G-series Spark Plug Cap Spring for Zenoah K140072121 - compatible with G230-290 G380 G450 G620 G800  [K140072121]

G-series cap spring for Zenoah engines

This component is supplied as an OEM-style replacement under Zenoah part number K140072121 and is designed to replace the cap retention spring on the listed small RC gas engines. It functions as an accessory to re-establish secure contact between the plug cap and the ignition terminal on model engines.

Fitting is straightforward for those familiar with basic engine upkeep: detach the plug cap, remove the old spring element, fit the K140072121 spring, and press the cap back in place ensuring a snug connection. The procedure typically only requires common hand tools from an RC toolkit.

During tuning and regular maintenance the spring plays a small but useful role by keeping the cap in place through vibration and throttle changes, supporting consistent ignition performance. Replace the spring when caps become loose or electrical contact is intermittent.

Compatible Models

• G230-290
• G380
• G450
• G620
• G800