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BMW Cooling System Parts & Accessories for BMW 1 Series E82 (2008-2013)

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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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Water Pump And Thermostat Kit - BMW N52 3.0L

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T#:17073598

Part#: 11537549476KT

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Includes everything you may need to replace your water pump and thermostat.

BMW N54 N55 S55 Mosselman Thermostat Installation Kit

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T#:4799665

Part#: THERMINSTALLKT

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$ 21.64 USD

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BMW N54 N55 S55 Mosselman Thermostat Installation Kit is designed to ensure a seamless installation of the Mosselman thermostat on BMW engines. This comprehensive kit from Turner Motorsport includes all necessary gaskets and components, guaranteeing a reliable and precise installation for optimal engine performance.

Complete Kit: Includes all essential gaskets and components required for a hassle-free thermostat installation.
Optimal Performance: Ensures proper installation of the Mosselman thermostat, leading to improved engine cooling efficiency and performance.
High-Quality Components: Gaskets and parts are manufactured to meet high standards of durability and reliability.
Precision Fit: Engineered to match OEM specifications, providing a perfect fit and reliable performance.
Ease of Installation: All necessary parts are included, simplifying the installation process and reducing the need for additional purchases.

Upgrade your BMW's cooling system with the Mosselman Thermostat Installation Kit from Turner Motorsport, ensuring a top-quality, reliable setup for your engine.

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Performance Water Pump And Thermostat Kit

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T#:15710799

Part#: 11517632426-KT

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$ 410.34 USD

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The stock thermostat is designed to open at 97C. This leaves your engine running fairly hot, and running for quite awhile before your thermostat will begin operation. With the Mishimoto Racing thermostat, the activation temperature becomes 74C. That's 23C cooler, meaning you can rest easy knowing your engine will stay cooler to help avoid all the problems that can be associated with an engine running hot. The water pumps in these BMW models are known for failure near 80,000 miles is a very common issue often times leaving the owner stranded. This kit provides a single stop for water pump and thermostat replacement needs to save the search and get you back on the road. Mishimoto Racing thermostat Bavarian Autosport water pump Genuine BMW coolant Mounting hardware required for both the thermostat and water pump

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Ultimate Water Pump And Thermostat Kit

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T#:15677548

Part#: 07119905400-KT

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$ 613.57 USD

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New water pump with replacement screws New thermostat ECS billet thermostat hose adapter (a great replacement for the stock, crack-prone plastic part!) ECS silicone coolant outlet hose ECS aluminized silicone water pump hose (aluminized for heat resistance to stay cool!) ECS Heavy Duty aluminum coolant bleed screw (replace the strip-prone plastic screw!) New hose clamps 1 gallon of Genuine BMW coolant (just add distilled water at your desired ratio) Red Line Water Wetter (trust us, this stuff works - we've been running it for years!)

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Water Pump And Thermostat Kit

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T#:15511872

Part#: 821414677040KT

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$ 504.01 USD

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The water pumps in these BMW models are known for failure near 80,000 miles is a very common issue often times leaving the owner stranded. The aftermarket kit offered provides a single stop for water pump and thermostat replacement needs to save the search and get you back on the road. Kit includes: Mahle-Behr thermostat Water pump Genuine BMW coolant Mounting hardware required for both the thermostat and water pump

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Expansion Tank Replacement Kit

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T#:15744017

Part#: N524ECSTNKKT-KT

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$ 100.95 USD

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The coolant expansion tank in your vehicle gives additional fluid a place to go after expansion and contraction from temperature change. Because it is subjected to such drastic changes on a regular basis, it can often crack or break. You want to keep all the coolant in your vehicle in the cooling system. If your tank has experienced damage such as cracking, nipples breaking off, or mounting point damage, you will need to replace it. The kit includes: Expansion tank with level sensor URO expansion tank cap Genuine BMW expansion tank grommet Genuine BMW mounting bolts

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N54 Cooling System Upgrade Kit

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T#:26771748

Part#: 024797ECS03KT2

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$ 523.17 USD

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The N54 engine, like many BMW engines, has a reputation for encountering cooling system issues. To address this, Turner Motorsport enthusiasts have curated a comprehensive kit to safeguard your N54 cooling system against potential failures.

