Champion RN9YC Small Engine Spark Plug (375-RN9YCMP)
Champion RN9YC Small Engine Spark Plug (375-RN9YCMP)
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A Champion RN9YC resistor plug for small four stroke engines, the sort of plug a lot of mowers and generators take when they're hard to start or running rough.
It's a 14mm thread plug with a 19mm (3/4 inch) reach and a 13/16 inch (21mm) hex, with a copper core centre electrode. The long reach is the thing to check, because a plug that's too short or too long for the head won't run right. Match the number off your old plug or out of the engine manual before you buy, and check the gap against the manual too.
Sold each. Full specs are in the tabs below, and if you're not sure it's the right one, bring the old plug in to 34-52 Milnes Rd, Strathalbyn or call us on (08) 8536 4333.

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The details
- Brand: Champion
- Model: RN9YC
- Supplier code: 375-RN9YCMP
- Type: Resistor spark plug, small engine
- Thread: 14mm
- Reach: 19mm (3/4 inch)
- Hex: 13/16 inch (21mm)
- Centre electrode: Copper core
- Gap: Check your engine manual
- Sold: Each
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.
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