BMW Engine Coolant Reservoir Cap X3 (F25) 5 LPM): Our Stage 2

5 LPM): Our Stage 2

Anodized Black Lightweight Aluminum

5psia : 640lph

you’ll finally hear the turbos spool the way they were meant to

For optimal results

BMW Engine Coolant Reservoir Cap X3 (F25) 5 LPM): Our Stage 2The Precision Raceworks Engine Coolant Reservoir Cap is a functional and stunningly stylish way to add a nice touch to any engine bay! This cap come in three color options so there is always a color that will work for you! Black with Billet, Black with Blue, and the Stealth series (all black). Many people don't realize it but the OEM caps have a pressure release valve built into them. Often times aftermarket companies don't know this either or just