Product Overview
NGK Standard Nickel Plug 4339
Ensure smooth, reliable starts and peak performance for your marine engine with the NGK Standard Nickel Plug 4339. This durable and dependable spark plug is engineered to withstand the harsh marine environment, delivering consistent ignition and optimal fuel efficiency. Built with NGK's renowned quality, the 4339 offers long-lasting performance and helps prevent corrosion and seizing, minimizing maintenance and maximizing your time on the water.
Key Features
- **Corrosion-Resistant Design:** Trivalent metal plating protects against corrosion and seizing in the demanding marine environment.
- **Enhanced Ignition:** The pure alumina silicate ceramic insulator provides superior strength and improved heat transfer for reliable spark delivery.
- **Efficient Heat Dissipation:** A copper core efficiently removes heat, contributing to longer plug life and optimal engine performance.
- **Leak-Free Performance:** Triple seals eliminate leakage and ensure consistent combustion.
- **Extended Longevity:** Enjoy a lifespan of up to 30,000 miles, minimizing replacement frequency.
- **Resists Flashover:** Corrugated ribs prevent flashover, ensuring consistent ignition power.
- **Optimal Performance:** Designed for a heat range of 8 and a gap of .028" (0.7mm), providing reliable performance in various marine applications.
- **Removable Terminal Nut:** Offers flexibility for various wiring configurations.
What's in the Box
- 1 x NGK Standard Nickel Plug 4339
Specifications
Shell Thread Diameter12mm
Thread Pitch1.25mm
Seat TypeGasket
Reach19mm (3/4")
Hex Size5/8" (16mm)
Terminal TypeRemovable Nut
Overall HeightJIS
Gap.028" (0.7mm)
Center Electrode MaterialNickel
TypeStandard
Size2.5mm
ProjectionProjected
Ground Electrode MaterialNickel
Quantity1
ResistorYes
Resistor Value5k Ohm
Heat Range8
Torque SpecsCast Iron: 10.8-18 lb. ft. Aluminum: 10.8-14.5 lb. ft.
Longevity30k Miles
The Captain's Take
I've relied on NGK spark plugs for years, and the 4339 is a staple in my engine maintenance kit. Its consistent performance and durability in saltwater conditions are unmatched. Trust me, reliable starting and smooth running are crucial out on the water, and the NGK 4339 delivers every time.
Warranty Information
60 Days
