• Champion RJ19LMMP Resistor Spark Plug for Mowers
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Champion Spark Plug - RJ19LMMP

Champion Spark Plug - RJ19LMMP

Low stock: 3 left

$9.55 AUD
$0.00 AUD $9.55 AUD
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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.

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The plug specs

  • Plug code: RJ19LMMP
  • Thread size: 14mm
  • Reach: 9.5mm (3/8")
  • Hex size: 13/16" (20.6mm)
  • Seat type: Gasket
  • Resistor: Yes
  • Electrode tip: Special for lawn mowers
  • Heat range: 19
  • Suits: 4-stroke lawn and garden engines
  • Pack: Single plug

Why it is worth swapping

  • Easy starting again once the worn plug is swapped out
  • Steadier idle and smoother running through the cut
  • Cheap insurance against a no-start on mowing day
  • A yearly swap keeps the engine tuned and willing
  • A clean spark means less fuel wasted and less hard pulling
  • Right fit avoids a plug that fouls or runs too hot

Shipping and Returns

We pack and send your order with care, right here from our Strathalbyn store. Most parcels leave within 1-2 business days, and you'll get tracking as soon as it's on the way. If you're local, you can choose click-and-collect or our delivery service at checkout.

If something arrives damaged or not quite right, let us know within 14 days and we'll sort it quickly. You can return unused items in their original condition for a refund or store credit. For safety reasons, we can't accept returns on gas bottles, cut materials, or custom orders.

We're here to make things easy, so if you ever have a question about your delivery or a return, our team is only a call away.

Why you'll love shopping with us

  • Keeps the rig moving

    From booster cables to jerry cans, we stock the bits that get you out of trouble.

  • Right part, less guessing

    Tell us the job and we'll help match the spec so it fits first go.

  • Backup when it matters

    If something's not right, you deal with people who want it sorted.