BMW Cooling System Parts & Accessories for BMW 3 Series G20 (2019+)

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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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OEM Style Hose Clamps
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Turner Motorsport - Corporate Logo
T#:338927
Part#: HOSE-CLAMPS
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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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Genuine BMW HT-12 Coolant / Antifreeze - 1 Gallon
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Genuine BMW - Corporate Logo
T#:600648
Part#: 83192468442
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Ensure optimal cooling for your BMW with Genuine BMW Coolant, providing the quality and performance your vehicle deserves. When it comes to maintaining your BMW, replacing old or worn-out parts with factory replacements is essential, and fluids are no exception. Experience the benefits of Genuine BMW Coolant: Specially designed for BMW vehicles. Factory replacement for optimal performance. Addresses flaws in the factory cooling system. Prevents antifreeze loss in both cold and hot weather. Recognizable green color for easy identification. BMW HT-12 can be used in any vehicle that currently contains G48 coolant (blue), but G48 should not continue to be used in vehicles that were originally filled with HT-12. (see compatibility image) This HT-12 Antifreeze/Coolant is exclusively formulated and produced for BMW to protect your engine year-round when used as directed. It fulfills the very high standards and requirements set by BMW to help protect the engine against freezing, boil over, corrosion, and excessive silicate gel precipitation. This ethylene glycol-based antifreeze contains no nitrites or phosphate, greatly reducing the possibility of harmful deposit formation. BMW antifreeze provides protection for metals such as cast iron, steel, and aluminum.
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PENTOFROST NF 50/50 Antifreeze / Coolant Prediluted / Premixed - 1 G...
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2X Entries For Our G87 M2 Sweepstakes!
Pentosin - Corporate Logo
T#:34181293
Part#: 8114308
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$ 20.99 USD
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ECS Tuning Aluminum Coolant Bleeder Screw
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ECS - Corporate Logo
T#:363070
Part#: 003530ECS01A
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Replace the flimsy plastic bleeder screw used in the coolant expansion tank or in one of the cooling system hoses with this high quality, durable, aluminum bleeder screw. The stock plastic screw can deform over time due to heat or even regular use. We have even seen the head of the screw snap off, leaving the threaded body stuck in the expansion tank. This aluminum screw will help to prevent sudden failure of the bleeder screw, which can result in immediate overheating of the car.

ECS Tuning's Aluminum Coolant Bleeder Screw replaces Genuine BMW Part Number 17111712788

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Mishimoto Adjustable Fan Controller Kit
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Mishimoto - Corporate Logo
T#:363510
Part#: MMFANCNTLUPROBE
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$ 88.99 USD
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$ 98.00

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Take Control of Your Engine Cooling Fan with Mishimoto's Manual Fan Controller Kit

Ensure your engine runs at the perfect temperature by using this versatile manual fan controller system, compatible with all 12v fan-equipped vehicles. With adjustable activation temperature settings ranging from 150°F to 240°F, you have precise control over your engine's cooling fan. The kit includes a probe-style temperature sensor and a generous 7 feet of wire, making it suitable for installation in vehicles of various sizes.

For added convenience, the system is equipped with a built-in A/C override feature, ensuring your cooling system works seamlessly. It's designed to work with one or two electric fans drawing a combined 25 amps or less. The package includes all the essential wiring connectors and hardware needed for a trouble-free installation.

With a lifetime warranty from Mishimoto, you can trust in the quality and durability of this manual fan controller kit.

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 warnings, visit www.P65Warnings.ca.gov.

WARNING! Prog 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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Schwaben Coolant Refill/Air Purge Tool
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Schwaben - Corporate Logo
T#:362940
Part#: 003466SCH01
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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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Coolant Vacuum Purge & Refill Tool Set
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Schwaben - Corporate Logo
T#:402498
Part#: 024948SCH01A
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The Schwaben Coolant Vacuum Fill Tool ensures no air pockets get into your cooling system while you're replacing your coolant - intended for use to refill your cooling system, not for removal. Can be used with Schwaben fluid extractors or with shop air - standard air compressor with a minimum rating of 90 PSI (6.2 bar). Includes all fittings and adapters necessary for use, with a molded storage case to keep your Schwaben Vacuum Fill Tool pristine for future use.
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Spal Universal 16" Low Profile Electric Fan
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Spal - Corporate Logo
T#:583648
Part#: 30100400
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Low profile design makes an easy fit when clearance is an issue. 1300 CFM.

