High-Performance RC9YC 344 Car Spark Plug

Precision-engineered with nickel-plated shell for superior corrosion resistance, ensuring long-lasting durability under extreme engine conditions. Features a copper core electrode for optimal thermal conductivity and efficient spark delivery.

Direct OEM replacement for seamless compatibility with various auto engines, maintaining factory specifications for consistent performance. Ideal for daily commuters, performance vehicles, and heavy-duty engines requiring reliable ignition.

Exclusive bulk pricing available for wholesalers and retailers—stock up on industry-leading quality at unbeatable global rates. Trusted by professional mechanics for its anti-fouling design and stable spark output in both high-speed and stop-and-go driving scenarios.

100% tested for voltage endurance and heat dissipation, backed by strict ISO manufacturing standards. Ships in crush-proof packaging to guarantee damage-free delivery for bulk orders.