The MSL thermostat ensures a cooler oil temperature which will result in more stable performance
The MSL thermostat ensures a cooler oil temperature which will result in more stable performance
Upgrade to a much more durable connection from your cylinder head to your thermostat! Commonly referred to as a "Mickey Mouse" flange/adapter.
10X Entries Into Our F80 M3 Sweepstakes
This product was last offered at the strikethrough price on
06-13-2026
Replaces the stock plastic flange found in the thermostat to cylinder head coolant hose that is known to fail
Serious engine oil cooling for the most demanding engines
For custom applications only. Not a direct bolt on.
Reduces coolant temperatures by as much as 30*F
Serious engine oil cooling for the most demanding engines
For custom applications only. Not a direct bolt on.
The last expansion tank you'll ever need! Upgrade to durable aluminum construction and leave failure-prone plastic behind.
10X Entries Into Our F80 M3 Sweepstakes
Upgrading cooling for your engine oil
For custom applications only. Not a direct bolt on.
Serious engine oil cooling for the most demanding engines
For custom applications only. Not a direct bolt on.
Serious engine oil cooling for the most demanding engines
For custom applications only. Not a direct bolt on.
The MSL thermostat ensures a cooler oil temperature which will result in more stable performance
Serious engine oil cooling for the most demanding engines
This product was last offered at the strikethrough price on
05-06-2026
Serious engine oil cooling for the most demanding engines
Pairs with all types of coolant to increase heat transfer and decrease engine temps.
Serious engine oil cooling for the most demanding engines
For custom applications only. Not a direct bolt on.
High performance coolant conditioner