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Mishimoto 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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Mishimoto Silicone Radiator Hose Kit - Black - BMW E46 323 325 328 33...
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T#:385000
Part#: MMHOSEE46NONMBK
In Stock at Vendor
9% off MSRP $ 220.00

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

$ 199.99 USD
Free Shipping
9% off MSRP
$ 220.00

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

$ 199.99 USD
Free Shipping

These high quality silicone hoses feature stock-type quick-disconnect fittings - no need to cut up your old hoses to get the connectors off! Unlike factory rubber hoses, silicone can withstand higher temperatures and pressures with minmal wear. Rubber will wear out and weaken so don't let it bite you when it counts! Silicone has been proven during extreme racing conditions and won't be the weak link that ruins your day.

The pre-attached stock-style plastic quick-disconnect fittings include new O-rings, providing a reliable leak-free seal during installation. We do not recommend re-using the temp sensor located in the lower radiator hose. You can add a new one to your order from the options below.

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Mishimoto Electric Fan and Shroud Kit - No Controller or Sensors - E4...
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Mishimoto - Corporate Logo
T#:378891
Part#: MMFSE4601
In Stock at Vendor
$ 373.99 USD
$ 373.99 USD
This electric fan for the E46 M3 takes the place of the stock engine-mounted fan and offers several advantages - more horsepower by removing parasitic drag customizable temp control (with optional fan controller - not included in this kit) frame included for a direct fit more reliable than a stock-style fan clutch The stock engine fan is mounted on the water pump shaft and spins with the engine. Torque from the engine is used to spin the fan, which could otherwise be used to power the car. It's not a lot of lost power and torque - Mishimoto measured a max gain of 5whp - but sometimes every little bit helps. And the other advantages of an electric fan make it a smart move. The Mishimoto electric fan uses a 16" slim profile electric fan that flows at 1,850 cubic feet per minute (CFM). The shroud and frame are black powedercoated steel and mounts to existing points on the radiator for a seamless install. Mishimoto has confirmed fitment with stock radiators as well as their own Performance and X-Line aluminum radiators. Hardware and instructions are included. An electric fan must be powered by a 12v source. A fan controller kit is optional and is activated by coolant temp. This is the preferred setup method but other types of controls may also be used. Looking for a kit that includes the fan controller and temp sensors? See T#637722
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E46 Non-M Mishimoto Electric Fan And Shroud Upgrade
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T#:391597
Part#: MMFS-E46-99
Ships in 3 Business Days
Starting at $ 420.99 USD
Starting at $ 420.99 USD

This electric fan for the E46 takes the place of the stock engine-mounted fan and offers several advantages -

  • more horsepower by removing parasitic drag
  • customizable temp control (with optional fan controller)
  • frame included for a direct fit
  • more reliable than a stock-style fan clutch

The stock engine fan is mounted on the water pump shaft and spins with the engine. Torque from the engine is used to spin the fan, which could otherwise be used to power the car. It's not a lot of lost power and torque - Mishimoto measured a max gain of 6whp - but sometimes every little bit helps. And the other advantages of an electric fan make it a smart move.

The Mishimoto electric fan uses a 16" slim profile electric fan that flows at 1,850 cubic feet per minute (CFM). The shroud and frame are black powedercoated steel and mounts to existing points on the radiator for a seemless install. Mishimoto has confirmed fitment with stock radiators as well as their own Performance and X-Line aluminum radiators. Hardware and instructions are included.

An electric fan must be powered by a 12v source. A fan controller kit is optional and is activated by coolant temp. This is the preferred setup method but other types of controls may also be used. There are two styles of Mishimoto fan controllers - a sensor located in a 1/8" NPT plug or as a 6" probe inserted between the fins on the radiator. For BMW applications, the NPT plug is usually the best and Mishimoto has this port built into their radiator designs (most other aluminum radiators do as well). For the E46, Mishimoto has a dedicated wiring harness with the optional controller that takes power from the factory fuse panel.

