Zenoah K369990032 Champion RCJ7Y Spark Plug Replacement for G380PU G450PU  [K369990032]

Replacement plug engineered for nitro engine longevity

The Zenoah K369990032 Champion RCJ7Y spark plug serves as a compact replacement part, compatible with G380PU, G450PU, G620PU and G800BPU engines. It is supplied as the Champion RCJ7Y type and listed against part number 163073110 for straightforward replacement when the installed plug degrades.

The plug forms the ignition bridge for nitro RC engines, with a corrosion-resistant nickel alloy electrode to carry the spark into the combustion chamber. For modelling use it supports steady ignition timing and helps retain predictable idle and throttle response while tuning.

Installation guidance: allow the engine to cool prior to removal, clear the area to avoid contaminating the cylinder, unthread the old plug gently to avoid damaging threads, inspect the seat and thread condition, check electrode gap and overall condition, start the new plug by hand and tighten to a snug fit without excessive torque, then confirm ignition and idle settings. Not intended for full-size engines.