UJD41210 Knob--Replaces R27963, AT65316

Replaces number R27963, AT65316, JDS850

Fits: 1010, 2010, 2510, 2520 up to sn 22000, 3010, 3020 up to sn 150000, 4000 up to sn 250000, 4010
4020 up to sn 250000, 4520 up to sn 142449, 5010, 5020 without soundguard cab, 6030 without soundguard cab