IT IS LOCATED IN THE REAR OF THE ENGINE ON THE DRIVERS SIDE YOU CAN FIT YOUR HAND FROM THE DRIVERS SIDE ALONG TILL YOU CAN FEEL IT VERY SMALL AREA IT TAKES A 6 TO 7" EXTENSION WITH A E6 TORX INVERTED EXTENSON WITH A VERY FELXABLE EXTENSION IT CAN BE VERY FRUSTRATION TO FIND YOU NEED A VERY BRIGHT LIGHT TO SEE ON THE 2.5L V6 I USE A MAGNETIC SOCKET SO YOU LOOSE THE BOLT AS IT WILL DROP AND THEN YOU HAVE TO REEMOVE THE SPLASH TRAY UNDER THE ENGINE REMEBER RIGHT IS TIGHT AND LEFT IS LOOSE TO REMOVE THE TORX HEAD BOLT
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IT IS A E8 TORX HEAD NOT E6 MY MISTAKE