YOU ARE LOOKING AT THE VALVE COVER OFF A JOHN DEERE Z445. BRIGGS AND STRATTON 27HP ENGINE. IT IS IN GOOD USED WORKING CONDITION. Z445 SERIAL NUMBER 100001-150000BRIGGS AND STRATTON 27 HP 44Q977WE WORK HARD TO ENSURE THAT THE PARTS WE SELL ARE IN GOOD WORKING CONDITION, HOWEVER WE ARE HUMAN AND OCCASIONALLY MAKE ERRORS. IF YOU HAVE A PROBLEM WITH A PART EMAIL US FIRST BEFORE YOU OPEN A CASE OR LEAVE NEGATIVE FEEDBACK, IF WE MADE AN ERROR WE WILL CORRECT IT AS POSSIBLE ON A CASE BY CASE BASIS