CHAMPION SPARK PLUG REM37BY
Champion Standard Electrode Aviation Spark Plug
Thread size: 18 mm
Reach: 1/2″/1.27 cm
Shielded Threading: 5/8″ – 24
Standard Electrode: Twin Electrode
Plug Gap: .016″-.021″/0.41-0.53 mm
NOTE: Spark plugs are shipped in factory sealed plastic cases. Opened spark plug cases make the spark plugs non-returnable.
Please do not open any spark plug until you are sure you have received the correct spark plugs for your application.