This Champion RN9YC Marine Spark Plug delivers dependable ignition performance for a wide range of marine gasoline engines.
Built with Champion’s exclusive copper core electrode technology, this spark plug ensures efficient heat transfer, consistent spark, and reliable starts in marine environments.
The RN9YC is a trusted, OEM-quality plug used in many inboard, sterndrive, and outboard marine engines, offering durability, anti-fouling performance, and smooth idle under varying load conditions.
Designed to meet or exceed OEM ignition standards, it’s an excellent choice for regular maintenance or tune-ups.
Product Features
- Manufacturer: Champion Spark Plugs
- Application: Universal marine use (various inboard, outboard, and sterndrive engines)
- Type: Marine spark plug (copper core, resistor type)
- Model #: RN9YC
- Manufacturer Item #: 507668
- Electrode Type: Copper core for improved conductivity
- Design: Resistor plug for reduced radio frequency interference (RFI)
- Condition: 100% brand-new Champion marine spark plug
- Warranty: Backed by Champion’s limited manufacturer warranty
Additional Information
Note: Always check your engine manufacturer’s specifications for correct heat range, thread size, and gap settings before installation.
The Champion RN9YC is one of the most commonly used plugs across Chrysler, Mercruiser, Volvo Penta, OMC, and Crusader marine applications.
For assistance confirming fitment, please email or fill out the contact form with your engine details.
Shipping Information
SHIPPING: Additional shipping fees to Alaska, Hawaii, U.S. Territories, or international destinations will be calculated after checkout.
You will receive an email and a PayPal money request for the additional shipping charges at the email address provided.
(Some items are excluded from international shipping.)
Customer Support
For questions or to confirm compatibility, please email customerservice@marinepartswarehouse.com .
Please include your engine model or serial number to help confirm proper fitment before ordering.
