YS 50ST Direct-Fit Regulator Body B YSS1037 Replacement for RC Engines by YS Engine  [YSS1037]

Direct-Fit Regulator Housing 50ST

This replacement Regulator Body B is a purpose-made spare for YS 50ST regulator assemblies and compatible engine regulator mounts. It restores the external casing and mounting interface while leaving internal regulator settings and tuning unchanged.

For installation, remove the damaged housing and move any internal components across to the new body as required, align the housing with the regulator mounting points, and secure using the original fasteners. No specialist tools beyond standard hobby hex drivers are normally required; check seals and mating surfaces during the reassembly process.

In maintenance and tuning workflows this part helps preserve regulator location and mounting geometry following repair or wear, making adjustments more repeatable and simplifying troubleshooting. Keep the item for model-scale use only.