Description
Mosselman Oil Thermostat S55, Blue
The Mosselman S55 Oil Thermostat in Blue is a performance oil-temperature management upgrade for BMW S55 engines. Its thermostatic valve is designed to begin oil-cooler circulation earlier than the factory thermostat while retaining controlled warm-up. This can help reduce excessive oil temperatures during spirited driving and repeated high-load operation.
CHOOSE YOUR CONFIGURATION
Select your version. Each option opens its own product page; confirm fitment before ordering.
Key features
- Earlier oil cooler activation than the original BMW thermostat.
- Temperature-controlled oil flow, unlike a permanently open bypass.
- Precision-machined aluminium housing with blue finish.
- Designed for compatible BMW S55 oil-filter-housing assemblies.
- Suitable for performance road builds and demanding driving conditions.
Specifications
| Brand | Mosselman Turbo Systems |
|---|---|
| Engine | BMW S55 |
| Finish | Blue |
| Component | Oil thermostat |
| TSHK SKU | TSHK-MSL-023 |
BMW fitment
Compatible BMW S55 M2 Competition, M3 and M4 applications, subject to production year and oil filter housing. Always check the exact vehicle and thermostat configuration before ordering.
Installation notes
This is a thermostat component, not a complete oil cooler kit. Inspect sealing surfaces and use appropriate replacement seals during installation. Actual oil temperature changes depend on the cooling system, ambient conditions and driving style.
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