Patent ID: 7992667

Claim:
In combination with a motorcycle, an adapter apparatus for use in mounting a pair of oil filter cartridges on an engine, said adapter apparatus comprising: a manifold for supportively connecting said oil filter cartridges and for allowing oil to flow sequentially in series through and between said oil filter cartridges and an engine when installed on the engine and operational; and an inlet tube and an outlet tube respectively attached to said manifold and in fluid communication with selected passages said manifold, for respectively routing oil to and away from said adapter apparatus; wherein said manifold comprises: a metal block body having an outer face, an inner face, and at least one lateral edge with a plurality of integral cooling fins extending outwardly thereon, said block body having a plurality of hollow flow passages formed therein to route oil therethrough; and first and second hollow sleeve fittings attached to said block body, each of said sleeve fittings having male threads formed on a respective outer surface thereof, a portion of each of said sleeve fittings extending outwardly from said outer face of said block body, said sleeve fittings respectively configured to threadably receive one of said oil filter cartridges thereon.