Product Overview

NGK Laser Iridium Spark Plug 5599

Maximize your boat's performance and reliability with the NGK Laser Iridium Spark Plug 5599. This high-performance spark plug is engineered with cutting-edge iridium and platinum technology to deliver superior ignition, improved fuel efficiency, and extended service life. Spend less time worrying about maintenance and more time enjoying the open water with the consistent and powerful spark provided by the NGK 5599.

Key Features

**Laser Iridium Center Electrode:** Six times harder than platinum, ensuring exceptional durability and a stable spark even in harsh marine environments.
**Platinum Ground Electrode:** Provides enhanced ignitability and extends the plug's service life, reducing maintenance needs.
**Superior Anti-Corrosion and Anti-Seizing Properties:** Makes installation and removal a breeze while protecting against the corrosive effects of saltwater.
**Pure Alumina Silicate Ceramic Insulator:** Offers superior strength and efficient heat transfer, preventing overheating and ensuring reliable starts.
**Copper Core:** Aids in heat removal, further enhancing performance and longevity.
**100,000 Mile Longevity:** Provides exceptional value and long-lasting performance, minimizing replacement frequency.
**5k Ohm Resistor:** Suppresses electrical noise and interference for smooth engine operation.
**Precisely Gapped at .059" (1.5mm):** Optimized for optimal performance and fuel efficiency right out of the box.

Specifications

Shell Thread Diameter14mm

Thread Pitch1.25mm

Seat TypeTapered

Reach17.5mm (.689")

Hex Size5/8" (16mm)

Terminal TypeSolid

Overall HeightISO

Gap.059" (1.5mm)

Center Electrode MaterialIridium

TypeStandard

Size0.6mm

ProjectionProjected

Ground Electrode MaterialPlatinum

Quantity1

ResistorYes

Resistor Value5k Ohm

Heat Range4

Torque SpecsCast Iron: 10.8-18 lb. ft. Aluminum: 7.2-14.5 lb. ft.

Longevity100k Miles

The Captain's Take

As a seasoned captain, I know the importance of reliable equipment. The NGK 5599 Laser Iridium spark plugs are my go-to choice. They provide a consistently strong spark, resulting in smoother idling, quicker starts, and improved fuel economy. These plugs are built to last, giving me peace of mind and more time on the water.