Spal Electric Fan Harness with Relay - 185 Degree Switch
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Spal - Corporate Logo
T#:598892
Part#: 185FH
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SPAL® electric fan wiring harness kits are a must-have when installing electric fans. Designed to safely integrate with OEM wiring, the SPAL kits feature a waterproof relay along with printed wires which aid in installation. The wiring kits also feature stainless steel switches with optional switched override capability, fuse holder, and wiring connectors. Features: Makes installation of your new fan a breeze Designed to safely integrate with OEM wiring Feature a waterproof 10/40 amp relay with printed wires for easy installation Kit features a 3/8” NPT thermos-switch and a 3/8” to ½” NPT adapter Harness is designed for 12V systems only
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Titanium Coolant Bleeder Screw Upgrade
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Burger Motorsports - Corporate Logo
T#:38621407
Part#: BMS-TCBS
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$ 25.00 USD
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Replace your fragile OEM plastic coolant bleeder screw, which is prone to cracking and failure, with a premium titanium upgrade built for strength and style under the hood. Factory plastic components weaken over time due to constant heat cycles, leading to brittleness and potential failure. Our titanium replacement delivers superior durability, being twice as strong as aluminum yet 45% lighter than steel, ensuring unmatched resilience and long-term reliability for your coolant system. More than an upgrade, it’s a must-have for engine longevity. CNC-machined from solid titanium, each screw features a laser-etched Burger Motorsports logo and is hand-burned to create unique color patterns—no two are alike. A heavy-duty replacement O-ring is included for a perfect fit.
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Genuine BMW Engine Coolant Expansion Tank Cap - 17135A1BD89
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Genuine BMW - Corporate Logo
T#:29699315
Part#: 17135A1BD89
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$ 31.99 USD
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9% off MSRP
$ 34.99

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Genuine BMW Cover Lid
This item fits the following BMW Chassis:
E70 X5M,E71 X6M,E70 X5,E71 X6,F01,F02,F06,F10,F12,F13,F15,F16,F30,F80 M3,F82 M4,F83,i3i12

Race German Coolant Temperature Sender Adapter - M12x1.5
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Race German - Corporate Logo
T#:6827887
Part#: RGCTSAM12
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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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VTT Billet Coolant Reservoir Cap - Anodized Blue - Most BMWs 2006+ (E...
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Vargas Turbo Technologies - Corporate Logo
T#:7530036
Part#: COOLANTCAPBLUE
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$ 78.99 USD
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VTT is proud to offer their billet replacement for the factory plastic Coolant Reservoir cap. This cap does away with the weak plastic cap while adding some pop, and color to your engine bay. This coolant cap retains ALL of the factory provisions by simply allowing you to snap the factory pressure-relief into the new Billet Cap. VTT also designed these caps to complement their N5X Billet Oil caps, N5XBillet Oil filter housing caps, and Billet Power Steering cap, so all 4 will have the same design. These caps are offered in 4 colors – Red, Black, Blue, and Clear anodized Replaces Genuine BMW Reservoir Cap # 17117639020 Note: Fitment includes 99% of all BMW with a coolant Reservoir tank from the E series forward, meaning then fit even the brand New G8X M3/4 with the S58, all B58, etc. If your BMW is an E90 or newer this cap most likely will fit
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Bav Auto Spill-Proof Coolant / Antifreeze Funnel
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Bav Auto Tools - Corporate Logo
T#:580395
Part#: B8800082
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Multiple adapters include to fit a variety of vehicles.
Universal Black 16" Electric Fan
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Mishimoto - Corporate Logo
T#:363170
Part#: MMFAN16
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Radiator / Cooling System Pressure Tester- Bavarian Autosport ...
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Bav Auto Tools - Corporate Logo
T#:580397
Part#: B8800084
Ships on Jun 19, 2026
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$ 124.94 USD
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Red Line Supercool Performance Coolant - Concentrate - 1 Gallon ...
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Redline - Corporate Logo
T#:640437
Part#: 81205
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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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Genuine BMW Fan Relay
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Genuine BMW - Corporate Logo
T#:144381
Part#: 61369198302
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4% off MSRP $ 49.99

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$ 47.99 USD
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4% off MSRP
$ 49.99

