NEW TURBOCHARGER FITS JOHN DEERE EXCAVATOR 690 690A 690B 6406T ENGINE AR51207. Replaces Part Numbers & Specifications. JOHN DEERE AR58756 AR63780 AR51207 AR61860. ITEM DESCRIPTION: TURBO/TURBO CHARGER UNIT TYPE: JOHN DEERE SPECIFICATIONS: GASKETS INCLUDED. As a parts distributor we mostly sell aftermarket parts (any OEM parts would be noted as such). PLEASE VERIFY YOUR OEM PART NUMBER FROM YOUR ORIGINAL UNIT TO HELP ENSURE FITMENT. JOHN DEERE LOADER 644 JOHN DEERE LOADER 644A JOHN DEERE COMPACTOR JD646 JOHN DEERE COMPACTOR JD646B JOHN DEERE EXCAVATOR 690 JOHN DEERE EXCAVATOR 690A JOHN DEERE EXCAVATOR 690B JOHN DEERE FELLER BUNCHER 693B. The sole responsibility of Marine Parts Distributors – if any – shall be the replacement of defective products as stated above. It is the responsibility of the customer to verify the correct application information prior to purchasing any product from Marine Parts Distributors. It is the responsibility of the customer to verify the correct application information prior to purchasing any product from MARINE PARTS DISTRIBUTORS. If an order must be canceled or changed, please contact the service department as soon as possible. 8AM-6PM EST Customer Service.