Thermostat Mahle or OEM BMW

Mahle is an OE supplier for bmw, go for it

I recently moved on from a 2016 X3 35i (N55) with a little over 100k miles on it. The only things to break on it were the thermostat and a control board for one of the headlight modules. When I replaced the thermostat I did the water pump as a precaution.

Mahle is the OE replacement for the thermostat, the Chrysler logo is on the part but sanded down. Autozone sells them with PT# TI23695 I just replaced mine last weekend.

My 535i with the 740d thermostat sits at 90-95 during normal use, even sat stable at 95c during 40c weather in traffic. When beating on it in the mountains got it up to 99 at like 28c ambient.

Mahle is an OEM supplier and is on stock in Amazon.

Thermostat and temp sensor were just replaced with OE Mahle/Behr. P0128 showed up after car didn’t get up to temp. Heat is slightly affected until reaches operating temp.

Last week changed the thermostat on my 1.9 tdi 66kW to a Mahle TX 15 87D (11€), it was fine for the first two days, then the temps started dropping again.

1st Mahle. The engine only reaches up to 65 degrees and it drops further if I drive under 2000RPMs on highway for example or turn on the heating.

car in winter cant even reach optimal temperature in idle, reaches optimal temperature only uphills on RPMS higher thatn 2500

I replaced the t-stat with a genuine part and again no luck.