YS FZ53/FZ63 Cam Cover Replacement O-Ring YSF5136 for YS Engine  [YSF5136]

Cam cover seal for FZ53 and FZ63 engines

Designed as a direct replacement, this O-ring fits the cam cover area on YS FZ53 and FZ63 model engines to restore the cover seal and prevent oil or fuel creeping from the cam housing while running.

Note that compatibility covers the cam cover interface of FZ53 and FZ63 only. Confirm the cam cover groove shape and dimensions prior to fitting to ensure proper compatibility with your engine.

Fitting procedure for technicians: remove the cam cover, take out the old O-ring, thoroughly clean the sealing groove of deposits, position the new O-ring evenly and reinstall the cover following the manufacturer's torque recommendations. Avoid stretching the O-ring excessively to maintain a consistent seal.

Practical benefit: keeping the cam cover sealed with a new O-ring helps sustain crankcase pressure and cuts down on oil migration, aiding consistent idle and smoother throttle response during testing and events.