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BMW Cooling System Parts & Accessories

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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Pierburg Full Aluminum Water Pump
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Pierburg - Corporate Logo
T#:6091438
Part#: 11515A05704
In Stock
$ 615.05

This product was last offered at the strikethrough price on
04-01-2026

$ 537.99 USD
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$ 537.99 USD
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N54 and N55 engines are prone to water pump failure - replace every 60,000 miles. If your water pump is starting to fail, you may notice coolant leaks, or even hear a whining noise coming from under the hood. If you think your water pump is starting to fail, replace it as soon as you can. The main downside to an electric water pump is you may also notice nothing - nothing but overheating! Keep your eyes peeled for warning signs it may be time to replace your water pump.
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OEM Pierburg Water Pump - 128i, 325i/328i/330i, 525i/528i/530i, X3, X...
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Pierburg - Corporate Logo
T#:348906
Part#: 11517586925
In Stock
$ 365.99 USD
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$ 365.99 USD
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Don't take your car's cooling system for granted. A waterpump failure can cost you an engine, which is why preventatively replacing your BMWs waterpump and refreshing the cooling system every 60,000 miles. The water pump is a weak point is the cooling system. Replacing your waterpump will go a long way for keeping your car on the road and operating properly. This water pump fits many 2006 and newer BMW 6 cylinder engines, specifically all the BMWs with the N51, N52, N53 engines. You will also need to purchase replacement aluminum screws Part #11510392553 

Pierburg pumps are some of the most trusted and widely used on the market. From fuel, water, air and vacuum Pierburg has you covered with OE quality and reliable performance year after year.

This water pump fits the following BMWs:
2008-20xx E82 128i
2006-2006 E90 325i sedan, 330i sedan, 325xi sedan, 330xi sedan
2007-2012 E90 328i sedan, 328xi sedan, 328i xDrive sedan
2007-2012 E92 328i coupe, 328xi coupe, 328i xDrive coupe
2007-2012 E93 328i Convertible
2006-2006 E60 525i, 525xi, 530i, 530xi
2007-2010 E60 528i, 528xi, 528i xDrive
2007-2010 E83 X3 3.0i X3 3.0si
2007-20xx E70 X5 3.0si X5 xDrive30i 
2006-2008 E85 Z4 3.0si
2009-20xx E89 Z4 sDrive30i

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Water Pump - With Mounting Hardware - E6X E8X E9X
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Pierburg - Corporate Logo
T#:341216
Part#: 11517586925KT1
In Stock
$ 373.99 USD
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$ 373.99 USD
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Ensure your BMW's optimal performance by replacing a failing water pump with this high-quality replacement. Detectable by symptoms like coolant leaks or whining noises from under the hood, a failing water pump can lead to overheating issues. Don't risk engine damage; keep an eye out for warning signs and promptly replace the water pump. This replacement kit includes one-time-use aluminum mounting bolts for a secure installation.

Product Benefits:

  • Prevents coolant leaks
  • Eliminates whining noises from the engine
  • Avoids overheating issues
  • Includes one-time-use aluminum mounting bolts for secure installation
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Water Pump - Pierburg
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Pierburg - Corporate Logo
T#:554817
Part#: 11518635090
In Stock
$ 910.99

This product was last offered at the strikethrough price on
02-01-2026

$ 579.99 USD
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$ 579.99 USD
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If your water pump is showing signs of wear and tear, it's crucial to act promptly. Avoid issues like coolant leaks or the dreaded whining noise under the hood by replacing it as soon as possible. The electric water pump, while efficient, may not always give clear signals – except for one: overheating!

  • Prevents coolant leaks
  • Eliminates whining noise
  • Efficient electric water pump
  • Timely replacement prevents overheating
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Pierburg Water Pump
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Pierburg - Corporate Logo
T#:363990
Part#: 11518635089
In Stock
$ 463.99 USD
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$ 463.99 USD
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New original equipment water pump to keep your cooling system in tip top shape
Auxiliary Water Pump
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Pierburg - Corporate Logo
T#:22064584
Part#: 17122284291
Ships on Nov 17, 2026
$ 512.99 USD
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Aluminum Thermostat Housing Kit - M50
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Active Autowerke - Corporate Logo
T#:397222
Part#: 14-009
In Stock
$ 56.99

This product was last offered at the strikethrough price on
06-18-2026

$ 52.99 USD
Limited Qty Sale
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$ 56.99

This product was last offered at the strikethrough price on
06-18-2026

$ 52.99 USD
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Plastic thermostat housing cracked on your M50?

