DZ140 and DZ160 Insulator O-ring YSF2188 for YS Engine  [YSF2188]

Replacement Insulator O-ring for DZ140 and DZ160

This insulator o-ring is a direct replacement spare designed for YS Engine DZ140 and DZ160 model engines. It serves as an insulating seal at the engine mounting or cylinder head interface to maintain isolation between metal components and help prevent leak paths that can harm engine operation.

Compatibility is restricted to the DZ140 and DZ160 engine series; confirm your exact engine model before ordering. This part is intended for model-scale RC engine service and upkeep, not for full-size engines or non-model uses.

Installation notes: remove the engine mount or cylinder head as needed, check mating surfaces for wear or buildup, place the o-ring correctly in its groove prior to reassembly, and tighten fasteners to the engine maker's recommended torque values. Use proper hand tools and thread locking compound where the engine manual specifies to avoid damage during reassembly.

Tuning and maintenance role: the o-ring helps preserve vacuum and sealing integrity in the engine assembly. Replace the insulator o-ring when you observe flattening, cracking, or permanent deformation, or as part of scheduled engine servicing to maintain steady engine behavior.