Champion RJ19LMMP Resistor Spark Plug for Mowers

A tired spark plug is usually behind a mower that drags on the pull cord or coughs and stalls once it warms up. Dropping in a fresh Champion RJ19LMMP brings the spark back so the engine fires first or second pull and idles clean.

Champion has made small-engine plugs for generations, and this one is built for 4-stroke lawn and garden engines. It is a resistor plug with a gasket seat and a heat range of 19. A plug is not one size fits all though. The thread, the reach and the heat range all have to match your engine, so a plug that suits one mower can foul or run hot in another.

Easiest way to get it right is to bring your old plug in, or tell us the make and model of your mower, and we will check the RJ19LMMP is the correct fit before you buy.

Full thread, reach and heat range details are in the tabs below. Pop in to the store or give us a call and we will have one ready.