New Briggs and Stratton OEM PTO Clutch Fits 

Belt Width 5/8"
Height 3 1/4"
ID 1 1/8"
Genuine Briggs and Stratton Clutch
Pulley Diameter 6 1/2"
Rotation Direction Counter Clockwise

Fits Part Numbers
Craftsman 5100084, 5100084S, 5100084SM
Ferris 5100084, 5100084S, 5100084SM
Massey Ferguson 5100084, 5100084S, 5100084SM
McCulloch 5100084, 5100084S, 5100084SM
Simplicity 5100084, 5100084S, 5100084SM
Snapper 5100084, 5100084S, 5100084SM
Snapper Pro 5100084, 5100084S, 5100084SM, 5105090
Warner 5218-221

Fits Ferris Models
5901578,5901583,5901584,5901586,5901589,5901590,5901593,5901595,5901596,5901792,5901821,5901822,5901829,5901830,5901839,5901840,5901843,5901845,5901846,5901847,5901875,5901877,5901923,5901924,5901927,5901992,5901993,5902029,5902030,5902061,5902072,5902073,5902075,5902076,5902078,5902081,5902083,5902084,5902085,5902086,5902088,5902091,5902092,5902107,5902108,5902111,5902156,5902172,5902173