BMW Cooling System Parts & Accessories for BMW 4 Series G22 (2021+)

Genuine BMW HT-12 Coolant / Antifreeze - 1 Gallon

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T#:600648

Part#: 83192468442

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$ 35.95 USD

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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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Genuine BMW Coolant Hose - Water Pump to Cylinder Head - BMW B58C B58...

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T#:620753

Part#: 11538650983

Ships in 3 Business Days

5% off MSRP $ 106.99

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$ 101.99 USD

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$ 106.99

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

Genuine BMW Electronic Thermostat and Coolant Distribution Module - B...

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T#:617366

Part#: 11538642559

In Stock

Sale - Save 5% $ 443.99

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$ 421.60 USD

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$ 421.60 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.

Mechanical Water Pump

For Pre-LCI models with the B58D engine with 48V Hybrid System

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Vehicle made 05/01/2024 and On!

T#:40004842

Part#: 11515B4A144

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10% off MSRP $ 218.99

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$ 197.99 USD

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$ 218.99

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$ 197.99 USD

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New mechanical water pump directly from BMW - includes the water pump gasket

Junction Heat Hose - 11538606278

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T#:36913362

Part#: 11538606278

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Sale - Save 21% $ 54.99

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

$ 43.24 USD

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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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Genuine BMW Cylinder Head Coolant Hose - BMW G42 G2X G30 G01 G02 G29 ...

For Pre-LCI models with the earlier B46D engine

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T#:620754

Part#: 11538650984

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2% off MSRP $ 138.99

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$ 135.99 USD

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2% off MSRP

$ 138.99

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$ 135.99 USD

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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 Pre-LCI models with the earlier B46D engine

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T#:617367

Part#: 11538642560

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6% off MSRP $ 446.99

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$ 419.99 USD

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$ 446.99

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$ 419.99 USD

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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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HOSE - JUNCTION-HEAT

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T#:546143

Part#: 11538606278

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6% off MSRP $ 84.99

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$ 79.99 USD

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$ 84.99

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$ 79.99 USD

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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.

Genuien BMW Thermostat Module Coolant Pipe W/ Wire Bracket - BMW G42 ...

For Pre-LCI models with the earlier B46D engine

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T#:636427

Part#: 11538651265

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1% off MSRP $ 78.99

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$ 77.99 USD

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$ 78.99

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This coolant pipe connects to the thermostat module. When replacing the thermostat module, aka the heat management module, or other nearby cooling components, such as the water pump, this coolant pipe should be replaced. The o-ring seal also tends to flatten over time, preventing a proper seal after reinstallation, leading to a coolant leak.

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Genuine BMW Cooant Pump with Support Housing - BMW G42 G2X G30 G01 G0...

For Pre-LCI models with the earlier B46D engine and without the Energy Recovery System

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T#:606625

Part#: 11518650988

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10% off MSRP $ 300.99

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$ 271.99 USD

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$ 300.99

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$ 271.99 USD

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Mechanical water pumps circulate coolant between the engine block, cylinder head, and radiators. Over time, the seals and bearings can wear out, leading to leaks from the impeller shaft and around the pump face. Some BMW water pumps have even had imellers that come loose from the shaft, resulting in little or no coolant flow. Plastic coolant flanges attached to the housing can become brittle over time, cracking or breaking off completely, leading to coolant loss and overheating. Restore cooling functionality and performance with a brand new pump directly from BMW. This coolant pump assembly includes the pump, the coolant support housing, four of the plastic coolant flanges, and a new water pump pulley.

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SCREW CAP FOR EXPANSION TANK

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T#:628106

Part#: 17138665638

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6% off MSRP $ 34.99

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$ 32.99 USD

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$ 34.99

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Genuine BMW water pump housing coolant flange - G-Chassis - B48TU (B4...

For B48TU Gen 2 applications (B46D/B48D)

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T#:48780791

Part#: 11515A74E79

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4% off MSRP $ 133.99

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$ 128.99 USD

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$ 133.99

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$ 128.99 USD

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Genuine BMW replacement coolant flange for back of water pump housing

Genuine BMW Expansion Tank Coolant Hose - BMW G42 G20 G22/23/26 B46/B...

For Pre-LCI models with the earlier B46D engine

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T#:624478

Part#: 17128654824

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7% off MSRP $ 57.99

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$ 53.99 USD

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$ 57.99

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This coolant hose connects your cylinder head to your expansion tank. Replace your cracked or split coolant expansion tank hose to prevent coolant and pressure loss in your cooling system.

