BMW Cooling System Parts & Accessories for BMW E12 530i M30 3.0L

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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 Rein Radiator Coolant Cap
2X Entries Into Our F80 M3 Sweepstakes
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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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
OEM Rein Radiator Cap - E21 E24 E10 E12 E23 E28
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:7395
Part#: 17111100848
In Stock at Vendor
$ 11.99 USD
Free Shipping on orders $49 and up
The radiator 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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Coolant Hose
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:373138
Part#: 11531266459
Back Ordered
$ 3.99 USD
Free Shipping on orders $49 and up
Water pump to thermostat housing

URO Engine Temperature Sensor
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:37757224
Part#: 13621284397
Ships in 1 Business Day
$ 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.
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 3 Business Days
$ 9.17 USD
Free Shipping on orders $49 and up
Water pump to thermostat housing
FAE - Corporate Logo
T#:10784
Part#: 62110788115
Ships in 1 day
$ 13.99 USD
Free Shipping on orders $49 and up
INSTRUMENTS ENGINE COOLANT TEMP SENSOR 62110788115

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 day
$ 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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FAE - Corporate Logo
T#:596552
Part#: 62111268355
Ships in 3 Business Days
$ 13.99 USD
Free Shipping on orders $49 and up
$ 13.99 USD
Free Shipping on orders $49 and up
Victor Reinz - Corporate Logo
T#:580584
Part#: C32348
Ships in 1-2 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
Free Shipping on orders $49 and up
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
Free Shipping
Genuine BMW FAN COUPLING
Fits BMW Engines including:
M30



Genuine BMW - Corporate Logo
T#:22310
Part#: 11531266476
Ships in 9 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

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#: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
Free Shipping on orders $49 and up

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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BMW Thermostat Gasket
2X Entries Into Our F80 M3 Sweepstakes
Elring - Corporate Logo
T#:15048409
Part#: 11531250357
Back Ordered
$ 4.99

This product was last offered at the strikethrough price on
05-08-2026

$ 3.99 USD
Free Shipping on orders $49 and up
$ 3.99 USD
Free Shipping on orders $49 and up
Whether you are just doing general maintenance or noticing some symptoms of a failing gasket, it's always a good idea to replace your gaskets anytime your engine components are removed. Get your replacement gasket here today!
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Mahle - Corporate Logo
T#:591826
Part#: 11539055588
Back Ordered
$ 28.99 USD
Free Shipping on orders $49 and up
$ 28.99 USD
Free Shipping on orders $49 and up
Stop your overheating problem.