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

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Genuine BMW Relay - 130A
This item fits the following BMW Chassis:
F01,F02,F06,F10,F12,F13,F15,F16,F22,F30,F31,F32,F33,F34,F36,F80 M3,F82 M4,F83,I12 i8


Schwaben Locking Hose Clamp Pliers
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Schwaben - Corporate Logo
T#:377131
Part#: 004170SCH01A
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These pliers feature a spring loaded clamp with a 24" cable and will lock onto the clamp and hold open for easy removal. These pliers are designed to remove metal or plastic self-tightening hose clamps with diameters from 11/16" to 2-1/2" ( 18 to 54mm).
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Race German Coolant Temperature Sender Adapter - 1/8NPT
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Race German - Corporate Logo
T#:6827888
Part#: RGCTSA1/8NPT
Ships in 4 Business Days
$ 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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Genuine BMW Coolant Hose - Water Pump to Cylinder Head - BMW B58C B58...
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Genuine BMW - Corporate Logo
T#:620753
Part#: 11538650983
Ships in 1 day
7% off MSRP $ 106.99

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$ 99.99 USD
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7% off MSRP
$ 106.99

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

$ 99.99 USD
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Connects from the top coolant port on the water pump to the cylinder head

BMW Universal Oil Cooler - 19 Row - Black
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Mishimoto - Corporate Logo
T#:8933504
Part#: MMOCULBK
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Ensure your BMW's engine performs at its peak with the installation of this highly efficient oil cooler from Mishimoto. Even in ideal driving conditions, elevated oil temperatures can lead to decreased pressure and compromised engine lubrication. This comprehensive kit includes four feet of stainless braided line, adapter fittings, and an oil filter sandwich adapter, all meticulously designed to reduce oil temperatures and uphold optimal driving circumstances.

  • Rows: 19
  • Overall Dimensions: 13" x 5.5" x 2"
  • Core Dimensions: 11.25" x 5.5" x 2"
  • Braided Hoses: 4ft .75 inch & 4ft 9 inch
  • Braided Hose Fittings: -10AN
  • Sandwich Plate Fittings: -10AN

Please take into consideration that this product may be subject to Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968). Proposition 65 is a California law that applies to companies selling products in California and necessitates the disclosure of chemicals known to cause cancer, birth defects, or other reproductive harm when present at levels exceeding specified thresholds. For further information regarding California Prop 65 warnings, visit www.P65Warnings.ca.gov.

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VTT Billet Coolant Reservoir Cap - Anodized Red - Most BMWs 2006+ (E/...
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Vargas Turbo Technologies - Corporate Logo
T#:7530034
Part#: COOLANTCAPRED
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$ 79.99 USD
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$ 79.99 USD
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VTT is proud to offer their billet replacement for the factory plastic Coolant Reservoir cap. This cap does away with the weak plastic cap while adding some pop, and color to your engine bay. This coolant cap retains ALL of the factory provisions by simply allowing you to snap the factory pressure-relief into the new Billet Cap. VTT also designed these caps to complement their N5X Billet Oil caps, N5XBillet Oil filter housing caps, and Billet Power Steering cap, so all 4 will have the same design. These caps are offered in 4 colors – Red, Black, Blue, and Clear anodized Replaces Genuine BMW Reservoir Cap # 17117639020 Note: Fitment includes 99% of all BMW with a coolant Reservoir tank from the E series forward, meaning then fit even the brand New G8X M3/4 with the S58, all B58, etc. If your BMW is an E90 or newer this cap most likely will fit
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Bav Auto Fan Clutch Wrench - 32mm
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Bav Auto Tools - Corporate Logo
T#:580348
Part#: B8800019
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Used to remove your fan clutch


Radiator Pressure Tester Kit
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Schwaben - Corporate Logo
T#:391482
Part#: 014710SCH01A
Ships on Jul 10, 2026
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$ 144.19 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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Genuine BMW Electronic Thermostat and Coolant Distribution Module - B...
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Genuine BMW - Corporate Logo
T#:617366
Part#: 11538642559
In Stock
12% off MSRP $ 491.99

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$ 431.99 USD
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12% off MSRP
$ 491.99

