MEYLE Thermostat – 328 228 0008 (BMW M57N / M57N2)

Description

MEYLE 328 228 0008 is an OE-quality main engine thermostat for BMW M57N and M57N2 diesel engines.

The thermostat regulates coolant flow through the engine, helping maintain the correct operating temperature for optimal performance, fuel economy and emissions control.

A faulty thermostat is one of the most common causes of low coolant temperature on M57 engines and can lead to poor fuel economy, weak cabin heating and DPF regeneration issues.

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Fits BMW Engines

✔️ M57N
✔️ M57N2

Engine Variants

✔️ M57D25TU2
✔️ M57D30TU
✔️ M57D30TU2

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Common Models

• E60 / E61 525d
• E60 / E61 530d
• E60 / E61 535d
• E90 / E91 / E92 325d
• E90 / E91 / E92 330d
• E90 / E92 335d
• E65 / E66 730d
• E70 X5 3.0d / 3.5d
• E71 X6 35d
• E83 X3 3.0d

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Part Numbers

• MEYLE: 328 228 0008
• BMW OE: 11517805811

Cross References:

• MAHLE / BEHR: Thermostat equivalent
• BMW: 11 51 7 805 811

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What's Included

✔️ 1x Thermostat assembly

⚠️ Housing configuration may vary by manufacturer batch.

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Important

❗ Main engine thermostat
❗ Not EGR thermostat
❗ Direct replacement for OE 11517805811
❗ Recommended when coolant temperature stays below operating range

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Common Symptoms

• Engine running cold
• Coolant temperature below 88°C
• Poor fuel economy
• Weak cabin heater
• DPF regeneration issues
• Coolant thermostat fault codes

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Fitment Summary

✔️ M57N
✔️ M57N2
✔️ BMW 2.5D & 3.0D diesel engines
✔️ OE BMW 11517805811
❌ Not M57 (pre-TU)
❌ Not N57 engines