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What is it?
- The thermostat is a valve that goes between the engine and the radiator. It's purpose is to keep the engine at the proper operating temperature. When the engine gets too hot, the thermostat opens up and lets the engine coolant flow through the radiator, where it cools off. When the engine is too cool, the thermostat closes and stops the coolant from flowing through the radiator, so the engine heats back up.
- Coolant thermostat housing assembly regulates the flow of the coolant going through the radiator to keep the engine in its stable operating temperature preventing it from over heating. Therefore, making it a critical component in the vehicle as failure to replace may damage the engine and other critical parts due to overheating which can leave you stranded on the road. This housing also includes sensor for a complete replacement.
Customers can find the product you need accurately according to the OE part number. This is a compatible replacement part manufactured our factory. Associated vehicle models and part numbers are used in this listing only to identify the vehicles this fits.
Replacement Part Number:
1430872; 143-0872; 17111437362; 17 11 1 437 362.
For exact years and models, please check compatibility.
2000 BMW 323Ci ; 1999-2000 BMW 323i
2001-2005 BMW 325Ci ; 2001-2005 BMW 325Xi
2001-2005 BMW 325i ; 2000 BMW 328Ci
1999-2000 BMW 328i ; 2001-2005 BMW 330Ci
2001-2005 BMW 330Xi ; 2001-2005 BMW 330i
2004-2006 BMW X3 ; 2001-2006 MW X5 L6 3.0L
2003 BMW Z4 L6 3.0L ; 2007 BMW Z4 L6 3.0L
All models with Automatic Transmission Oil Cooler Thermostat
How to replace the thermostat?
STEP 1: REMOVING THE RADIATOR FAN AND SHROUD
Disconnect the negative battery cable by loosening the 10mm nut; Remove the air collector push pin retainers; Remove the air collector; Disconnect the two electrical connectors on the passenger side of the fan shroud; Remove the T25 screw from the passenger side corner of the fan shroud; Remove the push pin retainer from the driver side corner of the fan shroud; Loosen the radiator fan clutch using a fan clutch tool; The fan clutch is reverse threaded; Remove the fan and fan shroud.
STEP 2: REMOVING THE AIR FILTER BOX
Disconnect the MAF electrical connector; Loosen the air filter box hose clamp; Disconnect the air tube from the air filter box; Release the air filter box lever latches; Remove the air filter box lid; Remove the air filter; Remove the two 10 mm bolts securing the air filter box; Disconnect the wiring from the retaining tab; Remove the air filter box.
Andy
2025-08-21 16:08:40
If you are doing a full tank replacement thus part will fit fine if not buying a OEM part. Matches fine to aftermarket units without leaks. Clicks in pretty tight on them kinda loose on OEM tank.Will recommend if using aftermarket parts
Edwin l.
2025-08-11 11:15:41
Arrive on time
Charlie Huang
2025-07-04 17:18:04
I don't know why there are so many negative reviews on this, maybe they just had some bad luck. For me this product is great, and it's been 2 months I've been having 0 issue with it. I drive my 2003 e46 325i every workday for 30 miles.I have a long road trip this weekend, will see if it fails on me.
leadfoot46
2025-06-06 16:08:01
Worked for about 6 months.
John Engel
2025-06-04 13:52:41
Works just like the OEM one
Hashim Brown
2025-04-11 11:49:37
While replacing my entire cooling system, I test drove my car twice. This was the second test, and the thermostat molded and popped at around 230°F, causing smoke to come out of the engine bay from the coolant ofc. In my picture, you can see where it molded along the plastic. Don't get this one if you're planning to use it as a daily. You won't make it through day 1.
Becca
2025-01-17 10:24:59
Installed this item to my car and it cracked after two days the car stop in the middle of the high way! Almost cost my life! Terrible product.
Jackie Francisco
2025-01-16 09:15:30
just needed some lubribration.
Migue N
2025-01-14 16:03:45
El sensor para BMW si resultó satisfactorio
Bench20
2025-01-13 18:02:49
Good item
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