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$ 431.99 USD
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Genuine BMW electronic thermostat that is controlled by the car's computer for optimal control over the engine and coolant's temperature.
Mishimoto Universal Curved Blade Electrical Fan - 16"
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Mishimoto - Corporate Logo
T#:637390
Part#: MMFAN-16C
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This curved blade fan can be used as an upgrade to the OEM fan for more efficient cooling or fitment issues with aftermarket products. With its slim design, the fan can easily be installed flush against a radiator. For universal installation, use Mishimoto universal fan mount kit, T#363171. Features: High-flow curved blade fan provides 1850 cfm of airflow Universal fitment Compact design with a diameter of 16" and an overall thickness of only 3.2" provides increased engine bay space 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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BMW & MINI Universal Oil Cooler - 10 Row
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Mishimoto - Corporate Logo
T#:29002063
Part#: MMOC10
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$ 126.99 USD
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BMW & MINI Universal Oil Cooler - 10 Row is a versatile cooling solution designed to enhance the performance and reliability of BMW and MINI vehicles. This high-quality oil cooler provides efficient cooling for the engine oil, ensuring optimal operating temperatures and extending the life of vital engine components.

Crafted with precision engineering and durable materials, the BMW & MINI Universal Oil Cooler - 10 Row is compatible with a wide range of BMW and MINI models, offering versatility and ease of installation. It effectively dissipates heat from the engine oil, reducing the risk of overheating and engine damage.

  • Enhances performance and reliability of BMW and MINI vehicles
  • Efficient cooling for engine oil, ensuring optimal operating temperatures
  • Extends the life of vital engine components
  • Compatible with a wide range of BMW and MINI models
  • Versatile and easy to install
  • Crafted with precision engineering and durable materials

Investing in the BMW & MINI Universal Oil Cooler - 10 Row is a smart choice for BMW and MINI owners looking to improve their vehicle's performance and longevity.

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Universal Oil Cooler Black - 10 Row
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Mishimoto - Corporate Logo
T#:31291020
Part#: MMOC10BK
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$ 126.99 USD
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Universal Oil Cooler Black - 10 Row is engineered to maintain optimal oil temperatures and ensure peak engine performance under various driving conditions. This high-performance oil cooler effectively reduces oil temperatures, preventing a drop in pressure and maintaining proper engine lubrication. Featuring a robust 10-row design, it offers superior cooling efficiency compared to standard coolers.

  • Efficient Cooling: The 10-row design enhances cooling capacity to manage high oil temperatures effectively.
  • Durable Construction: Black finish provides durability and resistance to environmental factors.
  • Optimized Performance: Helps prevent a drop in oil pressure and maintains proper engine lubrication.
  • Versatile Fitment: Universal design suitable for various vehicles and applications.
  • Compact Size: Overall dimensions of 12.95" x 3.8" x 1.97" and core dimensions of 11" x 2.76" x 1.97" ensure a good fit in most engine bays.

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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Universal 16" Electric puller Fan - Black
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Spal - Corporate Logo
T#:598821
Part#: 30101516
Ships in 2 Business Days
$ 143.99 USD
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$ 143.99 USD
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1469 CFM. High performance puller fan with straight blades. This is a universal fan for applications that require more air flow or for engine compartments that have tight tolerances such as an aftermarket turbo set up that needs more clearance. This fan is universal and you must make it fit your application. It is not a direct bolt on. Made in Italy. Size: 16.3in x 15.75in x 2.48in Airflow (CFM): 1469
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Mechanical Water Pump
For models with a production date from 08/2020+ with 48V Hybrid System
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Vehicle made 05/01/2024 and On!
Genuine BMW - Corporate Logo
T#:40004842
Part#: 11515B4A144
In Stock
12% off MSRP $ 218.99

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

$ 192.99 USD
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12% off MSRP
$ 218.99

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

$ 192.99 USD
Free Shipping on orders $49 and up
New mechanical water pump directly from BMW - includes the water pump gasket
Genuine BMW Auxiliary Radiator Hose - 17128654820
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Genuine BMW - Corporate Logo
T#:620734
Part#: 17128654820
Ships in 1 day
9% off MSRP $ 94.99

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

$ 85.99 USD
Free Shipping
9% off MSRP
$ 94.99

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

$ 85.99 USD
Free Shipping

This item fits the following BMWs:

M340i G20 M340iX G20


Schwaben Locking Hose Pinch-Off Pliers
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Schwaben - Corporate Logo
T#:379950
Part#: 009787SCH01A
Ships in 5 Business Days
Sale - Save 15% $ 39.99

