The Kubota 6815170390 is a genuine OEM spring designed for various Kubota agricultural and utility machinery. This essential component ensures proper function in models such as B1700, B2100, B2400, B2601, B2650, B3000, B3030, B3200, B3300, B3350, B7500, B7610, B7800 tractors, B2301, B2601, B3301, B3350SU compact tractors, RTV-X1100CR, RTV-X1100CW, RTV-X1120DR, RTV-X1120DW, RTV-X1140R, RTV-X1140W utility vehicles, and ZD1011, ZD1021, ZD1211, ZD1211L, ZD1211RL, ZD1211R, ZD1511, ZD1511L zero-turn mowers.