Included in the kit:

1. Turner Motorsport Heavy Duty Aluminum Expansion Tank Kit:

Enhances the factory plastic tank design, known for its vulnerability to failure. Maintains original coolant capacity and expansion volume. Features a baffled tank design to prevent air pockets during aggressive driving. Includes a specially designed bleed passage to avoid air introduction during engine cooldown. Constructed with fully-TIG welded 5052 aluminum. Comes with aluminum bleeder screw, OE coolant level sensor, expansion tank cap, flared coolant pressure release line, and all necessary installation hardware. 2. ECS Performance Coolant Outlet Hose Kit:

4-ply reinforced silicone outlet hose. Internal layer lined with Flourosilicone for exceptional chemical resistance. Equipped with billet 6061-T6 outlet adapter. 3. Redline Water-Wetter Coolant Additive - 12 oz:

Lowers coolant temperatures by up to 30*F. Compatible with various cooling system components including aluminum, cast iron, copper, brass, and bronze. For N54 owners seeking enhanced cooling system performance and longevity, especially those pushing significant power, this kit is indispensable.

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Thermostat Installation Kit with Thermostat - N54, N55, S55

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T#:55353595

Part#: OTN54.T85KT3

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$ 390.23 USD

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High oil temperatures are the ultimate enemy of your engine's longevity and performance. If you want to keep pushing your BMW to the limit you need to manage the heat.

Cooling System Refresh Kit - Level 2

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T#:15677500

Part#: 82141467704-KT

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As your mileage increases, so does wear and tear on your engine's cooling components. Cooling system components live a rough life, going through extreme temperature changes and being exposed to the elements. A cooling system failure can, and probably will leave you stranded. For automatic transmission (or DCT) vehicles only This kit includes: Thermostat with mounting hardware 1 gallon of BMW coolant Water pump with mounting hardware Primary cooling system hoses and radiator hose gasket, and bleeder screw Expansion tank with cap Accessory belt

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Cooling System Refresh Kit - Level 2 - E9x, E82, E88, Z4

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T#:42099868

Part#: 11537558523TKT

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$ 668.46 USD

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Keep your BMW running at the proper temperature and avoid costly engine repairs with the Cooling System Refresh Kit, the complete maintenance solution trusted by enthusiasts and professionals alike.

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Thermostat

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T#:15511826

Part#: 11537549476

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$ 69.99 USD

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Overheating your N52 or N54 engine can be detrimental to the longevity of your engine. We also recommend replacing your hardware 07119903851 x2

Schwaben Coolant Refill/Air Purge Tool

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T#:362940

Part#: 003466SCH01

Ships on Sep 30, 2026

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$ 87.99 USD

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When it comes to BMW's we all know the weak point is commonly in the cooling system, many models proving hard to bleed the air pockets out after the refresh. The coolant refill tool solves this problem, ensuring that you get an air pocket free fill. The entire task is as simple as draining the system like normal, reinstalling the drain plugs and hooking the tool up to your refill location. The reason this tool works so well is due to the venturi valve, it converts air pressure from the compressor to vacuum inside the cooling system, then with a twist of a valve sucks coolant right into the system using the vacuum pressure.

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Upper Radiator Hose - E9x E82 E89 With N52 Engine

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T#:7460

Part#: 17127531579

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This is the upper radiator hose that goes from the engine to the top of the radiator with either N51 or N52 enigne.

