The Champion Copper Plus Spark Plug 978 is built for dependable ignition and consistent performance, leveraging Champion’s trusted Copper Plus technology. Designed for engines that require a copper-core spark plug, this unit delivers efficient heat transfer, stable firing, and reliable starting power when you need it most.
Why the Copper Plus 978 stands out
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Copper core for rapid heat transfer and strong ignition performance across a wide operating range.
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Factory gap of 0.025 inches provides a ready-to-install, drop-in replacement that helps restore smooth idle and crisp throttle response.
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Robust construction with a durable electrode design and corrosion-resistant shell to withstand typical engine vibrations and environment.
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Single-unit packaging in a boxed presentation ensures safe shipping and simple stocking for shop or home maintenance.
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Plug number 978 clearly identifies this exact Champion Copper Plus variant for precision replacements.
Ideal use cases and who benefits
The Champion Copper Plus Spark Plug 978 is an excellent choice for DIY enthusiasts and professional mechanics tackling routine maintenance, tune-ups, and restorations on engines that specify a 978 Copper Plus plug. If your engine calls for a reliable, easy-to-install spark plug with proven conductance and consistent ignition, this is a straightforward, high-value replacement.
Performance and practical benefits
Replacing worn or fouled plugs with the Copper Plus 978 can lead to:
- More reliable starts, especially in variable temperatures
- Smoother idle and reduced misfires from a consistent spark
- Better fuel atomization and steady combustion, contributing to improved throttle response
- Longer-lasting performance in typical operating conditions thanks to rugged construction
Installation tips
For the best results with the Champion Copper Plus Spark Plug 978:
- Ensure your engine requires a 978 Copper Plus plug and a 0.025 inch gap.
- Torque to the manufacturer’s specifications to avoid over-tightening or under-seating.
- Inspect the threads and seating surface before installation to prevent cross-threading or poor grounding.
- Replace only with a single, properly gapped plug to maintain even firing and optimal performance.
