BMW Auxiliary Coolant Reservoir Cap Color:Black which contributes to better combustion

which contributes to better combustion

5" factory plastic piping to and from the intercooler

Fuel economy during normal driving is unchanged and it's compatible with all driving modes including towing

If this is a concern for you checkout our Stage 3 fuel pump upgrade kits that retain the stock LPFP and add a secondary pump

Bmw 540i 2017 to 2023

BMW Auxiliary Coolant Reservoir Cap Color:Black which contributes to better combustionThe Precision Raceworks Auxiliary 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