This item fits the following BMWs:
2008+ E82 BMW 128i
2006-2011 E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi - Sedan
2006-2012 E91 BMW 325xi 328i 328xi 328i xDrive - Wagon
2007-2013 E92 BMW 328i 328xi 328i xDrive - Coupe
2007-2013 E93 BMW 328i Convertible
2009+ Z4 BMW Z4 sDrive30i

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Rein Upper Radiator Hose - E82, E88, E90, E92, E93, Z4

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T#:340690

Part#: 17127540127

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$ 38.94 USD

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The hose that comes off of the top outlet on the radiator

Radiator Hose for N52 / N54 - Lower

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T#:388683

Part#: 17127564478

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$ 32.29 USD

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Replace split, hard, or bulging hoses

Expansion Tank Vent Hose

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T#:30729012

Part#: 17127618510

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Upper Radiator Hose

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T#:30729022

Part#: 17127540127

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$ 34.26 USD

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Rein Radiator Hose with Temerature Sensor Fitting - E82 E88 E90 E91 E...

Lower

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T#:583051

Part#: 17127531581

Ships in 6 Business Days

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$ 26.59 USD

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Radiator to Thermostat Housing

Lower Radiator Hose

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T#:30729018

Part#: 17127564480

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OEM Rein Expansion Tank Vent Hose - E82/8 E9X N52

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T#:402113

Part#: 17127618510

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Acts as a vent hose between the upper radiator hose and the expansion tank. Runs the length of the top of the radiator.

CRP Radiator Vent Hose - E82, E84, E88, E90, E92, E93

For vehicles with automatic or Double Clutch Transmission

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T#:1195859

Part#: 17127565094

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$ 33.24 USD

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Located on the top of the radiator

Heater Return Line

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T#:27572099

Part#: 17127548230

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$ 86.69 USD

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Thermostat

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T#:26538316

Part#: 11537601158

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$ 76.70 USD

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Radiator Pressure Tester Kit

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T#:391482

Part#: 014710SCH01A

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

$ 154.49 USD

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Are you refreshing your coolant system or having issues with coolant loss? An easy way to test your system for leaks and ensure you're able to maintain pressure without coolant loss is the Schwaben Cooling System Pressure Tester Kit.

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Schwaben Locking Hose Pinch-Off Pliers

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T#:379950

Part#: 009787SCH01A

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Schwaben Locking Hose Pinch-Off Pliers have adequate clamping force to effectively seal large or pressurized cooling system hoses. These pliers are ideal for clamping shut most hoses, ensuring reliability in your automotive tasks. With swivel jaws, they provide even clamping force, making them a versatile tool for various applications.

Adequate clamping force for large or pressurized hoses
Ideal for clamping shut most hoses
Swivel jaws ensure even clamping force
Versatile tool for automotive maintenance

WARNING: This product contains chemicals known to the state of California to cause cancer, birth defects, and/or reproductive harm. For more information, visit http://www.p65warnings.ca.gov.

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Rein Radiator Return Hose - E82, E88, E90, E91, E92, E93

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T#:20530

Part#: 64216951946

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$ 20.89 USD

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HOSE F RADIATOR AND ENGINE R 64216951946 Manufactured by CRP

Coolant return line

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T#:30729019

Part#: 17127548229

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N54 Coolant Outlet Hose - 11537541992

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T#:36981059

Part#: 11537541992

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This coolant outlet hose connects the cylinder head to the thermostat housing and is a critical component of the cooling system. For many N54 owners, the "Mickey Mouse" flange is a common failure point. This plastic connector is vulnerable to degradation from heat, exposure to chemicals, and wear over time.

If your outlet hose has failed or the cylinder head flange is leaking, it’s best to replace the entire assembly for a reliable and long-lasting repair.

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Radiator Hose

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T#:5649971

Part#: 64216951946

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$ 27.12 USD

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Connects from the top side of the radiator to the expansion tank. Often an overlooked maintenance part.

Radiator Hose - Lower

Lower

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T#:30729025

Part#: 17127531581

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Rein Lower Radiator Hose - E82, E88, E90, E92, E93

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T#:340665

Part#: 17127564480

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$ 48.44 USD

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The hose that attaches to the bottom of the radiator

Radiator Hose - Upper

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T#:38621422

Part#: 17127531579

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OEM Rein Low Temperature Cooling Module Coolant Hose - BMW E82/88 E9X...