WATER PUMP

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T#:636029

Part#: 11518482250

In Stock

10% off MSRP $ 180.99

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$ 162.99 USD

Limited Qty Sale

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$ 180.99

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$ 162.99 USD

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Genuine BMW Lower Radiator Hose - BMW G42 G20 G22/23/26 B46/B48 ...

For Pre-LCI models with the earlier B46D engine

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T#:618175

Part#: 17128654823

In Stock

Sale - Save 5% $ 131.99

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$ 125.03 USD

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The lower radiator hose transfers low temp coolant from your radiator to your engine, helping to keep engine temperatures in check. If your lower radiator hose failed, replace it with this Genuine BMW hose to prevent additional coolant loss, overheating, and stop air from entering your coolant system.

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OEM INA Electronic Thermostat And Coolant Distribution Module - BMW B...

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T#:36201645

Part#: 11538642559

In Stock at Vendor

$ 367.33 USD

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Engineered specifically for BMW models, the electronic thermostat and coolant distribution module plays a vital role in the engine’s cooling system, adapting to changing temperatures for superior performance under all driving conditions. Whether on the track or the highway, this module ensures your BMW runs cooler, longer, and more efficiently.

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OEM Rein Turbocharger Coolant Supply Line - BMW Gen2 B46/B48 2.0L ...

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T#:34315143

Part#: 11538629971

Ships in 4 Business Days

Sale - Save 15% $ 47.99

This product was last offered at the strikethrough price on
04-28-2026

$ 40.63 USD

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Turbo coolant supply lines feed coolant to the turbocharger, ensuring temperatures are kept in check. If your coolant line is leaking, it is important to replace it as soon as possible to prevent coolant loss, overheating, and turbo damage.

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Coolant Return Line

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T#:53856300

Part#: 11538650087

Ships in 4 Business Days

Sale - Save 6% $ 60.99

This product was last offered at the strikethrough price on
06-29-2026

$ 57.46 USD

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Rein Automotive turbo hoses are engineered to meet these rigorous demands, providing the reliability required for both the track and the street.

PROFILE-GASKET

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T#:528940

Part#: 11518632587

Ships in 3 Business Days

15% off MSRP $ 38.99

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$ 32.99 USD

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$ 38.99

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This gasket needs to be replaced when splitting apart your pulley housing from the water pump. Gasket that goes between the coolant pump and the coolant pump front pulley assembly.

Genuine BMW Engine Oil Cooler - BMW B58 & B58TU 3.0L (B58A & B58D) ...

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T#:541339

Part#: 11428583901

Ships in 3 Business Days

7% off MSRP $ 266.99

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$ 248.99 USD

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7% off MSRP

$ 266.99

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$ 248.99 USD

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Engine oil coolers help reduce the oil temperature, preventing the oil from breaking down prematurely and losing its lubricating properties. Engine oil coolers play a crucial role in regulating oil temperature, ensuring proper lubrication, and optimizing engine performance and longevity. Engine oil that is too hot drops in viscosity and does not provide adequate lubrication to sensitive engine components such as bearings, which can fail catastrophically if not properly lubricated. If your engine oil cooler has been damaged or has failed we recommend replacing it to ensure no damage occurs to your engine.

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Oil Cooler Gasket Set

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T#:15048412

Part#: 11428583897

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$ 21.99

This product was last offered at the strikethrough price on
06-03-2026

$ 16.99 USD

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$ 16.99 USD

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Avoid leaks and other issues by replacing your oil cooler gaskets upon taking out or replacing the unit itself!

Water/Coolant Pump With Support

For Pre-LCI models with the earlier B46D engine and without the Energy Recovery System

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T#:49648357

Part#: 11518650988

In Stock

Sale - Save 5% $ 234.99

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

$ 222.86 USD

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PENTOFROST NF 50/50 Antifreeze / Coolant Prediluted / Premixed - 1 G...

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T#:34181293

Part#: 8114308

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Sale - Save 5% $ 20.99

This product was last offered at the strikethrough price on
06-29-2026

$ 19.94 USD

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Blue G11/G48 Coolant Pre-Mixed 50/50

BMW Water Pump Gasket

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T#:15247123

Part#: 11518632587

In Stock

$ 20.99

This product was last offered at the strikethrough price on
01-31-2026

$ 13.49 USD

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$ 13.49 USD

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In order to ensure a leak free driving experience, replace these gaskets whenever you change or work on your water pump. If you are noticing small leaks, these might be to blame.

Genuine BMW Coolant Hose - Waterp Pump to Thermostat Module - BMW G42...

