Kit Includes: 1x Front Left Side Complete Strut Assembly - 172981 1x Front Right Side Complete Strut Assembly - 172980 OE: 172980, 172981, SR4155, SR4154, 182980, 182981, 1332366R, 1332366L, LS5494491R, LS5494491L, 817143, 817144, G57372, G57373, 2701480315 Fitment: Toyota Sienna 2004 2005 2006 When to Replace Shock Absorber: 1. When braking the front end of the car more than up and down vibration. 2. The steering wheel does not return to the right or slow. 3. Serious side slip when the vehicle is traveling. 4. There is no temperature on the surface of the damper after driving. 5. The braking distance increases when the speed reaches 100KM/H. 6. When there is oil leakage, strange noise, deflection wear, and performance degradation in the appearance of the shock absorber . About AUTOSITY AUTOSITY is a professional manufacturer specializing in aftermarket auto parts. AUTOSITY manufactures complete struts assembly and shock absorber to provide you with quality and performance you can trust. With our advanced technology and excellent quality, you can trust us completely. Any component has a life expectancy of the shock absorber is no exception, according to the experiment, the car every driving 1 km, the shock absorber will produce about 1100 times vibration, when your car driving 20,000 kilometers, please check your shock absorber; driving 80,000 kilometers need to replace the shock absorber; in order to you and your family's safety, 100,000 kilometers and above, please replace it.