LANDNOVO Heavy-Duty Engine Coolant Thermostat Assembly 11537642854 for BMW B58 3.0L 340i 540i 740i X3 X5 Supra A90 | Direct OE Replacement
LANDNOVO Heavy-Duty Engine Coolant Thermostat Assembly 11537642854 for BMW B58 3.0L 340i 540i 740i X3 X5 Supra A90 | Direct OE Replacement
Eliminate chronic coolant seepage, errant temperature sensor codes, and dangerous engine overheating with the LANDNOVO Heavy-Duty Engine Coolant Thermostat Assembly (Part No. 11537642854 / 11-53-7-642-854). Engineered specifically for BMW B58 3.0L Turbocharged Inline-6 engine platforms (G20 M340i, G30 540i, G05 X5, and GR Supra A90), this electronic thermostat restores precision thermal regulation, reinforced structural sealing, and OE response rates at an accessible workshop-direct price.
Why Does the Factory B58 Thermostat Fail?
The LANDNOVO Engineered Solution
- Reinforced High-Temp Composite Housing: Constructed from advanced heat-stabilized polymers designed to resist cracking, flange warping, and pressure-induced coolant leaks under aggressive driving conditions.
- Precision Calibrated Electronic Actuation: Built with automotive-grade internal wax actuators and integrated electrical heating elements for pinpoint coolant temperature regulation matching factory DME parameters.
- Pre-Installed High-Temperature Viton (FKM) Seals: Outfitted with premium fluorocarbon gaskets that resist chemical degradation from modern ethylene glycol coolants and maintain long-term sealing memory.
- 100% Direct Plug-and-Play Fitment: Manufactured strictly to factory BMW dimensions, matching coolant inlet/outlet hose ports and 2-pin electrical harness plugs with zero wiring or bracket modifications.
OEM Cross-Reference Part Numbers
| OEM Interchange Numbers | 11537642854, 11 53 7 642 854, 11-53-7-642-854, 11538685984, 11538644558 |
|---|---|
| Component Type | Engine Coolant Thermostat with Integrated Housing & Sensor Port |
| Actuation Type | 12V Electronic / Map-Controlled Thermostat |
| Engine Platform | BMW B58 (3.0L Turbocharged Inline-6 Petrol) |
Comprehensive Vehicle Fitment Guide
| Model Years | Make | Model & Chassis | Engine & Trim Details |
|---|---|---|---|
| 2016 – 2019 | BMW | 3 Series (F30 / F31 / F34) | 340i, 340i xDrive (B58 3.0L) |
| 2019 – 2024 | BMW | 3 Series (G20) | M340i, M340i xDrive (B58 3.0L) |
| 2017 – 2023 | BMW | 5 Series (G30 / G31) | 540i, 540i xDrive (B58 3.0L) |
| 2016 – 2022 | BMW | 7 Series (G11 / G12) | 740i, 740Li xDrive (B58 3.0L) |
| 2018 – 2024 | BMW | X3 (G01) & X4 (G02) | M40i (B58 3.0L) |
| 2019 – 2024 | BMW | X5 (G05) & X6 (G06) | xDrive40i, sDrive40i (B58 3.0L) |
| 2019 – 2024 | Toyota | GR Supra (A90 / DB42) | 3.0L Turbo Inline-6 (B58 Engine) |
Workshop Installation Advisory
Technician Note: When replacing the thermostat on B58 engines, thoroughly clean the engine block mounting surface to remove corrosion and residual gasket scale. Lubricate the new seal with fresh coolant prior to seating. After installation, execute the electronic water pump automated bleeding sequence using a scan tool to purge air locks from the cylinder block before test driving.
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Product features
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Materials and care
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Merchandising tips
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