When your BMW’s build is serious about performance, using components that support reliability under stress is vital. Mosselman offers a focused line of upgrades—especially for turbo and high-output BMW platforms—that address real weak points and help maintain strength under load.

 What Mosselman Offers

Here are some genuine Mosselman products:

• Oil Thermostats for N54/N55/S55 Engines
  Mosselman offers oil thermostats that open at 85°C instead of the stock ~105°C, helping reduce oil temperature by about 20°C on the N55 and S55 engines. 

• Oil Cooler Kits
  For certain BMW E-series (e.g., E90/E92/E93 335i) and 1M/135i platforms, Mosselman provides single and twin oil cooler kits to improve oil thermal capacity and help high performance setups. 

• Crank Hub Upgrade for S55 Engines
  They also list a crank hub upgrade for the S55 engine (used in M2 Competition, M3/M4) — a component aimed at robustness in high-load conditions. 

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 Why These Upgrades Matter

• Lower Operating Temperature = Better Reliability
  By reducing oil temperature by around 20 °C through thermostats and cooler kits, you reduce risk of heat-related degradation and maintain performance under hard use. 

• Components Built for Specific Engines
  Mosselman lists parts by engine code (N54, N55, S55) and platform (e.g., BMW M2 Competition, M3/M4), which ensures compatibility and fitment confidence. 

• Supporting the Build, Not Just Cosmetic
  These aren’t just aesthetic upgrades—they address foundational performance concerns (oil temps, crank hub strength) which matter when you push things.

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 Things to Consider

• Check Compatibility Carefully
  Since Mosselman parts are engine-specific (N54, N55, S55 etc), make sure your chassis/year/engine match the listed application. 

• Installation Requirements
  Some parts (thermostats, oil cooler kits) may require some moderate mechanical skill and attention to sealing/couplers.

• Integration with Other Upgrades
  If you’re building high output, pairing these reliability upgrades with other flow/cooling/tuning mods can make the most sense.

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If you want to browse the full Mosselman collection and find the exact part for your BMW build, check their brand page here: https://x-ph.com/mosselman/