【Vehicle Fitment】 Our thermostat housing is fit for BMW 325i 325xi 330i 330xi 525i 530i 2001-2005,fit for BMW 323Ci 2.5L 2000 ,fit for BMW 323i 2.5L 1999-2000,fit for BMW 325Ci 2.5L 2001-2006,fit for BMW X3 2.5L 2004-2005,fit for BMW X3 3.0L 2004-2006,fit for BMW X5 3.0L 2001-2006,fit for BMW Z3 2.5L 1999-2002,fit for BMW Z3 2.8L 1999-2000,fit for BMW Z3 3.0L 2001-2002,fit for BMW Z4 2.5L 2003-2005,fit for BMW Z4 3.0L 2003-2005 【Reference Number】This housing assembly Reference Number: 11531437040, 11531436823, 11537509227, 11530139877, 1 53 0 139 877, 11 53 7 509 227, 11 53 1 437 040, 11 53 1 436 823.Other Part Number:1430825, 14602, 256101, 432697D,4326.97D 【OEM-Grade Quality】 The thermostat housing assembly is Manufactured to the highest standards, our thermostat housing is made from durable materials that resist corrosion, heat, and pressure, providing long-lasting performance. Comes with all necessary components, including gaskets and seals, for a hassle-free installation. 【Product Specifications】①Thermostat Opening Temperature: 203 Deg. F ②Flange Length: 7.8 in ③Flange Width: 1.28 in ④Thermostat Included: with 1x Thermostat ⑤Grade Type: Regular ⑥Material: Plastic⑦Seal Included: with 1x O-ring 【Package Includes】1*Upgrade Engine Coolant Thermostat,1*Rubber, 1*Seal Ring, 1*Coolant Temperature Sensor. 1