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Performance Oil Cooler - BMW G8X M3 M4
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T#:15544955
Part#: MMOC-G80-21SL
In Stock at Vendor
$ 776.99 USD
Free Shipping on orders $49 and up
Keep your 2021+ BMW M3/M4 cool and collected with the Mishimoto 2021+ BMW M3/M4 performance oil cooler. Much like their predecessors, the G8X M3 and M4 were designed with efficiency in mind. This can be a double-edged sword, as the optimally arranged engine bay has components placed in precarious positions. Most notably, the oil cooler is placed on the undercarriage, parallel to the road's surface. This placement increases air flow and uses aerodynamics to pull air through the core, but it also makes the stock cooler vulnerable to scrapes, bumps, and other road hazards. With this in mind, the engineers at Mishimoto set out to design a robust G8X oil cooler to keep your M3 or M4 running cool on and off the track. We started by swapping the stock tube-and-fin cooler for a bar-and-plate with CNC-machined end tanks. Our cooler boasts a 35.7-percent thicker core and a 41-percent increase in core volume for superior cooling efficiency. Our cooler fits directly in place of the stock unit and retains the stock seals and bash guards for optimal airflow and additional protection. The Mishimoto performance oil cooler for the 2021+ BMW G8X M3/M4 includes everything needed for installation and, as with all Mishimoto products, it's protected by the Mishimoto Lifetime Warranty for a lifetime of protection and cooling. Product Features: Direct fit for the 2021+ BMW G8X M3/M4 Full aluminum TIG-welded construction 41-percent increase in core volume and 35.7-percent thicker core than stock for improved cooling efficiency Robust bar-and-plate core provides superior pressure tolerance and durability Retains stock seals for optimal air flow from fresh air ducts Retains bash guards to protect cooler from bumps and curbs Silver powder coated finish for maximum corrosion resistance No cutting or modifications required Includes everything needed for installation Mishimoto Lifetime Warranty
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Performance Auxiliary Radiators
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Mishimoto - Corporate Logo
T#:17538760
Part#: MMRAD-G80-21A
Ships in 2 Business Days
$ 587.99 USD
Free Shipping on orders $49 and up
Mishimoto Performance Aluminum Radiator - E46 M3
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Mishimoto - Corporate Logo
T#:378511
Part#: MMRADE4601
Ships in 3 Business Days
$ 721.99 USD
$ 721.99 USD
Mishimoto radiators address all of the defects of the stock E46 radiator in a well-engineered and price-competitive direct replacement unit. The Mishimoto radiator is an all aluminum design that replaces the factory plastic and aluminum stock radiator. The stock plastic end tanks are notorious for cracking and leaks whereas the Mishimoto has aluminum end tanks that will never fail. Mishimoto can also build 30% more coolant capacity into the a radiator that fits in the original location with no modifications. More coolant volume means the fluid is not heat soaked for as long (less super heated fluid circulating through the engine). For a direct replacement performance radiator, the Mishimoto is hard to beat!
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Mishimoto Silicone Radiator Hose Kit - Red - E46 M3
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T#:378416
Part#: MMHOSEE4699RD
In Stock at Vendor
$ 121.99 USD
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$ 121.99 USD
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Mishimoto BMW E46 silicone radiator hose kits are made with a dual-layer combining high-grade silicone and heat-resistant embedded fibers to provide efficient heat reduction and increased pressure tolerance, all with an OEM replacement fit. Perfect for your BMW. Direct fit for 2001–2006 BMW E46 M3 Max temperature of 330°F Made of high-grade silicone and heat-resistant embedded fibers Efficiently reduces heat Increases pressure tolerance OEM replacement fit Available in black, blue, or red Mishimoto Lifetime Warranty WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.
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Universal 12" Electric Fan - Blue
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Mishimoto - Corporate Logo
T#:378412
Part#: MMFAN12BL
Ships in 2 Business Days
$ 106.99 USD
Free Shipping
$ 106.99 USD
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WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.
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R52 / R53 Performance Aluminum Radiator MMRADTINY01
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Mishimoto - Corporate Logo
T#:23416485
Part#: MMRADTINY01
In Stock
$ 457.99 USD
$ 457.99 USD

When seeking a radiator for enhanced performance or street use, opt for the most efficient cooling available. The Mishimoto aluminum radiators stand as an exceptional upgrade from stock cooling systems. Delivering up to 30% more cooling capacity than a new stock radiator, this radiator ensures optimal cooling whether on the track or street.

This radiator boasts a direct-fit design and features an aluminum neck welded to each corner for durability and precise fitment. Additionally, Mishimoto offers comprehensive coverage under its no-questions-asked warranty policy. In the event of fender bender damage, Mishimoto provides warranty coverage, inclusive of vehicles involved in accidents. Warranty claims necessitate accident pictures, an official police report, and must be made within three months of the accident.

  • Up to 30% more cooling capacity than stock radiators
  • Direct fit with aluminum neck welded to each corner
  • Mishimoto's no questions asked warranty policy for accident-related damages

WARNING! Prop 65 may apply to this product.

Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to all companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm.

For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.

