Hay Dog Torsion Spring. #700707863.

Fits:

Agco 1835, 1837, 1839, 1841, 7105, 7110, 7115, 7120 Balers

Challenger 1842, SB34, SB36, SB44 Balers

Hesston 4550, 4570, 4590, 4650, 4655, 4690 Balers

Massey Ferguson 135SB, 137SB, 139SB, 1835, 1837, 1839, 1840, 1841, 1842, 1843 Balers

New Idea 7205, 7210, 7215 Balers