New Teenage Mutant Ninja Turtles Series Trailer Officially Reveals R51793 Rod Fits Case 450 after s n 3050800. One New Aftermarket Replacement Track Adjuster Rod Fits Case Crawler Dozers This track adjuster rod is a critical undercarriage component used in the track tensioning system on Fits Case crawler dozers and crawler loaders. It keeps proper track tension, reduces wear on undercarriage components, and helps maintain safe, efficient machine operation. Note: this listing is for the rod only not the full track adjuster assembly. Each machine requires two rods. Specifications Length x Diameter: 11 in. x 2 in. Shoulder Extension: 1 7 8 in. Component: Track Adjuster Rod (rod only not the full assembly) Compatible Models Fits Case (Fits Case IH) Crawler Dozers and Crawler Loaders: 450 (after serial number 3050800), 450B, 450C (standard track only does not fit 450C Long Track), 455, 455B, 455C Note: Serial number restriction applies to the 450 model this rod fits 450 units manufactured after serial number 3050800 only. Does NOT fit 450C Long Track models. Replaces Part Number(s): R51793, R51793 A New aftermarket replacement part not remanufactured, not used.