This is a SKF Wheel Bearing Kit designed for the rear axle of a LEXUS LS400 4.0 from 1994 to 2000 with a 1UZ-FE engine. The kit includes an SKF bearing, SKF circlip, two SKF shaft seals, and an SKF split pin. Key specifications include a width of 50 mm (or 45/50 mm), an outer diameter of 80 mm, and an inner diameter of 43 mm. Wheel bearings support the wheel and allow it to spin freely, and are susceptible to heat and lack of lubrication. The part number for this kit is VKBA3215. It is sold individually.