Does anyone out there know of aftermarket cross reference glow plug numbers for a 3007d003. I recently bought a 6x4 diesel and I am sure the dealer will want an arm and a leg for new glow plugs. Also could anyone tell me the year from serial number w006x4d006559? I have been running Deere Ag equipment since I can remember but am new to the gators. Info seems to be hard to find so I figured this forum would be my best bet. Thanks in advance for any help.