Champion RV12YC Spark Plug | #406 | 4-Pack | Volvo Penta & Marine Inboard
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Projected-Tip Resistor Spark Plug for Volvo Penta and Marine Inboard Engines — 4-Pack.
The Champion RV12YC is a projected-tip, resistor-type spark plug designed for Volvo Penta and other marine inboard engines. Part number 406, the YC-suffix design features a projected tip for improved ignitability and a built-in resistor to suppress radio frequency interference — important in the marine environment where electronics and communication equipment are in close proximity to the engine.
Sold in a 4-pack (Champion part 42802). Always verify fitment against your engine's owner's manual or Champion application guide before ordering.
Key Features
- Champion RV12YC spark plug — 4-pack (Champion #406)
- Projected tip for improved ignitability and combustion efficiency
- Built-in resistor suppresses radio frequency interference (RFI)
- Copper core electrode for reliable heat transfer and consistent spark
- Designed for Volvo Penta and marine inboard engine applications
Compatible Applications
- Volvo Penta inboard and sterndrive engines specifying Champion RV12YC or equivalent
- Other marine inboard engines cross-referencing Champion #406 or part 42802
- Verify fitment using your engine's owner's manual or the Champion spark plug application guide
Parts Desk Insights
The RV12YC is the go-to plug for Volvo Penta inboard and sterndrive tune-ups that specify this part number. As with all marine inboard plug replacements, replace the full set at the same time — uneven plug wear across cylinders is a common cause of rough idle and inconsistent performance on multi-cylinder inboard engines. Always confirm the correct heat range for your specific Volvo Penta engine model before ordering, as different engine variants may specify different plugs.
For MerCruiser and GM V8-based inboard applications, see the Champion RN12YC #404 or the Champion RN9YC #415. For a broader selection of ignition components, browse our Ignition Components collection.
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.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.