Have you tried-
Engine Oil Filters
1 Oil Filter + 1 Seal Kit - $21.95 USD- (Includes USPS 1st Class Shipping)
2 Oil Filters + 1 Seal Kit - $32.95 USD- (Includes USPS 1st Class Shipping)
3 Oil Filters + 2 Seal Kits - $43.95 USD - (Includes USPS 1st Class Shipping)
Email Ron at fyredad@hotmail.com
As on http://spyderryders.net.au/products.html