50ST Service Crankcase Plug YSS1045 Replacement by YS Engine  [YSS1045]

50ST crankcase replacement plug

The YS Engine YSS1045 crankcase plug is produced as an RC-scale replacement for YS 50ST engine assemblies. It functions as a service spare for the crankcase area and helps support scheduled maintenance and component renewal on model glow engines.

Use the plug when carrying out inspections or swapping out degraded crankcase fittings. Installation is carried out during normal disassembly and the part fits the intended crankcase opening without altering the engine's original structure.

Keep the item for model engine use only, check compatibility with your engine prior to fitting, and follow the engine maker's standard teardown and rebuild routine to guarantee correct sealing and alignment.