Product Overview
NGK Laser Iridium Spark Plug 4212

Unleash the full potential of your marine engine with the NGK Laser Iridium Spark Plug 4212. This high-performance spark plug is engineered to deliver superior ignition performance, improved fuel efficiency, and extended service life, ensuring smooth and reliable starts every time you cast off. Built to withstand the harsh marine environment, the 4212 provides the ultimate in reliability and durability, giving you peace of mind on the water.
Key Features
- **Laser Iridium Center Electrode:** Provides extreme ignitability and superior anti-fouling properties for enhanced combustion and extended plug life.
- **Platinum Ground Electrode:** Contributes to improved durability and longevity, resisting wear and tear in demanding marine environments.
- **Fine Wire Design (0.6mm):** Promotes better fuel atomization, resulting in improved fuel efficiency and reduced emissions.
- **Projected Tip Design:** Extends into the combustion chamber for optimized flame kernel development and more complete fuel burn.
- **10k Ohm Resistor:** Suppresses electromagnetic interference, protecting sensitive onboard electronics.
- **Extended Longevity (100k Miles):** Reduces maintenance frequency and replacement costs, providing long-lasting performance.
- **Heat Range 6:** Optimized for a variety of marine engine applications, ensuring efficient and reliable operation.
What's in the Box
- One (1) NGK Laser Iridium Spark Plug 4212
Specifications
The Captain's Take
As a seasoned captain, I demand reliability and performance from my vessel. The NGK Laser Iridium 4212 delivers on both fronts. These plugs provide consistently strong starts, even after extended periods of non-use, and I've noticed a tangible improvement in fuel efficiency. I highly recommend the NGK 4212 to any boater looking for the ultimate in ignition performance and peace of mind on the water.