DZ140/DZ160 Engine Insulating O-ring YSF2188 for YS Engine  [YSF2188]

Sealing O-ring for DZ140/DZ160 Engines

This insulator o-ring is a replacement part intended for YS Engine DZ140 and DZ160 model engines. It provides an insulating seal between the cylinder head or mount and adjacent metal parts, helping to prevent leak paths that could impair engine performance.

Compatibility covers only the DZ140 and DZ160 engine family; confirm your engine model before ordering. The component is meant for model-scale RC engine maintenance and is not designed for full-size engines.

Assembly notes: remove the mount or head as required, clean mating faces, align and seat the o-ring correctly in its groove, and reassemble following the engine manufacturer's torque specifications. Use suitable hand tools and apply thread locker only where the engine instructions advise it to avoid assembly damage.

Maintenance importance: the o-ring assists in maintaining sealing and vacuum integrity within the engine assembly. Replace it if you observe cracking, permanent flattening, loss of elasticity, or during scheduled servicing to ensure consistent running.