If you have little kids that like to stick their fingers into open holes, then the cap might be a good idea to have...Maybe call the dealer and have them mail one to your home. If interested, post the engines serial number to see if the part number can be located.Went missing while getting some warranty work done. Thought it would be cheaper to order than drive an hour to the dealer. If it isn't required I won't bother. Thanks for the reply.
found it online for $1.00 but shipping is $15.00, really?