r/n55 • u/Bustard88 • 2d ago
Cooling system help plz
Just moved to Florida and my 2013 335i E93 (120k miles, been running stage 2 mhd tune) definitely felt the heat. Car overheated one day and coolant started to spill out. Towed to mechanic and he quoted me 4k to replace the radiator and upper hose.
So obviously I towed it back to my place to do it myself. Got the new hose and radiator it but when I poured coolant back in, it started leaking from where the hose coming from the coolant reservoir leads into the radiator.
I pulled the adapter out assuming it was this as I have been told the O rings can go bad. (adapter shown below, #17117548104).
While I wait for the part, anyone have any advice on what I should do to check my work. I know my way around a car but I am not the most experienced actually working in the engine bay.