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BMW Cooling System Parts & Accessories for BMW A90 MKV Supra B58 3.0L

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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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Bav Auto Spill-Proof Coolant / Antifreeze Funnel

10X Entries Into Our F80 M3 Sweepstakes

T#:580395

Part#: B8800082

Ships in 8 Business Days

Sale - Save 15% $ 33.99

This product was last offered at the strikethrough price on
08-19-2026

$ 28.99 USD

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Sale - Save 15%

$ 33.99

This product was last offered at the strikethrough price on
08-19-2026

$ 28.99 USD

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Multiple adapters include to fit a variety of vehicles.

Bav Auto Fan Clutch Wrench - 32mm

10X Entries Into Our F80 M3 Sweepstakes

T#:580348

Part#: B8800019

In Stock

Sale - Save 20% $ 29.99

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

$ 23.99 USD

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Sale - Save 20%

$ 29.99

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

$ 23.99 USD

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Used to remove your fan clutch

Radiator / Cooling System Pressure Tester- Bavarian Autosport ...

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T#:580397

Part#: B8800084

In Stock

Sale - Save 15% $ 146.99

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

$ 124.94 USD

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Sale - Save 15%

$ 146.99

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

$ 124.94 USD

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HOSE - JUNCTION-HEAT

T#:546143

Part#: 11538606278

In Stock

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

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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

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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.

Vargas Billet Water Neck - B58 Mk5 Supra/G29 Z4

2X Entries Into Our F80 M3 Sweepstakes

T#:7292067

Part#: VTT-A90G29-WN

Ships on Oct 27, 2026

$ 147.99 USD

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$ 147.99 USD

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The Factory B58 TU water neck is plastic and is right in the path of your charge pipe if you lose a connection and it blows off. If this does happen to you it can break the plastic neck emptying your coolant in seconds causing you in the best-case scenario to be stranded, and in the worst-case scenario expensive engine damage. Add some cheap insurance with Vargas' Billet Water neck. Product Details: Plug and play direct factory replacement 6061-T6 Billet aluminum with black anodizing for a corrosion-free life Cheap insurance against a blown charge pipe which could turn into a blown motor

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PROFILE-GASKET

T#:528940

Part#: 11518632587

Ships in 1-2 days

13% off MSRP $ 38.99

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

$ 33.99 USD

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13% off MSRP

$ 38.99

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

$ 33.99 USD

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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.

Bav Auto Angled Hose Pinch Plier Set - 2pc

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T#:580379

Part#: B8800058

In Stock

Sale - Save 25% $ 32.99

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

$ 24.74 USD

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Sale - Save 25%

$ 32.99

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

$ 24.74 USD

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Angled jaws close, creating a complete seal every time you use them - the jaws are offset, making it possible to use in hard-to-reach locations. Made of glass-filled nylon for extra strength. These are perfect for use with brake lines, etc.

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Genuine BMW Isa Screw - 07129905494

T#:28891

Part#: 07129905494

In Stock

5% off MSRP $ 7.74

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

$ 7.33 USD

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5% off MSRP

$ 7.74

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

$ 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

T#:222845

Part#: 11538658571

In Stock

7% 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.

$ 13.99 USD

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7% 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.

$ 13.99 USD

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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.

Genuine BMW Hose Clamp 07129952104

T#:6533

Part#: 07129952104

In Stock

$ 3.99 USD

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$ 3.99 USD

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GENUINE BMW HOSE CLAMP 07129952104

Vargas Remote Oil Cooler Adapter - BMW B58, Toyota A90/A91

2X Entries Into Our F80 M3 Sweepstakes

T#:51778122

Part#: VTT-B58-OIL-COOL

Ships on Oct 27, 2026

$ 157.99 USD

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$ 157.99 USD

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The VTT Billet B58 Remote Oil Cooler Adapter is an ideal upgrade for B58-powered platforms.

Vargas Billet HMM Delete Kit - BMW B58TU

Fits all B58 TU / Gen 2 B58 engines

2X Entries Into Our F80 M3 Sweepstakes

T#:51672725

Part#: VTT-B58-COOLING-

Ships on Oct 27, 2026

$ 199.99 USD

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$ 199.99 USD

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The VTT Billet B58 HMM Delete is for enthusiasts who want to remove the bulky, plastic factory coolant unit in favor of a robust, motorsport-oriented setup.

Vargas Billet Coolant Block-Off - BMW B58 Engine

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T#:52094566

Part#: VTTFAB040BLKB58

Ships on Oct 27, 2026

$ 31.99 USD

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$ 31.99 USD

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Engineered for precision and durability, the VTT-FAB-040 B58 Block-Off Flange is the definitive solution for managing oil and coolant paths during fabrication.

Radiator Return Pipe - B58

T#:545300

Part#: 11538630023

Ships in 1-2 days

6% 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.

$ 309.99 USD

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6% 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.

$ 309.99 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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Thermostat O-ring

T#:526204

Part#: 11538658572

In Stock

$ 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.

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