Here are your choices: you can wait for the plastic factory thermostat housing cover to break and cause major overheating. (Even with a new stock cover, it won’t take long.) Or you can install a thoughtfully engineered all-aluminum thermostat housing cover from Active Autowerke and never experience this type of failure again. Currently there is no factory upgraded part to this problem. This is an aluminum extruded part that has all of the openings machine properly to fit like factory; from the mounting bolt holes, the seating of the thermostat to the sealing opening for the ORANGE gasket. Forged to exact factory tolerances, everything fits and this unit is a true easy bolt-on – especially suited for racing or load conditions like heavy traffic, where engine temp can rise rapidly. The housing is guaranteed never to break from overheating or over-tightening, and its CNC machined surface ensures a precise seat.

Unit comes complete with a new ORANGE sealing gasket; a new thermostat is recommended but not included.
For hotter climates, a 71 degree thermostat is recommended over the 82 degree unit.

Anything and everything BMW is the mantra at Active Autowerke. Since 1981 they have been serving the BMW community with custom turbocharger kits to a myriad of other innovative and inspiring performance parts.
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OEM Pierburg Water Pump - BMW B46 2.0L
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Pierburg - Corporate Logo
T#:25142296
Part#: 11518638026
Ships on Jul 29, 2026
$ 149.00

This product was last offered at the strikethrough price on
01-28-2026

$ 146.99 USD
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$ 146.99 USD
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The water pump in your vehicle keeps all that coolant flowing freely. If it begins to fail, overheating problems are inevitable. Don't take a chance on doing damage to engine internals by not replacing your water pump. This has been a common problem amongst most German vehicles. Water Pump failure can lead to your vehicle making an unnecessary trip to the repair shop. If your pump stops working, coolant temperatures rise rapidly and can overheat the engine, leading to head gasket or even piston ring failure. This is a great preventative maintenance item when doing any type of timing belt replacement. This is a common replacement around 80,000-100,000 miles.
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Pierburg BMW Auxiliary Water Pump
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Pierburg - Corporate Logo
T#:22064596
Part#: 11517583965
In Stock
$ 221.99 USD
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$ 221.99 USD
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This is the high quality Pierburg electric water pump for F30 F32 F22 models with the N55 6 cylinder turbo engine. The electric water pumps on older N54 and N55 engines tended to be failure prone. The N55 water pump is electrically driven and varies output based on instructions from the engine computer. Under the best circumstances the pump drives only as much coolant as needed and will shut down or activate as load and performance demands change (combustion chamber temperatures are dynamically changed based on economy, normal, and performance demands). The pump can also run when the car is off to reduce heat soak in the engine and turbo(s). The water pump is now a factor in how much power and fuel economy your car is producing, making it all the more critical to replace during normal maintenance. If a fault or excessive temperature is reached, the dash cluster will display a yellow or red water temp icon depending on the severity of the condition. The car's electronics will begin shutting down various systems in the car to divert more resources to the cooling system. This can include reducing power output and activating 'limp mode'. The best way to avoid problems and system failures? Preventative maintenance and overhaul of the cooling system, starting with the water pump (and thermostat). NOTE: ONLY for cars with M Sports Package - option code P337A This item fits the following BMWs: 2012+ F30 BMW 335i 335i xDrive - Sedan 2013+ F32 BMW 435i 435i xDrive - Coupe 2013+ F33 BMW 435i Convertible 435i xDrive Convertible- Convertible 2014+ F34 BMW 335i xDrive GT - Gran Tourismo 2014+ F36 BMW 435i Gran Coupe 435i xDrive Gran Coupe
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Active Autowerke Sport Fan Clutch - E36 E46
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Active Autowerke - Corporate Logo
T#:397219
Part#: 14-010
Ships in 2 Business Days
5% off MSRP $ 259.00

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

$ 246.99 USD
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5% off MSRP
$ 259.00

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

$ 246.99 USD
Free Shipping

When you push your powerplant, thermodynamics push right back. The toll of high performance is higher heat load – and many stock components begin to complain. But Active Autowerke has you covered - this upgraded fan clutch increases viscous coupling of cooling fan blade speed to water pump speed, yielding increased airflow through the radiator for more efficient cooling. A simple, yet wonderful, thing.

