BMW Thermostats for BMW G01 X3 xDrive30i B46 2.0L

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BMW thermostats are known to fail, but luckily they typically fail wide open - meaning that your car can still cool. We offer thermostats from various OE suppliers we trust along with upgraded motorsport specific thermostats where applicable to make sure your BMW stays cool on track.

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Thermostat - B48

10X Entries Into Our F80 M3 Sweepstakes
For vehicles with the Gen1 B48/B46 only - not compatible with the later Gen2 B48 (TU) engines

T#:23648673

Part#: 11537644811

In Stock

Sale - Save 15% $ 223.99

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

$ 190.39 USD

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Sale - Save 15%

$ 223.99

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

$ 190.39 USD

Add to Wish List

Coolant Thermostat Assembly

For models with the B48D, B46D, or B46X engines only - Not for the earlier Gen1 or late...

10X Entries Into Our F80 M3 Sweepstakes

T#:50311454

Part#: 11538642560

In Stock

Sale - Save 15% $ 364.99

This product was last offered at the strikethrough price on
09-16-2026

$ 310.24 USD

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Qty

Sale - Save 15%

$ 364.99

This product was last offered at the strikethrough price on
09-16-2026

$ 310.24 USD

Add to Wish List

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

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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BMW Thermostats for BMW G01 X3 xDrive30i B46 2.0L

Thermostat - B48

Coolant Thermostat Assembly

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

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