Product Overview

NGK V-Power Plug 7558

Ensure smooth sailing and peak performance for your marine engine with the NGK V-Power 7558 Spark Plug. This high-quality plug, engineered with NGK's renowned V-Groove technology, delivers superior ignition performance, improved fuel efficiency, and extended service life. Minimize misfires and maximize your time on the water with the reliable power of the NGK 7558.

Key Features

**V-Power Technology:** The unique V-cut center electrode promotes faster flame kernel growth for improved combustion and enhanced throttle response.
**Enhanced Durability:** Trivalent metal plating resists corrosion and seizing, ensuring reliable starts and long-lasting performance in harsh marine environments.
**Optimal Heat Dissipation:** The copper core and pure alumina silicate insulator efficiently transfer heat, preventing overheating and extending plug life.
**Leak-Free Design:** Triple seals prevent leakage, maintaining consistent performance and protecting your engine.
**5k Ohm Resistor:** Suppresses RFI interference for cleaner communication and navigation systems.
**Extended Projection:** Designed for optimal performance in various marine engine applications.
**Precise Gap:** Pre-gapped at .031" (0.8mm) for optimal performance right out of the box.

What's in the Box

1 x NGK V-Power 7558 Spark Plug

Specifications

Shell Thread Diameter14mm

Thread Pitch1.25mm

Seat TypeGasket

Reach19mm (3/4")

Hex Size5/8" (16mm)

Terminal TypeSolid

Overall HeightISO

Gap.031" (0.8mm)

Center Electrode MaterialNickel

Center Electrode TypeV-Cut

Center Electrode Size2.5mm

ProjectionExtended Projection

Ground Electrode MaterialNickel

Ground Electrode TypeStandard

Quantity1

ResistorYes

Resistor Value5k Ohm

Heat Range5

Torque Specs (Cast Iron)18-25.3 lb. ft.

Torque Specs (Aluminum)18-21.6 lb. ft.

The Captain's Take

After years of navigating challenging waters, I've learned the importance of reliable equipment. The NGK V-Power 7558s are a staple on my boat. They provide consistent, powerful ignition, helping my engine run smoother and more efficiently. I highly recommend these spark plugs to any captain looking for dependable performance and peace of mind on the water.