BMW Thermostats for BMW 5 Series G30 (2017+)

Clear BMW chassis

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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Water Pump & Thermostat Kit - Gen 1 B46 2.0L

For model years 2017-2019

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

T#:35863149

Part#: 11518638026TKT

In Stock

Sale - Save 5% $ 731.99

This product was last offered at the strikethrough price on
06-30-2026

$ 696.75 USD

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Sale - Save 5%

$ 731.99

This product was last offered at the strikethrough price on
06-30-2026

$ 696.75 USD

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BMW's cooling system has long been a known weak spot, with the water pump and thermostat being two of the most common trouble areas. This remains true even in the latest B-Series engines found in 2016 and newer BMW models. This kit includes a brand-new OEM Pierburg water pump, a Bremmen thermostat (now referred to as a Heat Management Module), and one gallon of BMW's G48 coolant concentrate (enough to make two gallons of 50/50 coolant). Avoid spending thousands at the dealership or over $600 on Genuine BMW parts! These components can be replaced with high-quality OEM parts in just an afternoon using basic hand tools.

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Electronic Thermostat And Coolant Distribution Module

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

T#:26538308

Part#: 11537642854

In Stock

Sale - Save 5% $ 308.99

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

$ 292.63 USD

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Sale - Save 5%

$ 308.99

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

$ 292.63 USD

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Thermostat - B48

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

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

For vehicles with the later B58C or B58D engine - Will not fit the B58A early engine

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

T#:617366

Part#: 11538642559

In Stock

Sale - Save 5% $ 443.99

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

$ 421.60 USD

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Sale - Save 5%

$ 443.99

This product was last offered at the strikethrough price on
06-25-2026

$ 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.

Genuine BMW - Thermostat with housing and gasket - 11537644811 ...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with the Gen1 B48/B46 only - not compatible with the later Gen2 B48 (TU) engines

T#:539226

Part#: 11537644811

In Stock

Sale - Save 5% $ 544.99

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

$ 517.48 USD

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Sale - Save 5%

$ 544.99

This product was last offered at the strikethrough price on
06-25-2026

$ 517.48 USD

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11537644811 - Thermostat with housing and gasket. The thermostat controls the flow of coolant based on temperatures in the engine. This is a crucial component to your cooling system and making sure your car is operating properly.

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Junction Heat Hose - 11538606278

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

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

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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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