This product fits the following BMWs:
1992-1999 E36 323i 325i 328i 330i M3
1998-2006 E46 323i 325i 328i 330i M3

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OEM Pierburg Auxillary Water Pump - BMW N63 S63
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Pierburg - Corporate Logo
T#:22064607
Part#: 11515A36581
In Stock
$ 80.99 USD
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Aux electric water pump for the turbo cooling circuit.
Water Pump
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Pierburg - Corporate Logo
T#:22064599
Part#: 11517524551
In Stock
$ 107.99

This product was last offered at the strikethrough price on
03-30-2026

$ 77.99 USD
Limited Qty Sale
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$ 107.99

This product was last offered at the strikethrough price on
03-30-2026

$ 77.99 USD
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This water pump includes the gasket (11517508535) and is a direct replacement for your stock pump. This is a water pump. The thermostat is also located in the water pump housing so you may also want to consider replacing that at the same time. This item fits the following BMWs: 2004-2005 E60 BMW 545i 2004-2005 E63 BMW 645ci 5/2002-2005 E65 BMW 745i 745li 2004-2006 E53 BMW X5 4.4i X5 4.8is
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Pierburg Water Pump - BMW F30 320i N20 2.0L
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Pierburg - Corporate Logo
T#:639136
Part#: 11517597715
In Stock at Vendor
$ 981.99

This product was last offered at the strikethrough price on
03-23-2026

$ 812.99 USD
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$ 812.99 USD
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BMW F30 Water Pump plays a crucial role in the vehicle's cooling system, directly impacting performance and fuel efficiency. Designed to manage engine cooling, this water pump also supports turbo and transmission cooling, making it an essential component of the engine. BMW has engineered this smart electric water pump with increased output to meet the high cooling demands of the N20/N26 engines, which face additional stress due to the factory intercooler, tight engine bay, and heat from the turbochargers.

  • Enhanced Cooling Performance: Ensures effective cooling of the engine, turbo, and transmission.
  • Smart Electric Design: Features a dynamic electric pump with increased output compared to normally aspirated models.
  • Engine Efficiency: Balances engine power output and cooling responsibilities for optimal performance.
  • Fits Multiple Models: Compatible with 2012+ BMW F30 320i

This water pump is a critical upgrade for maintaining engine health and performance.

