A spark plug cap to suit the DLE 40 single — a mid-size two-stroke petrol engine for sport and scale models.
On this engine the component is the spark plug cap, which connects the ignition lead to the plug and suppresses radio interference.
Why this part matters: caps corrode inside and lose contact, which shows as an intermittent misfire or a dead cylinder that is hard to trace.
Fitting note: Check the internal contact and the fit on the plug, and make sure the cap is fully pushed home.
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