Spark Plug Champion Rc12Yc Brigg S Ohv Engine 792015 491055 691043

The mower or generator that started first pull last season now turns over and coughs, and nine times out of ten the plug is where you start looking. A fouled electrode, a cracked insulator or a gap that has crept open after a few hundred hours will do exactly that, and a plug costs less than an afternoon spent chasing fuel.

Why a tired plug reads as a hard-starting engine

Small air-cooled engines run hot, rich and dirty compared with a car, so the electrode wears and carbon builds far faster. As the gap widens the coil has to push harder to jump it, and on a cold morning with a marginal recoil pull it simply will not. Swapping the plug at the start of the season, rather than after the engine has already refused, is the cheapest maintenance on the machine.

Cross-reference numbers to match against

The supplier lists this against the Champion RC12YC designation and against replacement numbers 792015, 491055 and 691043, for Briggs OHV engines. Those are matching references so you can identify the right plug, not a claim about who made it — the supplier states plainly that these are not original parts. Check the number stamped on the plug currently in your engine, or the one in your machine's handbook, against that list before you order.

Key features

• Two plugs supplied: the supplier lists pack contents as 2 spark plugs, which covers a twin-cylinder engine or a spare for next season.
• Champion RC12YC reference: the designation the supplier matches this plug to.
• Three cross-reference numbers: 792015, 491055 and 691043, all listed for Briggs OHV engines.
• Stated as aftermarket: the supplier explicitly notes these are not original parts.

Specifications

• Reference designation: Champion RC12YC
• Cross-reference numbers: 792015, 491055, 691043
• Application: Briggs OHV engines
• Pack contents: 2 spark plugs (per the supplier's pack listing)
• Electrode gap, thread size, reach and heat range: not published by the supplier

What's in the box

• 2 x spark plugs

Before you fit these

• The product title reads as a single plug while the supplier's pack contents say two. Confirm the quantity with us before ordering if it matters to you.
• No gap, thread size or reach is published. Match the number on your existing plug rather than relying on the photos, and set the gap to the figure in your engine's handbook.
• These are small-engine plugs listed for Briggs OHV applications, not car plugs.

Check the numbers against your engine, and keep the second plug in the shed for the morning the first one lets go.

Returns, Refunds, and Replacements

Products that are received faulty, damaged, or not as described are eligible for a return, refund, or replacement in accordance with the Australian Consumer Law (ACL). We are committed to ensuring all products meet the standards of quality and reliability expected by our customers. However, please note that we do not accept returns or provide refunds for change of mind. We encourage you to carefully consider your purchase to ensure it meets your needs and expectations.

Delivery Timeframe

Please note that we cannot guarantee the exact date of arrival, and the delivery timeframes (excluding weekends and public holidays) are as follows:

For customers in Victoria, approximately 7-10 working days; For customers in NSW, SA, ACT, and QLD, approximately 9-12 working days; For customers in WA, NT, and TAS, approximately 9-12 working days.