Brand STORY SCITOO will check every product before sending out to make sure you have the best quality product and the best shopping experience. if you have any questions, please let us know.For mOE 512253,712253,30639ore effectively help, you'd better tell us your car make/ model and show the issue by pictures . COMPATIBLE VEHICLES 2014-2017 Jeep Cherokee OE 513349,68141123AB,68141123AC bearing assembly For more modles,pls enter the compatibility chart at the top left corner of listing. HIGH PURITY OF MATERIALS SCITOO are strict with the chemical composition of the shaft wheel steel, the content and type of non-metallic inclusions,the granularity, type and distribution of carbide, decar-urization and the other. STRONG WEAR RESISTANCE The hub unit with excellent wear resistance coating material has strong wear resistance, hardness, rust resistance and processing performance. HIGH STABILITY The cold rolling process is adopted to make the material structure more compact and improve the fatigue resistance and stability of the material. WITHOUT ABNORMAL NOISE Advanced technology forging, effectively reduce noise, stability When to replace the wheel hub and bearing? Uneven or abnormal tire wear Damaged or worn suspension components, improper inflation, misalignment or tire selection can lead to abnormal tire wear. Meanwhile, excessive looseness or bearing wear could lead to abnormal tire wear, Then car deviates its course Bearing overload Typically, bearings in a vehicle have to deal with radial and thrust loading. If the vehicle overload, it may be returned Rumbling, humming or growling If it is related to the bearings, you often hear the vibration or noise while driving straight, and increases when turning the wheel just slightly to either direction. ABS failure Which can be either external or internal of the hub or bearing assembly HOW TO INSTALL WHEEL HUB AND BEARING? 1.Guide new module onto CV shaft and into knuckle. (Align carefully or premature failure may result!) Before completing installation, attach ABS connector (if so equipped) and check with key on to ensure vehicle is reading a correct signal from the sensor2.Torque hub mounting bolts (steering knuckle to module flange) to manufacturer’s specifications, using appropriate torque wrench3.Reassemble brake rotor and caliper.4.Torque axle nut to manufacturer’s specifications. Do so while vehicle is raised and hub assembly is unloaded. Replace with new axle nut. Do NOT use an impact wrench. 5.Replace tire/wheel on vehicle. Lower vehicle to ground and torque lug nuts to specification, using a torque wrenchInstallation