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Mishimoto Universal Fan Mount Kit
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Mishimoto - Corporate Logo
T#:363171
Part#: MMFANMOUNT
In Stock
$ 15.99 USD
Free Shipping on orders $49 and up
The Mishimoto universal fan mount kit is used to mount a Mishimoto electric fan to any Mishimoto aluminum radiator. Great for custom applications, the Mishimoto fan can be mounted in any convenient position on the radiator. Universal fan mount fits any Mishimoto electric fan Ideal for custom applications Mounts fan in any convenient position Mishimoto Lifetime Warranty
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MINI R52 R53 Silicone Hose Kit - Red
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Mishimoto - Corporate Logo
T#:27938433
Part#: MMHOSETINY01RD
In Stock at Vendor
$ 217.99 USD
Free Shipping on orders $49 and up

Upgrade your Mini's engine with the MINI R52 R53 Silicone Hose Kit in Red. This kit offers durability and performance, making it an ideal choice for enthusiasts.

  • High-quality silicone construction for durability and heat resistance
  • Resistant to oil, fuel, and coolant for long-lasting performance
  • Improves airflow and reduces the risk of hose collapse under high pressure
  • Enhances the appearance of the engine bay with a vibrant red color
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Mishimoto Essentials Bundle - BMW E46 3'
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T#:51039991
Part#: MMB-E46-002
Ships in 3 Business Days
New Item
$ 1,127.99 USD
$ 1,127.99 USD
Don’t let a plastic cooling system stand between you and the road.


Mishimoto Oil Line Fitting Kit - BMW F80, F82, F83, F87 (M2 Competiti...
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Mishimoto - Corporate Logo
T#:51075080
Part#: MMOCF-F80
Ships in 3 Business Days
New Item
$ 100.99 USD
Free Shipping on orders $49 and up
The Mishimoto S55 Oil Line Fitting is a robust upgrade designed for the rigorous demands of competitive racing.
Mishimoto Essentials Bundle - BMW E36 3'
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T#:51039948
Part#: MMB-E36-001
Ships in 3 Business Days
New Item
$ 1,141.00 USD
$ 1,141.00 USD
Each part in this bundle is selected to improve the E36's fluid dynamics and thermal stability.
Mishimoto Performance Auxiliary Radiators - A90 MK5 Toyota Supra, G29...
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T#:638024
Part#: MMRAD-SUP-20A
In Stock at Vendor
$ 610.99 USD
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$ 610.99 USD
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Dramatically increase the cooling performance of your Supra with Mishimoto's new Performance Aluminum Radiator. Key Features: All aluminum construction More durable and longer-lasting than plastic components 30% more capacity in the same space 180% Increase to external fin surface area Excellent fit and finish Unbeatable lifetime warranty and accident-forgiveness Mishimoto radiators address all of the defects and deficiencies of the stock Supra auxiliary radiators in a well-engineered and price-competitive direct replacement pair. Mishimoto's radiators feature an all-aluminum design that replaces the factory plastic and aluminum stock radiators. BMW style plastic end tanks are notorious for cracking and leaks, whereas the Mishimoto has aluminum end tanks that will never fail. Mishimoto also allows a 30% increase in coolant capacity into the radiator that fits in the original location with no modifications. More coolant volume means the fluid is not heat soaked for as long (less superheated fluid circulating through the engine). For a direct replacement performance radiator, the Mishimoto is hard to beat! Mishimoto was established in 2003 as a supplier of cooling components for drift and rally cars. Their radiators and intercoolers soon found a strong following in the hyper-competitive drift scene where high horsepower and prolonged high revs dictate the need for durable and robust cooling solutions. The catchy Mishimoto name is a combination of the name of the founder's family pet - Mishi - and "moto". All products are designed and tested in the USA using state-of-the-art CAD tools and prototyping and with the continuous evolution of product design. Mishimoto is so dedicated to quality that they offer a limited lifetime warranty and accident forgiveness. WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.
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Mishimoto Performance Heat Exchanger - Manual Transmission - BMW G8X ...
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T#:21209833
Part#: MMHE-G80-21MT
In Stock at Vendor
$ 810.99 USD
Free Shipping on orders $49 and up
Introducing the Mishimoto 2021+ BMW G8X M3/M4 performance heat exchanger, the ultimate solution to keep your charge air cool under the most demanding conditions. In the world of forced induction vehicles, air-to-water intercooling is the future, and Mishimoto are taking it to the next level. We started from scratch, leaving no room for compromise. Our design eliminates all plastic components, replacing them with durable aluminum end tanks, core, and CNC-machined ports. TIG-welded for maximum strength and longevity, this heat exchanger will withstand even the harshest conditions. We took it further by incorporating strutted tubes within the core, adding unparalleled resistance against bowing and flexing during aggressive cornering. But strength is not our only focus. We've increased the core volume by 23 percent and expanded the external fin surface area by 44 percent. Combined with our dual-pass flow configuration and louvered fin design, this performance heat exchanger vastly improves cooling capacity over stock, enhancing overall performance. Rest assured, the Mishimoto Performance Heat Exchanger for the 2021+ BMW G8X M3/M4 is designed to fit perfectly with all other factory components, ensuring seamless integration into your vehicle. For added protection, we include steel rock guards to shield the heat exchanger from debris and prevent punctured tubes or crushed fins. The Mishimoto G8X M3/M4 performance heat exchanger fits both automatic and manual transmissions. The Mishimoto 2021+ BMW G8X M3/M4 performance heat exchanger comes with our renowned Mishimoto Lifetime Warranty, giving you peace of mind and confidence in your investment. Upgrade your BMW G8X M3/M4 with the Mishimoto Heat Exchanger and experience the true power of cooling efficiency. Features: Direct fit for the 2021+ BMW G8X M3/M4 23 percent increase in core volume improves cooling capacity 44 percent increase in external fin surface area for greater heat transfer Dual-pass design for maximum cooling Strutted tubes incorporated in core for maximum durability CNC-machined inlet and outlet for leak-free running Includes removable steel rock guards for additional durability Mishimoto Lifetime Warranty Includes: (1) Performance Aluminum Heat Exchanger (1) Upper Rock Guard (1) Lower Rock Guard (MT Only) (1) Hardware Pack Mishimoto Lifetime Warranty
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Mishimoto Essentials Bundle - BMW E46 M Cars
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T#:51039998
Part#: MMB-E46-001
Ships in 3 Business Days
New Item
$ 1,108.99 USD
$ 1,108.99 USD
This bundle optimizes the E46’s thermal efficiency by converting the heavy, parasitic mechanical clutch fan to a high-flow electric unit.
Mishimoto Racing Thermostat & Housing - BMW F8X M2, M3, M4
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T#:51075075
Part#: MMTS-F80-15
Ships in 3 Business Days
New Item
$ 139.99 USD
Free Shipping on orders $49 and up
The Mishimoto S55 Racing Thermostat provides superior thermal control compared to standard equipment.

