Zenoah K140072121 Spark Plug Cap Spring Replacement for G230-290, G380, G450, G620, G800  [K140072121]

ZENOAH SPARK PLUG CAP SPRING G230-290,G380,G450,G620,G800 #140072121 (W/O PACKING) (REPLACE #505043101)
Price:
CAD$4.48
Brand:
Zenoah
Model:
K140072121
Condition:
Brand New
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Replacement spark cap spring for Zenoah G-series engines

This is an OEM-compatible spark plug cap spring supplied under Zenoah part number K140072121, intended as a direct replacement for the cap retention mechanism on the specified small RC gas engine models. The part restores reliable electrical contact and ensures the plug cap remains seated against the ignition terminal during use.

Installation is simple for anyone comfortable with basic engine servicing: remove the plug cap, swap the worn spring for the K140072121 unit, and re-seat the cap checking for firm contact without over-compression. No specialist tools are required beyond the standard hand tools you would find in most RC workbenches.

As part of routine tuning and maintenance the spring helps keep the plug cap secure under vibration and throttle changes, supporting stable ignition. Replace the spring whenever caps feel loose or ignition becomes intermittent to maintain dependable running.

Supported engine models

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

How can I confirm this spring fits my engine cap?

Verify the engine code on your machine and match it to the listed models. Also compare the shape of your existing spring to the replacement; K140072121 is intended for the G-series caps named in the product title.

Will I need special tools to swap the spring?

No special equipment is necessary. Typical small screwdrivers or pliers and steady hands are sufficient to remove the cap, replace the spring, and refit the cap securely.

How often should I check the plug cap spring?

Inspect the spring whenever you service the plug cap or if you notice a loose cap or ignition inconsistency. Replace the spring if it shows deformation, corrosion, or loss of tension.

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