SKU: 74356521228

Mosselman MSL OIL THERMOSTAT for BMW N54 Engines (also N55 E-series)

Sale price$171.00 Regular price$190.00
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Ships within 48 hours · Estimated delivery Sep 7 - Sep 12

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Description

Mosselman MSL OIL THERMOSTAT for BMW N54 Engines (also N55 E-series)Pre special order The N54 engine is no stranger to oil cooling problems, thats why we recommend installing the MSL Oil Thermostat. The standard oil thermostat will reach around 120 degrees Celsius with a normal driving style. The MSL Oil Thermostat will open at a lower temperature than the standard oil thermostat (at 85 degrees Celsius) and will keep the temperature stable between 95 and 105 degrees Celsius, depending on the car model. Installing the

Pre/special order

The N54 engine is no stranger to oil cooling problems, that’s why we recommend installing the MSL Oil Thermostat. The standard oil thermostat will reach around 120 degrees Celsius with a normal driving style. The MSL Oil Thermostat will open at a lower temperature than the standard oil thermostat (at 85 degrees Celsius) and will keep the temperature stable between 95 and 105 degrees Celsius, depending on the car model. Installing the MSL thermostat ensures a cooler oil temperature which will result in more stable performance, but above all this improves the reliability of the engine. It is recommended to install the thermostat, especially for cars that are tuned.


The Thermostat is plug-and-play and made out of a solid block of high-grade aluminum at our own facility. It is equipped with a real thermostat, not an always open solution. The oil will still reach the operating temperature at the same time as a stock thermostat.

Note: The Oil Thermostat Installation kit prevents the Oil Thermostat from leaking and is highly recommended when installing the MSL Oil Thermostat. The kit includes 2 x O-ring for the oil hose and 1x rubber oil filter housing gasket. We advise to add it to your order. 

MSL OIL THERMOSTAT

The next level of temperature control

  • 20°C/68F Lower Than Stock
    Operating temperature 20°C/68F lower than stock.
     
  • Real Thermostat
    Equipped with a real thermostat, not an always open solution. (for use in hot and cold climates)
     
  • Rock Solid Housing
    Made out of a solid block of high-grade aluminum.
     
  • Quick Installation
    Takes only 30 minutes to install.

ABOUT MOSSELMAN

Mosselman Turbo Systems is a Dutch manufacturer of high-quality performance parts designed specifically for use in BMW and Mini cars. If you own a BMW or a Mini, you can bet your bottom dollar we have the parts you need to make it go faster. Whether it’s intercoolers, turbochargers, downpipes, engine management systems or even full exhausts systems, Mosselman Turbo Systems has a wide selection of carefully made performance parts for your car. 

Furthermore, Mosselman Turbo Systems has been in the tuning business for over 40 years and the vast majority of our products has been designed, tested and manufactured in-house. These are our products and we stand by them.

You can Download the Installation Manual here.

Compatability MSL Oil Thermostat N54 Type Engine Note
BMW 135i E82 N54  
BMW 135i E82 N55 This is an N55 engine, but it needs the N54 thermostat to make it fit into the car!
BMW 1M E82 N54  
BMW 335i E90 N54  
BMW 335i E90 N55 This is an N55 engine, but it needs the N54 thermostat to make it fit into the car!
BMW Z4 35i E89 N54  
BMW Z4 LCI 35i E89 N54  
BMW Z4 35is E89 N54  
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 74356521228

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4.6 ★★★★★
Based on 26 reviews
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Verified Purchase
Dinopen
Belleville, US
★★★★★ 5
Great Product!
Size: 12 Fl Oz (Pack of 1)
It's Honda genuine; do I have to say more? Can't find it at any regular auto part stores.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026
T
Verified Purchase
thomas j. hoyle
Carnegie, US
★★★★★ 4
For 99 Integra
Size: 12 Fl Oz (Pack of 1)
I have not seen this one that was sent in a black bottle, anywhere else. It does state for Honda & Acura. I have a 1999 Acura Integra and was using the (Honda) genuine power steering fluid in the silver bottle with a blue cap. So, just taking off one star because i haven't used it yet. Seals seeping on rack & pinion, so using just to top it off every now & then.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 5, 2025
C
Verified Purchase
Cesar Zarate
Lexington, US
★★★★★ 5
Trusty OEM Honda power steering fluid.
Size: 12 Fl Oz (Pack of 1)
Just as described, original OEM trusty Honda power steering fluid.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026
M
Verified Purchase
Mr. Cool
Lexington, US
★★★★★ 5
Power steering clean
Size: 12 Fl Oz (Pack of 1)
Worked well for my Honda. Changed out the old fluid which was black. Now it's clean and yellow. Car drives a lot better steering. 5 stars.
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Reviewed in the United States on February 20, 2026
R
Verified Purchase
R.C.
Alexandria, US
★★★★★ 5
The real stuff
Size: 12 Fl Oz (Pack of 1)
Fine product at a great price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 23, 2026

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