The NGK LFR4A-E is a high-quality original resistor spark plug, developed for modern 4-stroke petrol engines and outboard motors. The spark plug delivers a stable and powerful spark, which ensures reliable cold starts, smooth engine operation, and efficient combustion. It contributes to optimal engine performance, lower fuel consumption, and high operational reliability.
NGK is the world's leading manufacturer of spark plugs and an original equipment supplier to a wide range of engine manufacturers. The LFR4A-E is manufactured with a copper core, nickel electrode, and a built-in 5 kΩ resistor, which reduces electrical noise and protects the engine's ignition and electronic systems. The spark plug is used on, among others, several Mercury and Mariner 75, 80, 90, 100, and 115 HP EFI 4-stroke outboard motors.
Key features
- Original NGK spark plug
- Stable and powerful spark
- Built-in resistor (5 kΩ)
- Copper core for optimal heat dissipation
- Nickel center electrode
- Corrosion-resistant trivalent plating
- Long service life
- OEM quality
- Suitable for Mercury and Mariner 4-stroke outboard motors
