Just went out an pulled one (2003 model) and they are M10-1.5 X 25 mm long. Grade has me stumped, there is a boat anchor with a 9 under it. Not seen that before, even the service manual does not state what it means. It shows metric grade bolts like 8.8 or 9.9 and the like but not like above. My Machinery Hand book doesn't even tell me what it is. Suppose a Google search migh answer that one for ya
Ed