The Kenworth W900 1981 To 2018 Left Side Door Window Sill Plate is a reliable and practical solution for your Kenworth W900 model. Made from durable black plastic, this multi-piece configuration is designed to match the fit and appearance of the original equipment door sill. With easy installation and no special tools required, this door sill is a convenient choice. It includes 9 mounting holes and has been tested for accurate fit and function. Compatible with most Kenworth W900 models from 1981 to 2018, this door sill is designed for models with the Daylite door. Direct OE replacement numbers include Paccar K218-850 and R39-1137.