YS Engine YSS2037 56SR Regulator Housing B Replacement  [YSS2037]

Regulator Housing B - Service and Upgrade Notes

The regulator body B for YS Engine YSS2037 is a replacement unit compatible with 56SR regulators, intended for service or upgrade use on RC engine regulator assemblies.

When fitting a replacement, confirm mating surfaces and mounting boss alignment, replace seals if needed, and tighten fixings evenly to avoid misalignment. Careful seating of the housing preserves throttle and mixture control linkage geometry.

Swapping the housing during tuning sessions can restore precise control movement and eliminate small leaks that affect engine response. Treat this as an aftermarket service part and check that it matches the dimensions of your 56SR regulator model.