Champion QL82C Marine Spark Plug | #931M | 4-Pack | Long-Reach 2-Stroke Outboard
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Long-Reach Marine Spark Plug for 2-Stroke Outboards — 4-Pack.
The Champion QL82C is a long-reach marine spark plug designed for 2-stroke outboard engines that require a non-resistor, standard-gap plug. Part number 931M, the C-suffix design uses a copper core electrode for reliable heat transfer and consistent spark — without the built-in resistor found in YC or JC4 series plugs. This makes it the correct choice for engines that specifically require a non-resistor plug, as specified in the engine's owner's manual.
The QL-series long-reach thread is engineered for outboard combustion chambers requiring deeper plug engagement. Sold in a 4-pack (Champion part 12212). Always verify fitment against your engine's owner's manual or Champion application guide before ordering.
Key Features
- Champion QL82C marine spark plug — 4-pack (Champion #931M)
- Long-reach QL-series thread — for outboard engines requiring deeper plug engagement
- Non-resistor design — for engines that specifically require a non-resistor spark plug
- Copper core electrode for reliable heat transfer and consistent spark
- Designed for 2-stroke marine outboard applications
Compatible Applications
- Evinrude and Johnson 2-stroke outboard engines specifying Champion QL82C or equivalent
- Other 2-stroke marine outboard engines requiring a long-reach, non-resistor plug
- Any application cross-referencing Champion #931M or part 12212
- Verify fitment using your engine's owner's manual or the Champion spark plug application guide
Parts Desk Insights
The QL82C is the right plug when your engine's manual specifically calls for a non-resistor, long-reach plug. Using a resistor plug (like the QL78YC) in an engine that specifies a non-resistor plug can cause ignition misfires on some older 2-stroke systems — so it's worth confirming the spec before substituting. If you're unsure whether your engine requires a resistor or non-resistor plug, check the owner's manual or the Champion application guide.
For long-reach 4-stroke outboard applications, see the Champion QL78YC #938M or the Champion QL77JC4 #828M. For the YC-series companion with a resistor, see the Champion QL82YC #932M.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
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