FZ110S Rear Back Plate (service replacement) - YSF7346A by YS Engine  [YSF7346A]

Rear back plate for FZ110S engines

This YS Engine back plate assembly is the service spare listed as YSF7346A and built for the FZ110S RC engine family. It is intended to close the rear of the crankcase and to be used during regular maintenance and engine rebuilds.

The component forms the interface for the rear bearings and the crankcase sealing surfaces, retaining lubricants and helping exclude contaminants from the combustion chamber area in glow-type RC engines. When fitting a replacement back plate, check bearing seats and seal faces for trueness and remove old gasket material before refitting to maintain proper sealing.

Fitment note: the product name denotes compatibility with FZ110S series engines. No extra adaptor hardware is supplied, so confirm the YSF7346A against your engine parts list before ordering. This spare mainly preserves sealing and bearing alignment rather than changing performance characteristics.

Use the correct service part number when planning a rebuild to ensure the back plate fits and functions as intended.