Featuring a robust 2‑prong electrode and shielded 18 mm thread design, the REM40E spark plug ensures reliable ignition and longevity in demanding piston engines. Rated at .016‑.021″ gap and fully FAA traceable—widely used in light aircraft such as Cessna 172 and Piper Cherokee.


REM40E Champion Spark Plug
Champion REM40E aviation spark plug (18 mm, 5/8‑24) with FAA traceability.



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