[High-Quality Construction] Our Aluminum Thermostat Housing Assembly is made from premium materials, ensuring superior performance and durability. Its high tolerance design guarantees a precise fit, allowing you to effortlessly repair leaking thermostat housings and prevent engine overheating caused by thermostat failure. Thermostat Opening Temperature: 206.6 Deg. F / 97 °C [Replacement OEM Number] 11537509227 11531437040 11531436823 11530139877 33934 11534509763 324-58407 902-813 Z63001, 1430825, 14602, 1 53 0 139 877, 11 53 7 509 227, 11 53 1 437 040, 11 53 1 436 823, 432697D, 4326.97D, 11 53 4 509 763, 256101, TM1397 SK902813 1436823 1437040 7509227 1153013987705 1153143682300 1153143704010 1153750922710 V20-99-1258-1 V209912581 467185 [Easy Installation] Designed as a direct replacement for the original OE part, the thermostat housing assembly offers hassle-free installation. Simply remove the old unit and install our replacement with ease. No special tools or modifications are required, saving you time and effort [Reliable Performance] With its high sealing capability and exceptional reliability, our thermostat housing assembly provides long-lasting functionality. You can trust it to maintain optimal engine temperature and prevent any potential issues associated with thermostat malfunction. Say goodbye to overheating problems and enjoy a smooth driving experience [Satisfaction Guaranteed] We stand behind the quality of our products. To ensure your complete satisfaction, we offer a full 30-day money-back guarantee on all purchases. If you're not completely satisfied with our Aluminum Thermostat Housing Assembly, simply return it to us for a no-hassle refund or credit. Your satisfaction is our top priority Note: Please ensure compatibility with your vehicle's specific year, make and model before purchasing.

FITMENT：

For 1999-2000 BMW 323i 2.5L L6
For 2000-2000 BMW 323Ci 2.5L L6
For 2001-2006 BMW 325Ci 2.5L L6
For 2001-2005 BMW 325i 2.5L L6
For 2001-2005 BMW 325xi 2.5L L6
For 2000-2000 BMW 328Ci 2.8L L6
For 1999-2000 BMW 328i 2.8L L6
For 2001-2006 BMW 330Ci 3.0L L6
For 2001-2005 BMW 330i 3.0L L6
For 2001-2005 BMW 330xi 3.0L L6
For 2001-2005 BMW 525i 2.5L L6
For 1999-2000 BMW 528i 2.8L L6
For 2001-2005 BMW 530i 3.0L L6
For 2004-2005 BMW X3 2.5L L6
For 2004-2006 BMW X3 3.0L L6
For 1999-2002 BMW Z3 2.5L L6
For 1999-2000 BMW Z3 2.8L L6
For 2001-2002 BMW Z3 3.0L L6
For 2003-2005 BMW Z4 2.5L L6
For 2003-2005 BMW Z4 3.0L L6
For 2001-2006 BMW X5 3.0L L6