E85 thermostat

Tkghali

Member
Working on replacing the thermostat, the new thermostat does not fit the lower radiator hose even though the size looks identical to the old one. Have anyone had this problem ?
Thank you
 
Tkghali said:
Working on replacing the thermostat, the new thermostat does not fit the lower radiator hose even though the size looks identical to the old one. Have anyone had this problem ?
Thank you

Have you used a cheap, pattern part thermostat or the genuine BMW item. Despite what the entire Internet will tell you, they're not the same and won't be built to the same tolerances/opening or closing values. Rule of thumb, if it's a moving part, or it's electrical, always buy OEM.
 
mr nurburgring said:
No, never had this issue before, the clip is released to allow it to slide all the way home?

Yes the clip is out, the old part fits back in without a problem

Hey yeah the
 
eddiemunster said:
Tkghali said:
Working on replacing the thermostat, the new thermostat does not fit the lower radiator hose even though the size looks identical to the old one. Have anyone had this problem ?
Thank you

Have you used a cheap, pattern part thermostat or the genuine BMW item. Despite what the entire Internet will tell you, they're not the same and won't be built to the same tolerances/opening or closing values. Rule of thumb, if it's a moving part, or it's electrical, always buy OEM.
I got the part from advance auto part as I had the car apart and bmw dealer not an option atm, I read the reviews on the part no one else had the problem, could it be the hose is bad ?
 
What brand is it?

I can confirm that febi and wahler stats will fit ok as ive done 2 replacements using these. The febi failed after a year. The wahler is still doing good after a few months.

As eddiemunster suggests, if its a cheap non-oem part it will probably be crap.

Stick to oem or original bmw branded parts.
 
Tkghali said:
I got the part from advance auto part as I had the car apart and bmw dealer not an option atm, I read the reviews on the part no one else had the problem, could it be the hose is bad ?

I suspect the pattern part isn't right, tolerances will be far more slack on that than the original OEM BMW part; it only takes a mm or two, or a flange that's the wrong shape and a part won't fit properly.

Simple test is; is the original part OEM BMW, and, does it fit back into place properly? If the answer to both of those is "Yes" then you you know what your problem is.
 
I replaced my water pump, thermostat, pulleys and belts back in November '18. I fitted a Wahler thermostat and didn't have any issues at the time or any since :thumbsup: 20181110_153540.jpg
 
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