This product was last offered at the strikethrough price on
05-02-2026

$ 33.99 USD
Free Shipping on orders $49 and up
Sale - Save 15%
$ 39.99

This product was last offered at the strikethrough price on
05-02-2026

$ 33.99 USD
Free Shipping on orders $49 and up

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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MINI Universal 16" Electric Fan - Black
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Spal - Corporate Logo
T#:376582
Part#: 30102049
In Stock
$ 207.99 USD
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$ 207.99 USD
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For BMW owners seeking enhanced airflow or tighter engine compartment clearance, Turner Motorsport presents a Universal Fan. Ideal for applications like aftermarket turbo setups, this fan ensures optimal cooling performance. Please note that this fan is universal and may require modification to fit your specific application. Crafted in Italy, this fan boasts dimensions of 16.30in x 15.75in x 3.47in and provides an airflow of 2024 CFM.

  • Enhanced airflow for improved engine cooling
  • Ideal for applications with tight tolerances, such as aftermarket turbo setups
  • Universal design allows for versatile installation
  • Crafted in Italy for quality assurance
  • Compact size with powerful airflow capacity
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Junction Heat Hose - 11538606278
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Bremmen Parts - Corporate Logo
T#:36913362
Part#: 11538606278
In Stock
Sale - Save 21% $ 54.99

This product was last offered at the strikethrough price on
05-03-2026

$ 43.24 USD
Free Shipping on orders $49 and up
Sale - Save 21%
$ 54.99

This product was last offered at the strikethrough price on
05-03-2026

$ 43.24 USD
Free Shipping on orders $49 and up

This junction heat hose, made from rubber, is prone to cracking, dry rot, and brittleness over time, often leading to coolant leaks at the front of the engine. Such leaks pose a significant risk to your engine’s health, as rapid coolant loss can cause overheating and severe damage.

Replace your worn or leaking heat hose with this high-quality OE replacement from Bremmen Parts. Engineered for a precise fit and long-lasting performance, this hose ensures a reliable repair and helps protect your engine from potential overheating.

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AutoTecknic Dry Carbon Fiber Cooling Plate - BMW G20/ G21 M340i 3-Ser...
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AUTOTECKNIC - Corporate Logo
T#:14386749
Part#: BM-0004-M340I
Ships in 7 Business Days
$ 299.00 USD
Free Shipping on orders $49 and up
The AutoTecknic Dry Carbon Cooling Plate will provide your car with better air induction, providing the intake and engine with cooler air during high-speed driving; some customers have even reported better gas mileage and power gains.
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VTT Billet Coolant Reservoir Cap - Anodized Clear - Most BMWs 2006+ (...
This coolant cap retains ALL of the factory provisions by simply allowing you to snap t...
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Vargas Turbo Technologies - Corporate Logo
T#:7530035
Part#: COOLANTCAPRAW
Ships in 3 Business Days
$ 78.99 USD
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$ 78.99 USD
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VTT is proud to offer their billet replacement for the factory plastic Coolant Reservoir cap. This cap does away with the weak plastic cap while adding some pop, and color to your engine bay. This coolant cap retains ALL of the factory provisions by simply allowing you to snap the factory pressure-relief into the new Billet Cap. VTT also designed these caps to complement their N5X Billet Oil caps, N5XBillet Oil filter housing caps, and Billet Power Steering cap, so all 4 will have the same design. These caps are offered in 4 colors – Red, Black, Blue, and Clear anodized Replaces Genuine BMW Reservoir Cap # 17117639020 Note: Fitment includes 99% of all BMW with a coolant Reservoir tank from the E series forward, meaning then fit even the brand New G8X M3/4 with the S58, all B58, etc. If your BMW is an E90 or newer this cap most likely will fit
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Red Line SuperCool Performance Coolant - Pre-Mixed - 1 Gallon ...
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Redline - Corporate Logo
T#:640436
Part#: 81215
In Stock
$ 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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Genuine BMW Cylinder Head Coolant Hose - BMW G42 G2X G30 G01 G02 G29 ...
For models with the earlier B48D, B46D, or B46X engines - Not compatible with the later...
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Genuine BMW - Corporate Logo
T#:620754
Part#: 11538650984
In Stock
4% off MSRP $ 138.99

