1855-0L
TELEDYNE FARRIS ENGINEERING 1855-0L NSMDC01 - RELIEF VALVE
A nice touch with iCarbide is the included hex key for simple adjustments.
#54 Teledyne Farris 1855-0L 1-½" x 2-½" Safety Relief Valve 1-1/2 x 2-1/2
It’s a direct fit for Cub, Cub Loboy, A, AV, Super A, and Super AV tractors, no mods needed.