NGK LFR6A 6668 Spark Plug – 4 Pack for Watercraft FX/FZR/FZS/VX/VXR/VXS | 26.5mm Reach, 16mm Hex, 0.9mm Gap

Genuine NGK Spark Plugs for watercraft

This 4-pack of NGK V-Power LFR6A 6668 spark plugs is engineered for marine use and designed to fit several watercraft models. With a focus on reliable ignition and consistent performance, these plugs are ready to install and keep your engine turning smoothly through a season of rides and adventures.

The V-Power design features a distinctive v-cut in the center electrode. This geometry directs the spark toward the edge of the electrode, which can help the spark develop more rapidly and potentially improve ignitability while reducing quenching under demanding conditions. The result is a plug set that's purpose-built for steady starts and steady combustion in a marine environment.

What you get in this pack is straightforward: four brand-new NGK spark plugs that share the same performance characteristics. The included resistor value is 5K ohm, and the electrical profile is matched for consistent behavior across all units in the pack. The packaging supports quick inventory management for boat owners and service professionals alike.

Specifications at a glance

• Brand: NGK
• Part: LFR6A 6668
• Resistor value: 5K ohm
• Reach: 26.5 mm
• Hex size: 16 mm
• Gap: 0.9 mm

Compatibility and installation tips

• Designed for watercraft models such as fx, fzr, fzs, vx, vxr, vxs. Verify fitment against your OEM specifications before replacing plugs.
• For best results, install as a matched set and torque to the manufacturer’s specification. A clean, dry install helps ensure a solid seal and reliable startup in marine conditions.

In real-world use, this 4-pack provides ready replacements so you can maintain even ignition performance across cylinders and rides. While individual results can vary with conditions and engine history, the LFR6A 6668 plug is built to support steady starts, consistent combustion, and dependable operation when you’re out on the water.