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

$ 133.99 USD
Free Shipping on orders $49 and up
4% off MSRP
$ 138.99

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

$ 133.99 USD
Free Shipping on orders $49 and up
Over time, rubber hoses and plastic coolant flanges can become brittle due to numerous heat cycles. This often leads to cracks and coolant leaks on the front side of the engine. Additionally, the two o-rings that seal this hose to the cylinder head and the water pump housing can flatten, leading to leaks when reinstalled. When servicing your cooling system, it is advised to replace this hose to prevent leaks and potential overheating.
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Genuine BMW Coolant Thermostat Module - BMW G20 G22/23 G30 B48 2.0L ...
For models with the earlier B48D, B46D, or B46X engines - Not compatible with the later...
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Genuine BMW - Corporate Logo
T#:617367
Part#: 11538642560
In Stock
8% off MSRP $ 446.99

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

$ 412.99 USD
Free Shipping on orders $49 and up
8% off MSRP
$ 446.99

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

$ 412.99 USD
Free Shipping on orders $49 and up
Modern BMW thermostats are electronically controlled, allowing the DME/ECU to directly regulate coolant flow throughout the engine and its components. This system enables the thermostat to operate based on a broader range of temperature inputs, such as coolant, cylinder head, engine block, and oil temperatures, for more refined control of engine warm-up and temperature across diverse conditions. Unlike traditional thermostats, which simply open or close to permit coolant flow, this system uses a rotary valve for more dynamic control. The rotary valve adjusts to various positions, allowing for partial or full coolant flow to designated passageways as needed. This precision control helps your BMW's engine reach optimal temperatures quickly and ensures efficient heat management under various driving conditions.
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Uro - Aluminum Coolant Hose Connector for E9x, and Z4
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2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO Premium - Corporate Logo
T#:37757289
Part#: 11537545890PRMK
In Stock
$ 24.99 USD
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Aluminum Connector that replaces the OEM brittle Plastic
Spal Thermo-Switch - 185 Degree
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Spal - Corporate Logo
T#:25507142
Part#: SPL185TS
In Stock at Vendor
$ 44.99 USD
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This part replaces faulty thermo-switches found in Spal electric fan conversion kits.

CTS Turbo High Performance Heat Exchanger
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CTS - Corporate Logo
T#:18932328
Part#: CTS-A90-HX
Ships in 7 Business Days
$ 499.99

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

$ 379.99 USD
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$ 379.99 USD
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The factory front-mounted heat exchanger is small and not efficient enough to provide enough cooling to tuned B48/B58 engines. CTS designed this heat exchange to overcome that problem. The double-pass core was made to be higher flowing and larger than the factory but still drop into the stock location. CNC machined mounting points and hose connections allow for a seamless install without any need to cut or trim any factory parts. Keep your B48/B58 running cool and reliably with the CTS Turbo Front Mount Heat Exchanger. Features: CNC machined mounting points and hose connection for factory fitment Drop-in design Smooth bends on the coolant connections High-efficiency double-pass aluminum core Hand-welded and pressure tested Lowers intake air temperature Installation hardware included Fully compatible with factory rock guard, simply transfer the factory parts over
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Universal 14" Electric Fan - Black
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Spal - Corporate Logo
T#:598861
Part#: 30100385
In Stock at Vendor
15% off MSRP $ 130.99

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

$ 111.99 USD
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15% off MSRP
$ 130.99

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

$ 111.99 USD
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1038 CFM. High performance puller fan with curved blades. This is a universal fan for applications that require more air flow or for engine compartments that have tight tolerances such as an aftermarket turbo set up that needs more clearance. This fan is universal and you must make it fit your application. It is not a direct bolt on. Made in Italy. Size: 15.2in x 14.5in x 2.2in Airflow (CFM): 1038
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VTT Billet/Silicone Cylinder Head Cooling Hose - B58TU
For vehicles with a production date from 01/18
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Vargas Turbo Technologies - Corporate Logo
T#:29334026
Part#: VTT-B58TU-UCH
Ships in 10 Business Days
Starting at $ 209.99 USD
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Starting at $ 209.99 USD
Free Shipping on orders $49 and up

Positioned directly in the charge pipe's path, the stock B58TU upper cylinder head cooling hose, primarily made of plastic, is prone to damage. A dislodged charge pipe can easily take out this cooling hose, leading to severe engine damage through rapid coolant loss and overheating.

