PV301 John Deere 450B 450C 455D 455E 555 555B track adjuster. Complete track adjuster assembly for the following John Deere models: 450B, 450C, 455D, 455E, 555 & 555B with 5 roller track frames. These adjusters are manufactured here in the USA and are made from high strength steel and are precision welded. These replacement track adjusters are an exact fit and require no modifications.


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