I dug this up when I was ordering from www.subaruparts.com, I believe it was for members of a Subaru forum, but it worked for me. It's a good place to buy maintainence parts like filters and spark plugs, as well as stuff like floor mats. I don't know when it expires. 10% Off $100 or more: 25RR4lbW SubaruParts.com Link from fatwallet