For Pre-LCI models with the earlier B46D engine

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T#:618269

Part#: 11538650981

In Stock

10% off MSRP $ 109.99

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

$ 98.99 USD

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$ 109.99

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$ 98.99 USD

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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 left side of the engine. Additionally, the two o-rings that seal this hose to the water pump flange and the thermostat module 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. This is especially helpful due to its cramped location, requiring the intake manifold to be removed for replacement.

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Electronic Thermostat And Coolant Distribution Module

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T#:50311455

Part#: 11538843406

In Stock

Sale - Save 10% $ 397.99

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

$ 358.01 USD

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$ 397.99

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Genuine BMW Hose Clamp 07129952104

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T#:6533

Part#: 07129952104

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$ 3.99 USD

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$ 3.99 USD

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GENUINE BMW HOSE CLAMP 07129952104

Genuine BMW Isa Screw - 07129905494

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T#:28891

Part#: 07129905494

Ships in 1-2 days

5% off MSRP $ 7.74

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$ 7.33 USD

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5% off MSRP

$ 7.74

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$ 7.33 USD

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Genuine water pump hardware. M6x16-8.8. 6 of these screws are found in association with the water pump

Genuine BMW Profile-Gasket - 11538658571

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T#:222845

Part#: 11538658571

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7% off MSRP $ 14.99

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$ 13.99 USD

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$ 14.99

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Gasket that goes between the thermostat and radiator return pipe. Gaskets and seals are a wear item that should be replaced in conjunction with associated parts.

Engine Oil Cooler

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T#:42436716

Part#: 11428583901

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$ 52.99 USD

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Engine oil coolers are critical for keeping oil temperatures in check, preventing premature breakdown and maintaining proper lubrication. When oil gets too hot, it loses viscosity and can't effectively protect vital engine components like bearings—which can lead to serious, even catastrophic, failures. If your oil cooler is damaged or has failed, replacing it is essential to protect your engine and keep everything running smoothly.

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Rein Aluminum Oil Filter Housing - BMW B58

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T#:49404665

Part#: 11428583901

In Stock

Sale - Save 5% $ 408.99

This product was last offered at the strikethrough price on
06-29-2026

$ 388.03 USD

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$ 408.99

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For those who push their engines to the limit, "good enough" is a liability. Upgrade to the Rein HEU0116 Aluminum Oil Filter Housing—the professional’s choice for durability and peace of mind.

OEM Nissens Engine Oil Cooler - BMW B58 & B58TU 3.0L (B58A & B58D) ...

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T#:27905106

Part#: 11428583901

In Stock at Vendor

$ 106.99

This product was last offered at the strikethrough price on
05-07-2026

$ 103.99 USD

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Engine oil coolers help reduce the oil temperature, preventing the oil from breaking down prematurely and losing its lubricating properties. Engine oil coolers play a crucial role in regulating oil temperature, ensuring proper lubrication, and optimizing engine performance and longevity. Engine oil that is too hot drops in viscosity and does not provide adequate lubrication to sensitive engine components such as bearings, which can fail catastrophically if not properly lubricated. If your engine oil cooler has been damaged or has failed we recommend replacing it to ensure no damage occurs to your engine.

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Genuine BMW Water Pump & Thermostat Kit - BMW B58C B58D (B58TU) ...

For vehicles with the B58D (Gen2) engine only - Will not fit the earlier B58A (Gen1) en...

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For models without the 48V Mild Hybrid package

T#:29333997

Part#: 11518482251KT

Ships in 3 Business Days

$ 715.99 USD

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$ 715.99 USD

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If your water pump or thermostat has failed, this kit includes all the basic components needed to replace and restore your cooling system! Included: Water Pump Thermostat Housing (aka Heat Management Module) Coolant Outlet Pipe (L-Pipe) Gaskets & Seals

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Genuine BMW Upper Radiator Cooant Hose - BMW G42 G20 G22/23/26 B48D/B...

For Pre-LCI models with a production date up to 07/2021 or a production date from 07/20...

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T#:618222

Part#: 17128654834

Ships in 3 Business Days

7% off MSRP $ 141.99

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

$ 131.99 USD

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7% off MSRP

$ 141.99

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Replace your old coolant hose with a brand new hose from Genuine BMW to eliminate coolant leaks and prevent overheating.

Genuine BMW Coolant Expansion Tank - High Temp Circuit - BMW G42 G20 ...

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T#:613870

Part#: 17138610652

Ships in 3 Business Days

7% off MSRP $ 198.99

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$ 185.99 USD

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7% off MSRP

$ 198.99

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$ 185.99 USD

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If your coolant reservoir tank has cracked or if one of the mounting points has broken, this is the perfect replacement to ensure your coolant system remains leak-free. This reservoir specifically works with the high-temp circuit, which is responsible for cooling your engine block and cylinder head.

