John Deere 27D Bottom Roller | Part #4340535

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John Deere 27D Bottom Roller | Part #4340535 100% Precision Fitment. Guaranteed. Direct-fit replacement bottom roller for the John Deere 27D, part 4340535. Part Details Machine: Jo hn Deere 27D Component: Bottom Roller Part Number: 4340535 Undercarriage Role Bottom rollers carry machine weight through the lower track frame and keep the track moving squarely through the undercarriage. Service Life Undercarriage wear is cumulative. Worn tracks, rollers, idlers or sprockets can accelerate wear across the system, so mating components should wear evenly and track correctly together. Show more