Mosselman Oil Thermostat S55

Mosselman Turbo Systems is a Dutch manufacturer of high-quality performance parts designed specifically for use in BMW and MINI cars. Mosselman has been in the tuning business for over 40 years and the vast majority of their products has been designed, tested and manufactured in-house. If you own a BMW or MINI, you can bet your bottom dollar Mosselman have the parts you need to make it go faster.
$709.00

Product Information

THE NEXT LEVEL OF TEMPERATURE CONTROL

The N54, N55 and S55 engines are no strangers to oil cooling problems, that’s why we recommend installing the MSL Oil Thermostat, especially for cars that are tuned. The standard oil temperature will reach around 120°C (250°F) with a normal driving style. The MSL Oil Thermostat will open at a lower temperature than the standard oil thermostat (at 85°C / 185°F) and will keep the temperature stable between 95 and 105°C (200 and 220°F), 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 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.

Installation Instructions

Suitable for F87 M2 Competition Coupe, F80 M3 Sedan, F82 M4 Coupe and F83 M4 Convertible (including Competition, CS and GTS models). Also compatible with F30 ActiveHybrid 3.


MSL OIL THERMOSTAT

A highly recommended upgrade for N54, N55 and S55 engines.

  • 20°C Lower Than Stock
    Operating temperature 20°C lower than stock.
     
  • Rock Solid Housing
    CNC machined housing.
     
  • Real Thermostat
    Equipped with a real thermostat, not an always open solution (for use in hot and cold climates).
     
  • Quick Installation
    Takes only 30 minutes to install.


The Thermostat is plug-and-play and made out of a solid block of high-grade aluminium at Mosselman's 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.

Additionally to the thermostat, Mosselman have oil cooler kits for the 1-Series E8x and the 3-Series E9x. We advise the Oil Cooler Kit for cars that use the full performance of the car during track use. The kits are available as single or twin cooler kits. The single cooler kit replaces the OEM cooler on the right side of the car, the twin kit will add an extra cooler on the left side of the car.


EXPERT'S ADVICE:

"The S55 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 aluminium 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."

MARK HENDRIKX - AUTOMOTIVE ENGINEER AT MOSSELMAN


FREQUENTLY ASKED QUESTIONS


Does the MSL Oil Thermostat have a real thermostat?
Yes, 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.

Do I need new gaskets for the installation?
Yes, we highly recommend replacing the gasket and 0-rings to prevent the thermostat from leaking. We have an installation kit available, it includes 2 x O-ring for the oil hose and 1x rubber oil filter housing gasket. We advise to add it to your order.

Installation Time
The thermostat is plug-and-play, which means that you don't have to make modifications to install the thermostat. Just remove the old one and replace it with our MLS Oil Thermostat. The installation time will be approximately 30 minutes.


Models
  • 2 Series / F87 M2 (2016-2021) / M2 Competition
  • 2 Series / F87 M2 (2016-2021) / M2 CS
  • 3 Series / F30 / F31 / F34 (2012-2018) / ActiveHybrid 3
  • 3 Series / F80 M3 (2014-2019) / M3
  • 3 Series / F80 M3 (2014-2019) / M3 Competition
  • 3 Series / F80 M3 (2014-2019) / M3 CS
  • 4 Series / F82 / F83 (2014-2019) / M4
  • 4 Series / F82 / F83 (2014-2019) / M4 Competition
  • 4 Series / F82 / F83 (2014-2019) / M4 CS
  • 4 Series / F82 / F83 (2014-2019) / M4 GTS

Be the first to write a review

Thanks for submitting your review!
Please note, all reviews must be approved before they are published.
Your Rating
First Name
Last Name
Email Address
Keep me updated with news and exclusive offers
Location
Review Title
Review Comment
Submit Review
Free shipping on orders over $1,000*
Local warranty & support
30 day money back guarantee
100% Secure checkout

My first dealing with Southern BM was a pleasant one. I had some springs and shocks installed and Sean was a delight to deal with. Knowledgeable, helpful and offered solutions when not everything went to plan. I would happily recommend them.

Errol Frank
Google Review

Excellent service at reasonable prices. The shop is very nice too, you almost feel like you're at BMW.

Charles Tey
Facebook Review

Great blokes down there, Eric is great for those chinese speaking customers looking for either some general quality servicing or even higher end modifications. Good team of humble and honest people, will definitely be back!

Andy Liu
Facebook Review

Fantastic customer service from the team at Southern BM. Expertly repaired my 2011 323i and did so without the attitude and excessive cost of a dealer. Thank you and I will be back for all future servicing.

Glenn Corey
Facebook Review

Touched base with Sean to do some coding work on my F85 X5M. Not only was he a whiz with the tech stuff, knowing his way around without any difficulty. Very rare to find someone like Sean - I happily rate and recommend this business for anyone.

Samuel David
Google Review
Watch the video

Stay up to date

You've just been sent an email to confirm your email address. Please click on the link in this email to complete your subscription.
Subscribe

We respect your privacy − read our policy.

© 2024 SouthernBM. All Rights Reserved.

Please sign in

Email Address
Password
Log In Forgot your password?
Don't have an account? Register

Stay up to date

You've just been sent an email to confirm your email address. Please click on the link in this email to complete your subscription.
First Name
Last Name
Email Address
Subscribe

We respect your privacy − read our policy.

Stock Availability

In Stock Items marked GREEN or 'In Stock' are currently in stock at SouthernBM. Most orders are shipped within 1-2 business days. ‘Click & Collect’ orders are usually ready within 1-2 hours during normal trading hours.
Available to Order Items marked YELLOW or ‘Available To Order’ are not currently in stock at SouthernBM, and need to be ordered in from the supplier. Please note the expected delivery time before placing an order.
No Longer Available Items marked RED or ‘No Longer Available’ have been discontinued and are no longer available to be ordered. Please contact us for an alternative.
All orders are dispatched from our Melbourne warehouse. Most orders are delivered within 1-3 business days Australia-wide after dispatch. The expected delivery time on all 'Available To Order' items is only an estimate and wait times may vary from those provided. Please contact us if you have any questions.

All items listed on our website are not available for in store pick up without prior purchase. Please use the ‘Click & Collect’ option at checkout and we will let you know as soon as your order is ready.

Make a booking

Thanks! We've received your request. We will be in touch within 1 business day to confirm your booking. If you do not see the email in this time, please check your JUNK/SPAM folder.
Preferred Date
Drop Off Time
Vehicle
Registration #
First Name
Last Name
Email Address
Keep me updated with news and exclusive offers
Phone
How can we help?
Send Request