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T#:17738369

Part#: 17127540020

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$ 38.79 USD

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Coolant hoses can become brittle over time, leading to cracks and leaks. Replace your coolant hose with this OEM Rein hose to prevent leaks and overheating.

Rein Lower Cooling Hose - E82, E88, E90, E91, E92, E93, Z4

For vehicles with automatic transmission only

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T#:402117

Part#: 17117524710

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$ 31.34 USD

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Connects to lower coolant pipe

OEM Rein Coolant Hose - BMW E82/88 E9X N54 N55 3.0L

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T#:592007

Part#: 17127548203

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$ 25.64 USD

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Low temperature cooling module hose.

Coolant Hose Assembly

For manual transmission models only

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T#:30729020

Part#: 17127548223

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$ 106.39 USD

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Low Temperature Thermostat - 97C

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T#:33612901

Part#: 11537601158-97C

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$ 76.70 USD

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Lower Cooling Hose - 17117524710

For vehicles with automatic transmission only

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T#:36913374

Part#: 17117524710

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$ 29.37 USD

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This hose connects to the lower coolant pipe on the passenger side of vehicles equipped with automatic transmissions.

Coolant Hose

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T#:30729015

Part#: 17127599450

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$ 40.79 USD

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Coolant Hose

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T#:594291

Part#: 11537584549

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$ 30.39 USD

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Connects to the thermostat. Replacement from Rein.

Rein Coolant Hose With Metal Flange - E82, E88, E9x - N55

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T#:53750144

Part#: CHU0629

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$ 53.93 USD

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Upgraded Coolant Hose from Rein Featuring Metal Flanges to Reduce Leaks

Coolant Expansion Tank Cap

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T#:36032339

Part#: 17117639020

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$ 11.99 USD

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Coolant Hose - Priced Each

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T#:30729023

Part#: 17127540020

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$ 18.50 USD

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Bremmen Parts O-Ring

Found at the flange end of the upper thermostat hose

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T#:399143

Part#: 11537545278

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Seals your cooling system

Coolant Inlet Pipe

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T#:36032354

Part#: 11537516414

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Schwaben Radiator/ Intercooler Fin Comb

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T#:384260

Part#: 015326SCH01A

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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.

N54 Coolant Hose/Elbow - 11537545665

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T#:36100140

Part#: 11537545665

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This Coolant Hose is located behind the thermostat on N54-equipped BMW models. Due to weak rubber construction and its close proximity to the bank one turbocharger, this hose is a common failure item on high-mileage vehicles.

Whether you are replacing a failed hose or preemptively servicing your cooling system, choose this high-quality replacement from Bremmen Parts for a lasting repair.

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Aluminum Screws for N52 N54 Water Pump

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T#:2253

Part#: 11510392553

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$ 6.77 USD

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These aluminum water pump screws are single use and must be replaced each time they are removed. These are used on all 325i, 328i, and 330i with the BMW N51 N52 and N53 engines. They were also used on some early N54 engines that have rubber mounts on the water pump housing. Do not use these bolts if your N54 water pump has been replaced with a housing that does not have the rubber mounts.

In German, Rein means Pure. In the automotive industry the Rein name has quickly come to represent quality. With fitments for some of the world’s finest automobiles including BMW and Mini and guaranteed OE quality, Rein is a name you can trust.

This item fits the following BMWs:
2008+ E82 BMW 128i 135i
2007+ E9X BMW 325i 325xi 328i 328xi 330i 335i 335xi
2006+ E60 BMW 525i 525xi 528i 528xi 530i 530xi 535i 535xi
2006+ X3 BMW X3 3.0i X3 3.0si
2006+ Z4 BMW Z4 3.0i Z4 3.0si

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Coolant Inlet Hose Section

For vehicles with automatic transmission only

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T#:388669

Part#: 11537558523

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$ 17.09 USD

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Rein Water Pipe - E82, E88, E90, E91, E92, E93

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T#:403979

Part#: 11537545890

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$ 19.94 USD

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Connects from the top of the thermostat housing to the engine block

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