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Genuine BMW Coolant Expansion Tank - Low Temp Circuit - BMW G42 G20 G...

For Pre-LCI models only

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T#:613871

Part#: 17138610653

Ships in 3 Business Days

6% off MSRP $ 170.99

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

$ 159.99 USD

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6% off MSRP

$ 170.99

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$ 159.99 USD

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If your coolant reservoir tank has cracked or if one of the mounting points has broken, this is the perfect replacement to ensure your coolant system remains leak-free. This reservoir specifically works with the low-temp circuit, which is responsible for cooling your manifold-integrated intercooler

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Genuine BMW Thermostat Module Preformed Seal - Small - BMW B58C B58D ...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:624783

Part#: 11539494424

Ships in 3 Business Days

13% off MSRP $ 14.99

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

$ 12.99 USD

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13% off MSRP

$ 14.99

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

$ 12.99 USD

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This preformed seal is an o-ring seal that seals the connection between the thermostat housing/heat management module and the engine block. This seal is the larger of two seals located on the side of the heat management module.

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Genuine BMW O-Ring - BMW B58TU

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T#:622579

Part#: 11539425963

Ships in 3 Business Days

$ 4.99 USD

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$ 4.99 USD

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Seals the connection between the Heat Management Module and the water pump housing

Radiator Return Pipe - B58

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:545300

Part#: 11538630023

Ships in 3 Business Days

7% off MSRP $ 329.99

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

$ 306.99 USD

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Qty

7% off MSRP

$ 329.99

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

$ 306.99 USD

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Coolant pipe that runs from the thermostat next to the engine block. Make sure your cooling system is working properly and leak free. When your in the tight spaces doing a service it makes sense to change all associated parts.

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Genuine BMW Thermostat Module Preformed Seal - Large - BMW B58C B58D ...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:624784

Part#: 11539494425

Ships in 3 Business Days

13% off MSRP $ 14.99

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

$ 12.99 USD

Add to Wish List

Qty

13% off MSRP

$ 14.99

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

$ 12.99 USD

Add to Wish List

This preformed seal is an o-ring seal that seals the connection between the thermostat housing/heat management module and the engine block. This seal is the larger of two seals located on the side of the heat management module.

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Thermostat O-ring

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:526204

Part#: 11538658572

In Stock

$ 9.99

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

$ 8.99 USD

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$ 8.99 USD

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O ring that seals the thermostat to the coolant pump. New seals are a must when doing any repairs.

Genuine BMW Upper Radiator Cooant Hose - BMW G42 G20 G22/23/26 B48D/B...

For Pre-LCI vehicles with a production date of 07/2021+ with Control DSC package (S8WEA)

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:49857443

Part#: 17125A44477

Ships in 5 Business Days

7% off MSRP $ 141.99

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

$ 131.99 USD

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7% off MSRP

$ 141.99

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

$ 131.99 USD

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Replace your old coolant hose with a brand new hose from Genuine BMW to eliminate coolant leaks and prevent overheating.

O-RING

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T#:580584

Part#: C32348

In Stock

$ 3.99

This product was last offered at the strikethrough price on
05-07-2026

$ 2.99 USD

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$ 2.99 USD

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Genuine BMW Coolant Expansion Tank - Low Temp Circuit - BMW G20 G22/2...

For LCI models only

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T#:49857448

Part#: 17135A270D3

Ships in 6 Business Days

6% off MSRP $ 170.99

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

$ 159.99 USD

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Qty

6% off MSRP

$ 170.99

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

$ 159.99 USD

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If your coolant reservoir tank has cracked or if one of the mounting points has broken, this is the perfect replacement to ensure your coolant system remains leak-free. This reservoir specifically works with the low-temp circuit, which is responsible for cooling your manifold-integrated intercooler

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VEMO Electronic Thermostat And Coolant Distribution Module - BMW B58T...

For vehicles with the early B58C or B58D TU engine - Will not fit the B58N TU2 engine

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T#:52903296

Part#: V20-99-0005

Ships in 10 Business Days

$ 336.99 USD

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$ 336.99 USD

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An electronic thermostat that is controlled by the car's computer for optimal control over the engine and coolant temperature. Internal valves are opened and closed by the vehicle's DME/ECU to achieve specific temperature targets for optimal engine efficiency and performance.

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VEMO Coolant Thermostat Assembly - BMW G20 G22/23 G30 B48 2.0L ...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:49578587

Part#: V20-99-1310

Special Order: No Guaranteed ETA

$ 182.99 USD

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$ 182.99 USD

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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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