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Pierburg Auxiliary Water Pump - E65, E66
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Pierburg - Corporate Logo
T#:379284
Part#: 64116922699
Ships in 1 day
$ 130.27 USD
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$ 130.27 USD
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Improves coolant flow allowing hot air to blow while the engine is off
Pierburg Electric Water Pump - BMW F10 F25 N52 3.0L
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Pierburg - Corporate Logo
T#:583982
Part#: 11518635092
Ships in 4 Business Days
$ 567.96 USD
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$ 567.96 USD
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This water pump is designed to provide reliable and efficient cooling for your BMW's engine. This high-quality electric coolant pump is specifically engineered for the F10 and F25 models, ensuring optimal performance and longevity. As a genuine OEM part, it guarantees perfect compatibility with your BMW, offering seamless integration and superior functionality. Key Benefits: OEM part ensures precise fit and reliable performance. Enhances engine cooling efficiency, preventing overheating. Specifically designed for BMW F10 and F25 models. Manufactured with high-quality materials for durability and longevity. Easy installation for a hassle-free replacement process.
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Active Autowerke Thermostat Bypass/Delete Tube - S65
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Active Autowerke - Corporate Logo
T#:2302749
Part#: 14-016
Ships in 10 Business Days
$ 141.99 USD
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$ 141.99 USD
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CNC machined coolant/water thermostat bypass tube to improve flow on and off the track. Easy plug and play installation and a durable anodized coating make this a simple and reliable temperature control solution.
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Active Autowerke Cnc Aftercooler Cooling Kit - F8x S55
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Active Autowerke - Corporate Logo
T#:5886968
Part#: 15-012
Ships in 3 Business Days
$ 2,849.99 USD
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$ 2,849.99 USD
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BMW's S55 motor is a modern marvel but one weak point, which Active identified is the entire cooling system for the intake which comprises the charge pipe, the aftercooler and the heat exchanger (or radiator). Finally there is a S55 aftercooler kit upgrade that is good enough to carry the Active Autowerke brand. Years of success in developing cars for motorsport has allowed Active to leverage its expertise to the top-mount charge air cooler on the F80 M3, F82 M4 and F87 M2 Competition. This aftercooler was made for the S55 and crafted using only high-grade aluminum to outperform the factory aftercooler in all situations from everyday driving to the toughest racing. The factory cooler was built to support a specific power target and environment. Many of you have increased the performance of the S55 which quickly overwhelms the stock cooler leading to heat soak and higher intake air temperatures which triggers the ECU to downgrade the performance until cooler air returns. Active's focus was not on a mass-market aesthetic add-on but a properly engineered improvement over the existing hardware. Active uses a tube-and-fin core designed specifically for the S55 and included turbulators to maximize the cooling efficiency in as small a package as possible. The end tanks are billet machined aluminum, not cast, folded, or bonded and ensure even distribution of the water throughout the internal aftercooler cores. High precision fittings, CNC machining, and TIG welding throughout ensures the highest quality construction to prevent pressure loss, and the lowest weight, in a bolt-on replacement. But Active also didn’t leave the aesthetics by the wayside as we dip the visible top of the aftercooler in a carbon fiber coating giving your installed cooling system a decidedly top market look to match the improved cooling performance. The Active silicone charge pipes for the F80 M3, F82/F83 M4 and the F87 M2 Competition improve the flow over the stock, compressed plastic pipes. The Active Silicone Charge Pipes allow you to maximize power on your F8X by securing all the boost that your S55 is making. These pipes replace the hot-side pipes leaving the turbos and into the top-mount aftercooler. The stock S55 charge pipes are notorious for developing hairline fractures at their plastic seams. These fractures or cracks are unnoticeable to the naked eye, but under boost pressure they open up leaking the desired charged air into the engine bay, and consequently can rob your S55 of it's full power potential. In addition, these leaks can trigger your S55's turbochargers to work harder to hit and maintain target boost pressure, potentially wearing them out sooner. Active uses silicone in this area because it will not contribute to heat soak and it's easier to mold for the correct clearances. Active uses a 5-layer silicone hose with all needed adapters and stainless hose clamps included. It fits perfectly with our CNC’d top-mount cooler.
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OE Pierburg Auxiliary Water Pump - E70,E71,F15,F16
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Pierburg - Corporate Logo
T#:639135
Part#: 64119230233
Ships on Jul 27, 2026
$ 184.99 USD
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Genuine BMW Auxiliary Water Pump This item fits the following BMW Chassis: E70 X5M,E71 X6M,E70 X5,E71 X6,F15,F16

Coolant Pump With Thermostat And Support 7.10942.20.0
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Pierburg - Corporate Logo
T#:33412916
Part#: 11518601366
Special Order: No Guaranteed ETA
$ 254.99 USD
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Auxiliary Water Pump
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Pierburg - Corporate Logo
T#:380532
Part#: 11517566335
Special Order: No Guaranteed ETA
$ 247.99 USD
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$ 247.99 USD
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Water Pump
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Pierburg - Corporate Logo
T#:22064631
Part#: 11519894484
Special Order: No Guaranteed ETA
$ 617.99 USD
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Don't take your car's cooling system for granted. A water pump failure can cost you an engine, which is why preventatively replacing your BMWs water pump and refreshing the cooling system every 60,000 miles. The water pump is a weak point is the cooling system. Replacing your water pump will go a long way for keeping your car on the road and operating properly. This water pump specifically fits E70 X5 3.0si models with adaptive drive or auto climate control with 4 zone control. You will also need to purchase replacement aluminum screws.
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Auxiliary Water Pump - BMW E70 F15 xDrive 35d
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Pierburg - Corporate Logo
T#:25109083
Part#: 64119197085
Special Order: No Guaranteed ETA
$ 149.99 USD
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Replace your failed water pump with a brand new pump from Pierburg.
Auxiliary Water Pump
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Pierburg - Corporate Logo
T#:22064619
Part#: 11517584088
Special Order: No Guaranteed ETA
$ 245.99 USD
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Auxiliary Water Pump - This item fits the following BMW Chassis: F06,F10,F12,F13 Fits BMW Engines including: S63N
Turbocharger Auxiliary Water Pump - BMW E70 X5M, E71 X6M S63 4.4L ...
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Pierburg - Corporate Logo
T#:25109080
Part#: 11517629917
Special Order: No Guaranteed ETA
$ 104.99 USD
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This auxiliary water pump provides coolant to your turbochargers to prevent them from overheating. Failure of this pump could result in damage to your turbos if not addressed immediately.