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BMW Cooling System Parts & Accessories for BMW 6 Series F06 (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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BMW N54 N55 S55 Mosselman Thermostat Installation Kit

10X Entries Into Our F80 M3 Sweepstakes

T#:4799665

Part#: THERMINSTALLKT

In Stock

Sale - Save 6% $ 22.99

This product was last offered at the strikethrough price on
06-15-2026

$ 21.64 USD

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Sale - Save 6%

$ 22.99

This product was last offered at the strikethrough price on
06-15-2026

$ 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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Thermostat Replacement Kit - F01, F06, F07, F10, F12, F13

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T#:41289768

Part#: 115376011591TKT

Ships on Sep 21, 2026

$ 179.99

This product was last offered at the strikethrough price on
09-09-2026

$ 178.99 USD

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$ 178.99 USD

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Everything you need to replace your thermostat with a high quality aftermarket unit on your F chassis BMW!

OEM Style Hose Clamps

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T#:338927

Part#: HOSE-CLAMPS

In Stock

Sale - Save 3% $ 3.99

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

Starting at $ 3.87 USD

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Sale - Save 3%

$ 3.99

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

Starting at $ 3.87 USD

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Hose clamps for radiator hoses, coolant hoses, vacuum hoses, or intake hoses. These hose clamps are the same style as your OEM hoses with a smooth inside band to prevent cutting into the hose material.

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Thermostat Installation Kit with Thermostat - N54, N55, S55

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T#:55353595

Part#: OTN54.T85KT3

In Stock

$ 390.23 USD

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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.

Water Pump And Thermostat Kit

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T#:15777309

Part#: 115176324260-KT

Back Ordered

$ 867.99 USD

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$ 867.99 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 OEM 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: OEM thermostat OEM water pump Genuine BMW coolant Mounting hardware

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Race German Coolant Temperature Sender Adapter - M12x1.5

T#:6827887

Part#: RGCTSAM12

In Stock

$ 35.99 USD

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$ 35.99 USD

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Race German has devoted themselves to providing quality products for late model BMWs that cover both street and track applications. Race German has now grown their catalog to a wide variety of models and products geared towards keeping your car looking and running nice. For those looking to install an aftermarket coolant temp gauge, Race German has the perfect accessory for you! This adapter is machined out of aluminum and splices into your upper radiator hose. Perfect for use with Race German's E30 temperature gauge but has compatibility with a wire variety of other cars as well! Features: Tapped for M12x1.5 sized sensor 38mm diameter outlets which fit most BMW hoses Includes 2x hose clamps **Does not include temp sensor

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Race German Coolant Temperature Sender Adapter - 1/8NPT

T#:6827888

Part#: RGCTSA1/8NPT

In Stock

$ 35.99 USD

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$ 35.99 USD

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Race German has devoted themselves to providing quality products for late model BMWs that cover both street and track applications. Race German has now grown their catalog to a wide variety of models and products geared towards keeping your car looking and running nice. For those looking to install an aftermarket coolant temp gauge, Race German has the perfect accessory for you! This adapter is machined out of aluminum and splices into your upper radiator hose. Perfect for use with Race German's E30 temperature gauge but has compatibility with a wire variety of other cars as well! Features: Tapped for 1/8NPT sized sensor 38mm diameter outlets which fit most BMW hoses Includes 2x hose clamps **Does not include temp sensor

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Red Line SuperCool Performance Coolant - Pre-Mixed - 1 Gallon ...

T#:640436

Part#: 81215

In Stock

$ 54.99 USD

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$ 54.99 USD

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Red Line SuperCool Performance Coolant fortified with WaterWetter is a 50/50 prediluted antifreeze/coolant designed to maximize the performance of your cooling system with superior protection against cavitation corrosion/erosion. Using 100% SuperCool Performance protects the entire cooling system, keeping new components like new for 5 years/150,000 miles and prevents further damage to older components. Red Line’s proprietary coolant additive formula enhances the fluid’s ability to transfer heat, reducing operating temperatures by up to 20*F and prolonging the life of the entire cooling system. Red Line's SuperCool is an OAT coolant that is a Nitrate and Silicate Free product with its own proprietary corrosion technology to offer superior protection for aluminum engines found in all European vehicles, performance vehicles, as well as other applications. SuperCool will not void the factory warranty either. It can be used to top off the existing coolant of any BMW and will not cause any ill-effects on the cooling system because it is silicate and nitrate free. It is still better to flush it out and switch completely to SuperCool to get all the full benefits of the product in performance and protection.

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Rein Turbocharger Coolant Return Line - BMW F10 F06/12/13 S63 4.4L En...

2X Entries Into Our F80 M3 Sweepstakes

T#:39059269

Part#: 11538092641

In Stock

$ 71.99 USD

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$ 71.99 USD

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Replace your leaking turbo coolant line to prevent further leaks, coolant loss, and overheating.

AutoTecknic Dry Carbon Charge Cooler Tank Cap Cover - Gloss Finish ...

T#:39971051

Part#: BM-0032

In Stock

$ 64.99

This product was last offered at the strikethrough price on
09-16-2026

$ 57.99 USD

Limited Qty Sale

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$ 64.99

This product was last offered at the strikethrough price on
09-16-2026

$ 57.99 USD

Limited Qty Sale

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A premium dry carbon fiber engine bay upgrade that enhances the performance styling of compatible BMW models with a sleek, UV-resistant finish and easy OEM-style installation.

Rein Water Hose With Gasket - Water Pump To Engine Inlet

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T#:17804808

Part#: 11537584630R

Ships in 1 Business Day

$ 40.99 USD

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$ 40.99 USD

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Rein OE quality water hoses are designed to be direct replacements for OE hoses and assemblies. This includes the hose and clamps.