To address this vulnerability, VTT has engineered a robust solution. By replacing the OEM rubber hose with a durable 7-ply silicone variant, they offer superior resilience and longevity. Furthermore, they've upgraded the factory plastic flanges to 6061-T6 billet aluminum with black anodizing, enhancing corrosion resistance.

This upgraded hose is the ultimate solution, providing protection against dislodged charge pipes and the heat generated from spirited driving or track use.

Key Features:

Direct factory replacement for easy installation 6061-T6 billet aluminum with black anodizing for improved corrosion resistance Durable 7-ply silicone available in three colors Upgrade your BMW B58TU engine with this enhanced cooling hose from Vargas Turbo Technologies for superior performance and reliability.

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Spal Universal 16" Electric Fan - Black
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Spal - Corporate Logo
T#:583649
Part#: 30102048
In Stock at Vendor
$ 207.99 USD
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$ 207.99 USD
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Universal fan that allows increased cooling capacity and shroudless design. 1959 CFM.
HOSE - JUNCTION-HEAT
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Genuine BMW - Corporate Logo
T#:546143
Part#: 11538606278
Ships in 1-3 days
8% off MSRP $ 84.99

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

$ 77.99 USD
Free Shipping
8% off MSRP
$ 84.99

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

$ 77.99 USD
Free Shipping
Hose coming off the small fitting on the thermostat. Replacement coolant hose for damaged or worn items. Dont forget to change all associated parts when doing a cooling service, or to fix a leak.
Genuine BMW Auxiliary Radiator Hose - Inlet - 17128654821
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Genuine BMW - Corporate Logo
T#:618260
Part#: 17128654821
Ships in 1 day
9% off MSRP $ 94.99

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

$ 85.99 USD
Free Shipping on orders $49 and up
9% off MSRP
$ 94.99

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

$ 85.99 USD
Free Shipping on orders $49 and up

This item fits the following BMWs:

M340i G20 M340iX G20



Genuine BMW Auxillary Electric Water Pump - G-Chassis BMW B48/46 B58 ...
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Genuine BMW - Corporate Logo
T#:602507
Part#: 11518651287
Ships in 1 day
12% off MSRP $ 88.99

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

$ 77.99 USD
Free Shipping on orders $49 and up
12% off MSRP
$ 88.99

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

$ 77.99 USD
Free Shipping on orders $49 and up
Auxillary water pumps are electric water pumps that pump coolant to critical components of your BMW. A failing pump can cause excessive noise and intermittent cooling issues, leading to potential damage if not replaced quickly enough. If the electric motor dies completely, chances are any parts downstream from the pump will overheat and fail, leading to costly repairs and replacements.
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Silver Auxiliary Coolant Reservoir Cap
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Precision Raceworks - Corporate Logo
T#:38128032
Part#: 201-0394-SIL
Ships in 7 Business Days
$ 99.99

This product was last offered at the strikethrough price on
01-22-2026

$ 94.99 USD
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$ 94.99 USD
Free Shipping on orders $49 and up

BMW Silver Auxiliary Coolant Reservoir Cap is the perfect upgrade for BMW owners looking to enhance both the aesthetics and functionality of their engine bay. Unlike generic aftermarket caps that overlook critical pressure regulation, this precision-engineered cap retains the OEM pressure release functionality, ensuring safe and reliable coolant system performance.

Crafted from high-quality billet aluminum, this reservoir cap offers superior durability and resistance to heat and fluids, preventing warping or degradation over time. Unlike adhesive-based cap covers that can loosen or fall off, this cap is a direct replacement for the factory component, providing a secure, high-performance solution.

  • OEM pressure release functionality – Maintains proper system regulation for optimal coolant performance
  • Premium billet aluminum construction – Offers enhanced durability and longevity
  • Direct replacement design – Secure fit without adhesives or modifications
  • Resistant to heat and fluids – Ensures long-lasting reliability in extreme conditions
  • Performance-inspired look – Adds a sleek, high-end appearance to your engine bay
  • Upgraded durability – Prevents cracking, leaks, and premature wear

Upgrade your BMW’s cooling system with the BMW Silver Auxiliary Coolant Reservoir Cap, blending performance, reliability, and premium styling.

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