BMW Cooling System Parts & Accessories for BMW 1 Series

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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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Red Line Supercool Performance Coolant - Concentrate - 1 Gallon
Red Line Supercool Performance Coolant - Concentrate - 1 Gallon ...
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Redline - Corporate Logo
T#:640437
Part#: 81205
In Stock
$ 68.99 USD
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$ 68.99 USD
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Red Line SuperCool Concentrate fortified with WaterWetter is a concentrated antifreeze/coolant designed to maximize the performance of your cooling system with superior protection against cavitation corrosion/erosion. Using SuperCool Concentrate diluted with distilled water 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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Red Line SuperCool Performance Coolant - Pre-Mixed - 1 Gallon
Red Line SuperCool Performance Coolant - Pre-Mixed - 1 Gallon ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Redline - Corporate Logo
T#:640436
Part#: 81215
Ships on Aug 17, 2026
$ 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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BMW M Performance Hose From Radiator Bottom - E82 E92 E93 N54 1 M Coupe 335is
BMW M Performance Hose From Radiator Bottom - E82 E92 E93 N54 1 M Cou...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW M Performance - Corporate Logo
T#:22536
Part#: 17127602294
Ships in 2 Business Days
10% off MSRP $ 194.99

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

$ 175.99 USD
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10% off MSRP
$ 194.99

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

$ 175.99 USD
Free Shipping
Add to Wish List


Genuine BMW Hose From Radiator Bottom - Thermostat
This item fits the following BMW Chassis:
E82 1M Coupe,E82,E92,E93

Fits BMW Engines including:
N54T

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BMW M Performance Left Radiator - E82,E92,E93,E82 1M Coupe
BMW M Performance Left Radiator - E82,E92,E93,E82 1M Coupe
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW M Performance - Corporate Logo
T#:46042
Part#: 17117602241
Ships in 2 Business Days
11% off MSRP $ 315.99

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

$ 281.99 USD
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11% off MSRP
$ 315.99

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

$ 281.99 USD
Free Shipping
Add to Wish List

This radiator aids in the cooling of you N54 engine which is know for running on the hot side. This is perfect for cars that see track time and spirited driving.


Genuine BMW Left Radiator
This item fits the following BMW Chassis:
E82 1M Coupe,E82,E92,E93

Fits BMW Engines including:
N54

 

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Red Line Water Wetter Heat Transfer Agent
Red Line Water Wetter Heat Transfer Agent
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Redline - Corporate Logo
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
Red Line Water Wetter Coolant Additive
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Redline - Corporate Logo
T#:394769
Part#: REDLINE5A
In Stock
Starting at $ 15.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Starting at $ 15.99 USD
Free Shipping on orders $49 and up
Add to Wish List
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 M Performance Cooling Kit - E8X E9X 135i 335i/xi N54 (03/2008+ w/ M Sport Bumper)
BMW M Performance Cooling Kit - E8X E9X 135i 335i/xi N54 (03/2008+ w/...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW M Performance - Corporate Logo
T#:5214
Part#: 11122157665
Ships in 8 Business Days
2% off MSRP $ 1,880.00

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

$ 1,846.99 USD
Add to Wish List
2% off MSRP
$ 1,880.00

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

$ 1,846.99 USD
Add to Wish List

The N54 engine is prone to running hot. If you want to track your BMW, we highly recommend upgrading your cooling system. One great option is this BMW M Performance Cooling Kit for your 135i and 335i/xi. This kit includes a new fan and fan shroud, new cooling hoses, and an additional coolant radiator for increased cooling! Also included are all the necessary components for installation .

BMW Performance Power Kit
Fits BMW Engines including:
N54
 

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