Idler Gear Assembly Description
This Idler Gear Assembly is indexed for John Deere s: Fit For John Deere Tractor: X300, X304, X310, X320, X324, X330, X340, X350, X354, X370, X380, X384, X390, X394, X584; John Deere s: Fit For John Deere Tractor: X300 Select Series, X300R Select Series, X304 Select Series, X305R, X310, X320 Select Series, X324 Select Series, X330, X340 Select Series, X350, X350R, X354, X370, X380, X384, X390, X394, X584. Compare reference number 280-842 against the label on your existing John Deere component before ordering.
Additional cross references on file: AM134501, AM134502, AM138079. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.




