YS Engine YSE3063 pump cap DZ170 CDI replacement part  [YSE3063]

Pump cap for DZ170 CDI engines

This pump cap is an RC-scale replacement part intended for DZ170 CDI engines, maintaining fuel delivery interfaces on CDI-equipped units. It serves as a direct spare for the pump housing outlet and is presented as a single accessory item for model engine upkeep.

Compatibility is focused on DZ170 CDI engine assemblies; verify the original part marking before fitment. Installation is straightforward for hobby workshops, requiring removal of the fuel system cover and swap of the cap, taking care to reseal gaskets and check fuel lines for proper routing.

In tuning and maintenance contexts the pump cap supports consistent fuel flow and sealing integrity, factors that affect idle stability and throttle response on RC engines. Treat this part as an ordinary replacement spare for bench servicing, track-side swaps, and routine checks.