Outer Seal
CTPA-966238M1 Replacement Part to Fit:  Massey Ferguson For Models: 150, 155, 158, 165, 165 UK, 200, 2200, 302, 304, 65, 765 3.755" x 2.628" x 0.586"  Price:  $6.57  Buyers Club Price:  $5.91