OEM Rein Lower Coolant Hose - N63 4.4L

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T#:554681

Part#: 17127575427

In Stock at Vendor

$ 51.99 USD

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$ 51.99 USD

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Replace your cracked or leaking radiator hose to prevent further leaks and potentially catastrophic failure.

Fits the following engines:
N63 4.4L

OEM Rein Vent Hose - N63 4.4L

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T#:554680

Part#: 17127576363

Ships in 1 Business Day

$ 26.99 USD

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$ 26.99 USD

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Replace your cracked or leaking radiator hose to prevent further leaks and potentially catastrophic failure.

Fits the following engines:
N63 4.4L

Rein Coolant Hose - Lower - F01, F02, F06, F07, F10, F12

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T#:592014

Part#: 17127600836

In Stock

$ 47.99 USD

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$ 47.99 USD

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Lower radiator hose connected to secondary radiator

Coolant Hose - Priced Each

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T#:594295

Part#: 11537580969

In Stock

$ 25.91

This product was last offered at the strikethrough price on
07-17-2026

$ 20.99 USD

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$ 20.99 USD

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Comes off the coolant pump. Replacement from Rein.

COOLANT HOSE

2X Entries Into Our F80 M3 Sweepstakes

T#:591352

Part#: 17127592651

In Stock at Vendor

$ 29.99 USD

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$ 29.99 USD

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Rein BMW Coolant Hose -
This item fits the following BMW Chassis:
F06,F10,F12,F13

Fits BMW Engines including:
N52N,N63,N63N

Radiator Hose - Metal Flange

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T#:4826911

Part#: 17127619702

Ships in 1 Business Day

$ 36.99 USD

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$ 36.99 USD

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Cylinder Head Coolant Hose to keep your motor healthy for many miles ahead. Replace damaged or worn coolant hose with upgraded metal flange from Rein.

Rein - Return Hose

2X Entries Into Our F80 M3 Sweepstakes

T#:17771593

Part#: 11537615492

Ships in 1 Business Day

$ 45.99 USD

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$ 45.99 USD

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Replace leaking or faulty hoses with Rein premium hoses to restore your vehicle to safe and optimal performance levels.

AutoTecknic Dry Carbon Coolant Expansion Tank Cap Cover - Gloss Carbo...

T#:39497984

Part#: BM-0803-GC

Ships in 7 Business Days

$ 74.99 USD

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$ 74.99 USD

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Turner Motorsport offers the AutoTecknic Dry Carbon Coolant Expansion Tank Cap Cover - Gloss Carbon as the perfect addition for BMW owners looking to elevate their engine bay’s appearance with premium materials and precision engineering.

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MMX 90mm Billet Coolant Expansion Tank Cap | BMW

T#:29002094

Part#: MMR03-1502

Ships in 2 Business Days

$ 127.99 USD

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$ 127.99 USD

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The MMX Performance 90mm billet coolant expansion cap for BMWs has been designed from the ground up in the UK, from a solid piece of billet aluminum. Each cap was designed to directly replace the OE cap, not merely stuck in place. Fitment is for models with the matching OE (17 11 7 639 021) part number.

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Red Line Water Wetter Heat Transfer Agent

T#:3607

Part#: 1-WW-12Z

In Stock

$ 15.99 USD

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$ 15.99 USD

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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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Red Line Water Wetter Coolant Additive

T#:394769

Part#: REDLINE5A

In Stock

Starting at $ 15.99 USD

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Starting at $ 15.99 USD

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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.

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BMW Radiator Hose Kit - 17127575427

2X Entries Into Our F80 M3 Sweepstakes

T#:46719185

Part#: CHK0583

Ships in 3 Business Days

$ 69.99 USD

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$ 69.99 USD

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Keep your cooling system sealed, strong, and ready for anything with this Rein radiator hose kit—your all-in-one fix for cracked, leaking, or worn factory hoses. Years of heat, pressure, and age can cause rubber to weaken, split, or swell, setting the stage for coolant leaks and potential overheating. Rein hoses are engineered to meet or exceed OEM standards, built from premium, heat-resistant materials that can take on extreme temperatures and system pressures without faltering. Each hose features factory-correct bends, fittings, and diameters for an exact, hassle-free installation—no cutting or forcing required. Whether you’re tackling a full cooling system refresh or chasing down a small coolant leak, this Rein kit provides everything needed to restore confidence and performance under the hood. Why choose this Rein radiator hose kit: Factory-level precision – Direct-fit replacements that deliver OEM-quality reliability. Built to last – Resists cracking, swelling, and chemical damage from daily heat cycling. Confidence restored – Prevents coolant loss, overheating, and on-road breakdowns. All-in-one upgrade – Includes upper and lower hoses for a complete system refresh. If keeping your BMW’s cooling system running tight and trouble-free is the goal, Rein brings the dependable quality and fitment you can count on—engineered to perform just like factory, mile after mile.

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Cooling Hose

2X Entries Into Our F80 M3 Sweepstakes

T#:594371

Part#: 17127582894

Ships in 3 Business Days

$ 56.99 USD

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$ 56.99 USD

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Replacement cooling hose from Rein

Rein Radiator Mount

2X Entries Into Our F80 M3 Sweepstakes

T#:17804812

Part#: 17117575248

Ships in 3 Business Days

$ 13.99 USD

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$ 13.99 USD

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Rein OE equivalent mounts are produced with high-quality materials to ensure maximum life and a smooth ride.

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