Champion Iridium S Electrode Aviation Spark Plug - REM38S

In the early 1900s, small planes flew with single ignition systems powered by adapted automobile engines using Champion-brand automotive spark plugs. By the 1920s, the company had developed innovative spark plugs designed specifically for the aviation industry.

Now, as the preferred supplier of spark plugs for general aviation aircraft, Champion Aerospace designs and manufactures Champion-brand piston-engine ignition components for both OEM and aftermarket applications. Every spark plug manufactured has built-in design advantages that assure longer life and greater reliability.

Champion manufactures more high-performance, aviation-grade spark plugs than any other company in the world. 

Thread size: 18 mm
Reach: 1/2"/1.27 cm
Shielded Threading: 5/8" - 24
Standard Electrode: Iridium 

Plug Gap: .016"-.021"/0.41-0.53 mm