New fuel return line seal, replaces John Deere R51936.
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MS4E – New fuel return line seal / sealing washer sleeve, replaces John Deere part number R51936. 5.56 mm ID x 10.50 mm OD x 5.41 mm thick, 90 durometer. Sold each.
Replaces: John Deere R51936, R63603.
Fits: John Deere 3029, 4039, 4045, 6059, 6068 engines and others.
Confirm fitment by original part number before ordering.
Product identification
Products explicitly described as “Genuine OEM” are genuine original equipment manufacturer parts. Other references to OEM names, part numbers, or model numbers are provided to identify compatibility and do not imply that a product is OEM.
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