolant level sensor and ensure that your levels are accurately monitored
Radiator Hose - Lower
From production date 09/1982
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:373014
Part#: 11531289859
Ships in 2 Business Days
$ 15.99 USD
Free Shipping on orders $49 and up
$ 15.99 USD
Free Shipping on orders $49 and up
Replace your radiator hose before a blown hose leaves you stranded.
ATD Tools - Corporate Logo
T#:3629267
Part#: ATD3300
Ships in 6 Business Days
$ 497.99 USD
Free Shipping
$ 497.99 USD
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Adapters for most European and domestic vehicles

Rubber Grommet
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:591950
Part#: 17111117442
Ships in 2 Business Days
$ 11.99 USD
Free Shipping on orders $49 and up
For mounting of radiator and oil cooler

CSF Universal Large Single-Pass Oil Cooler - Universal Application ...
2X Entries Into Our F80 M3 Sweepstakes
Universal fitment design - modifications may be necessary to run this cooler
CSF - Corporate Logo
T#:53608839
Part#: 8371
Ships in 4 Business Days
New Item
$ 499.00 USD
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$ 499.00 USD
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CSF redesigned this cooler and went with a more traditional inlet/outlet orientation. The new single pass design features high efficiency and high durability, but with vertically oriented inlet and outlet connections.
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Febi Freeze Plug - 11111714712
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:6570
Part#: 11111714712
In Stock
$ 3.99

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

$ 2.03 USD
Free Shipping on orders $49 and up
$ 2.03 USD
Free Shipping on orders $49 and up
ENGINE COVER LID 11111714712

Rein - Corporate Logo
T#:7395
Part#: 17111100848
Back Ordered
$ 11.99 USD
Free Shipping on orders $49 and up
Rein radiator cap for classic BMW cooling systems, sized to hold system pressure and raise the coolant boiling point. Its job is to keep coolant under enough pressure to resist boiling and expansion, which helps prevent overheating. Replace the cap whenever major coolant system service is performed. Fitment covers the E3, E9, E10, E12, E21, E23, E24 and E28 chassis as listed.
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Rein - Corporate Logo
T#:38161716
Part#: 92810625703
In Stock
$ 11.99 USD
Free Shipping on orders $49 and up
Rein Automotive OE Quality caps are designed to be direct replacements for OE caps. Rein caps are designed to match or exceed the OE materials used and are produced to the highest standards to ensure long service life. Rein Automotive OE quality caps keep the coolant system at the proper pressure, just like the OE cap.
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Mishimoto - Corporate Logo
T#:378434
Part#: MMFAN10
In Stock at Vendor
$ 88.99 USD
Free Shipping
$ 88.99 USD
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WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.
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URO Coolant Level Sensor - BMW E24 E30
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:37757292
Part#: 61311361248
Ships in 2 Business Days
$ 12.99 USD
Free Shipping on orders $49 and up

URO Coolant Level Sensor - BMW E24 E30

URO Coolant Level Sensor - BMW E24 E30 is the perfect solution for restoring accurate coolant level monitoring in your BMW. If you are experiencing a false "low coolant" warning or if your vehicle fails to notify you of dangerously low coolant levels, this high-quality replacement sensor will fix those issues. Designed as a direct-fit OE replacement, this sensor installs easily into your coolant reservoir tank with a simple plug-and-play wiring connection. Made from durable polymer and corrosion-resistant metal materials, this sensor is built to withstand the intense heat of your vehicle’s cooling system. Alloy conductors help minimize electrical resistance for accurate operation and long-lasting reliability.

  • Resolves false "low coolant" indicator light warnings
  • Prevents failure to alert the driver of dangerously low coolant levels
  • Direct-fit OE replacement design for easy installation into the coolant reservoir tank
  • Simple plug-and-play wiring connection for quick installation
  • Manufactured from high-quality polymer and corrosion-resistant metal materials to endure high cooling system temperatures
  • Alloy conductors reduce electrical resistance for precise operation
  • Designed and tested for long-lasting reliability
  • 24 Month Unlimited Mileage Warranty for peace of mind
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URO - Corporate Logo
T#:37757224
Part#: 13621284397
Ships in 2 Business Days
$ 7.99 USD
Free Shipping on orders $49 and up
This sensor functions as an oil temperature sensor in air-cooled cars and a coolant temperature sensor in water-cooled cars.
Coolant Hose
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:373138
Part#: 11531266459
Ships in 2 Business Days
$ 3.99 USD
Free Shipping on orders $49 and up
Water pump to thermostat housing


Cooling Hose
From production date 09/1981
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:373141
Part#: 11531274210
Ships in 2 Business Days
$ 9.99 USD
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$ 9.99 USD
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Located under intake manifold
Graf - Corporate Logo
T#:583852
Part#: 11511707415
Ships in 1 Business Day
$ 55.99

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

$ 53.99 USD
Free Shipping on orders $49 and up
$ 53.99 USD
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Replacement Equivalent to OE
Spal - Corporate Logo
T#:598825
Part#: 30130074
In Stock at Vendor
$ 17.99 USD
Free Shipping on orders $49 and up
Provides .25" stand off from radiator, does not work with high output fans.

Spal - Corporate Logo
T#:598910
Part#: 30130013
In Stock
$ 6.99 USD
Free Shipping on orders $49 and up
Wire pin used to mount electric fan directly to radiator.

