This is the replacement rocker arm retainer E-clip for the following O.S. engines:
FS-26 Surpass FS-40 Surpass FS-48 Surpass
FS-70 Surpass FS-91 Surpass FS-120 Surpass II with pump
FS-120 Surpass FS-120 Surpass SP FT-120II
These are the E-clips that hold the rocker arms onto the rocker support.
– If you need more information, use these O.S. resources –