HONDA GX610, GX620, GX670 & GXV610-K1 ENGINES. FITTING HOLE: 20mm. (CHECK YOUR OIL FILTER IS 82mm WIDTH. 1x OIL FILTER 1x INLINE FUEL FILTER. 1x AIR FILTER. FULL SERVICE / TUNE UP KIT. (Note: Your engine may use less so check when refilling). ).