Genuine BMW - Corporate Logo
T#:214384
Part#: 11519070756
Ships in 7 Business Days
6% off MSRP $ 279.99

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

$ 263.99 USD
Free Shipping
6% off MSRP
$ 279.99

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

$ 263.99 USD
Free Shipping
Genuine BMW Rmfd Water Pump - 11519070756

This item fits the following BMW ENGINES:
M30

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 4 Business Days
$ 9.17 USD
Free Shipping on orders $49 and up
Water pump to thermostat housing

Hose Clamp 2 5/16" - 3 1/4" - priced each
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:376806
Part#: 54155K23
Ships in 1-2 days
$ 4.99 USD
Free Shipping on orders $49 and up

Hose Clamp 2 5/16" - 3 1/4"

Ensure secure hose connections with the Hose Clamp 2 5/16" - 3 1/4", a versatile and reliable solution for various applications. Crafted from durable materials, this clamp offers superior strength and corrosion resistance. Its adjustable design allows for a snug fit, reducing the risk of leaks and ensuring optimal performance. Upgrade your hose connections with the precision and reliability of the Hose Clamp 2 5/16" - 3 1/4".

  • Versatile and reliable solution for various applications
  • Superior strength and corrosion resistance
  • Adjustable design for a snug fit
  • Reduces risk of leaks for optimal performance
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Genuine BMW - Corporate Logo
T#:46094
Part#: 17119055593
Ships in 4 Business Days
6% off MSRP $ 15.99

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

$ 14.99 USD
Free Shipping on orders $49 and up
6% off MSRP
$ 15.99

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

$ 14.99 USD
Free Shipping on orders $49 and up


Genuine BMW Connector - Service


Victor Reinz - Corporate Logo
T#:580584
Part#: C32348
In Stock
$ 3.99

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

$ 2.99 USD
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$ 2.99 USD
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Genuine BMW - Corporate Logo
T#:22303
Part#: 11521260459
Ships in 8 Business Days
3% off MSRP $ 401.99

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

$ 388.99 USD
Free Shipping
3% off MSRP
$ 401.99

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

$ 388.99 USD
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Genuine BMW FAN COUPLING
Fits BMW Engines including:
M30

Genuine BMW - Corporate Logo
T#:22310
Part#: 11531266476
Ships in 10 Business Days
$ 11.99 USD
Free Shipping on orders $49 and up
Genuine BMW HOSE.--

This item fits the following BMWs:
BMW 5 Series - 530i

--. Fits BMW Engines including:
M30

Genuine BMW - Corporate Logo
T#:407580
Part#: 11531271572
Ships in 3 Business Days
$ 11.99 USD
Free Shipping on orders $49 and up


CTA Tools - Corporate Logo
T#:641679
Part#: CTAA195
In Stock
$ 9.98 USD
Free Shipping on orders $49 and up
Tests all ethylene glycol solutions with radiator hot or cold
Genuine BMW - Corporate Logo
T#:19256
Part#: 11521712293
Ships in 7 Business Days
4% off MSRP $ 83.99

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

$ 80.99 USD
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4% off MSRP
$ 83.99

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

$ 80.99 USD
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Genuine BMW Fan 7 Blade - D=450mm

Fits BMW Engines including:
M30

Genuine BMW - Corporate Logo
T#:22345
Part#: 11611261204
Special Order: No Guaranteed ETA
$ 11.99 USD
Free Shipping on orders $49 and up
Genuine BMW HOSE.--

This item fits the following BMWs:
BMW 3 Series - 3.0si
BMW 5 Series - 530i
BMW 6 Series - 633csi

--. Fits BMW Engines including:
M30

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Genuine BMW - Corporate Logo
T#:22309
Part#: 11531266475
Special Order: No Guaranteed ETA
$ 21.99 USD
Free Shipping on orders $49 and up
Genuine BMW HOSE.--

This item fits the following BMWs:
BMW 5 Series - 530i

--. Fits BMW Engines including:
M30


2 Pin Connector
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:33412932
Part#: 61132359999
In Stock
Sale - Save 25% $ 10.99

This product was last offered at the strikethrough price on
06-14-2026

$ 8.24 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 10.99

This product was last offered at the strikethrough price on
06-14-2026

$ 8.24 USD
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Includes connector housing with terminals and seals. Commonly used for the coolant level sensor.

ECS Tuning replacement harness connectors include all necessary pins and wire seals for a complete harness repair. Whether you have a broken harness connector or need a complete wiring repair, we have the components you need.

Each connector includes an additional terminal in case one becomes lost or damaged during installation.

*OEM cross reference PN# 61132359999 - Commonly used for the coolant level sensor.

Please reference the original part number from the existing connector to confirm fitment, before ordering.

Suggested tools:

Suggested crimping pliers: T#387193
Wire De-pin tools:
12pc De-Pin Tool Set - T#386379
23pc De-Pin Tool Set - T#641943

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Mahle Thermostat - 80�C - E12, E23, E24, E28
For vehicles with production date up to 09/1985
Mahle - Corporate Logo
T#:591826
Part#: 11539055588
Back Ordered
$ 28.99 USD
Free Shipping on orders $49 and up
$ 28.99 USD
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Stop your overheating problem.

Rein - Corporate Logo
T#:34114243
Part#: 11531710953
In Stock
$ 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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