Performance Aluminum Radiator
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Mishimoto - Corporate Logo
T#:392693
Part#: MMRADE3692KT
In Stock
$ 383.99 USD
Free Shipping
$ 383.99 USD
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WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.
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Universal 10" Electric Fan - Black
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Mishimoto - Corporate Logo
T#:378434
Part#: MMFAN10
In Stock at Vendor
$ 88.99 USD
Free Shipping
$ 88.99 USD
Free Shipping
WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.
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1988-1999 BMW 3-Series/1995-1999 BMW M3 , Automatic Replacement Radia...
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Mishimoto - Corporate Logo
T#:597382
Part#: R1841-AT
Back Ordered
$ 143.99 USD
$ 143.99 USD
This 1988-1998 BMW 3 Series radiator is a direct OEM replacement for your old stock unit. There is no need to bend, cut, or modify anything to ensure proper fitment in your vehicle. This radiator features OEM spec plastic end tanks attached to an aluminum core for stock cooling efficiency. At some point the inevitable happens to original stock radiators. They either spring a leak, get clogged up, or a plastic inlet or outlet cracks due to years of constant clamp pressure. This 1988-1999 BMW 3Series radiator is a perfect replacement to keep your cooling system in top-notch shape, and just like all Mishimoto parts, it comes with the Mishimoto Lifetime Warranty. WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.
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1999-2001 BMW 740i/750i Radiator Replacement
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Mishimoto - Corporate Logo
T#:597379
Part#: R2285-MT
Back Ordered
$ 256.99 USD
$ 256.99 USD
This 1999-2001 BMW 740i/iL 4.4L V8 radiator is a direct OEM replacement for your old stock unit. There is no need to bend, cut, or modify anything to ensure a proper fitment in your vehicle. This radiator features OEM spec plastic end tanks attached to an aluminum core for stock cooling efficiency. At some point the inevitable happens to original stock radiators. They either spring a leak, get clogged up, or a plastic inlet or outlet cracks due to years of constant clamp pressure. This BMW 740i/iL radiator is a perfect replacement to keep your cooling system in top-notch shape, and just like all Mishimoto parts, it comes with the Mishimoto Lifetime Warranty. WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov. WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.
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