BMW E30 Engine and Cooling Upgrades for Performance and Track

Engine & Cooling

Your BMW 2.5L engine, from stock to wildly modified, will gain performance from the installation of proven performance parts. Don't let a weak spark plug wire lose the voltage needed to accurately ignite the fire that makes the power pulse. A performance engine uses all the available power across the full power band and when we increase power, we increase heat. A high-end build using the best internal components will not be very effective when your water temperature rises above 210°. A big motor (heat creator) needs an improved cooling and monitoring system to give the driver the information he needs to successfully finish this race. 

Water Temp Sensor Adapter for 30mm Hose
So you are building your top of the podium racecar and need to add a temperature sender to your radiator hose, the Mishimoto Water Temperature Sensor Adapter is what you need. 
aFe Pro5R Air Filter BMW E30 1986-1991 (no M3)
Perfect drop in and class legal for your your Spec E30, the aFe aFe 30-10047 is the highest flow air filter we are told. The Pro5R drop-in panel filters are a direct replacement for your stock E30 3-Series (9/'85+), E36 318 (-2/'94), E28 528e (9/'85+), E32 750, E34 525, or E31 850 air filter. Next time just don't replace your air filter, upgrade.