---
product_id: 457387123
title: "NGK Spark Plug LFR6A 6668 (Pack of 4) Watercraft FX FZR FZS VX VXR VXS Reach 26.5mm Hex Size 16mm Gap 0.9mm Resistor Value 5K Ohm"
brand: "ngk"
price: "374 zł"
currency: PLN
in_stock: false
reviews_count: 5
category: "Ngk"
url: https://www.desertcart.pl/products/457387123-ngk-spark-plug-lfr6a-6668-pack-of-4-watercraft-fx
store_origin: PL
region: Poland
---

# V-cut electrode for rapid spark Copper core for superior heat removal Trivalent plating resists corrosion NGK Spark Plug LFR6A 6668 (Pack of 4) Watercraft FX FZR FZS VX VXR VXS Reach 26.5mm Hex Size 16mm Gap 0.9mm Resistor Value 5K Ohm

**Brand:** ngk
**Price:** 374 zł
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Spark your ride to life with NGK’s cutting-edge ignition tech!

## Quick Answers

- **What is this?** NGK Spark Plug LFR6A 6668 (Pack of 4) Watercraft FX FZR FZS VX VXR VXS Reach 26.5mm Hex Size 16mm Gap 0.9mm Resistor Value 5K Ohm by ngk
- **How much does it cost?** 374 zł with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/457387123-ngk-spark-plug-lfr6a-6668-pack-of-4-watercraft-fx)

## Best For

- ngk enthusiasts

## Why This Product

- Trusted ngk brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Trivalent metal plating ensures unbeatable anti-corrosion and anti-seizing durability.
- • **Perfect OEM Fit:** Specifically engineered for Yamaha FX, FZR, FZS, VX series watercraft for seamless installation.
- • **Cool Under Pressure:** Copper core design efficiently dissipates heat, preventing overheating during intense rides.
- • **Ignite with Precision:** Unique V-cut electrode boosts spark speed and ignitability for peak engine performance.
- • **Leak-Proof Reliability:** Triple seals guarantee zero leakage, maintaining consistent engine power and efficiency.

## Overview

The NGK LFR6A 6668 spark plug pack of 4 features a patented V-cut electrode for faster spark development, trivalent metal plating for superior corrosion resistance, and a copper core for optimal heat dissipation. Designed specifically for Yamaha watercraft models FX, FZR, FZS, VX series, these plugs ensure reliable ignition, enhanced engine performance, and long-lasting durability.

## Description

NGK V-Power plugs feature a unique v-cut in the center electrode that directs the spark to the edge of the electrode, helping the spark develop more rapidly, increasing ignitability and reducing quenching. Trivalent metal plating provides superior anti-corrosion and anti-seizing properties Corrugated ribs prevent Flashover Pure alumina silicate ceramic Insulator, provides superior strength and better heat transfer Copper Core aids in heat removal Triple seals prevent leakage FITMENT YAMAHA FX (FX1800), FX CRUISER HO (FB1800A, FY1800A), FX HO (FB1800, FY1800), FX SHO,CRUISER SHO (FA1800), FX SUPER HIGH OUTPUT (FX1800), FZR (GX1800), FZS (GX1800), VX CRUISER HO (VC1800R), VXR (VX1800), VXS (VX1800) For more information, please reference to https://www.ngkntk.com/part-finder/produktfinder/////LFR6A//

Review: Fast shipping
Review: Perfect replacement for OEM Yamaha. My plugs were long past due for a change. We noticed a major improvement in performance.

## Features

- Brand new
- NGK Spark Plugs
- set of 4

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07PGPVQFL |
| Best Sellers Rank | #154,437 in Automotive ( See Top 100 in Automotive ) #1,056 in Automotive Performance Spark Plugs |
| Brand | NGK |
| Customer Reviews | 4.9 4.9 out of 5 stars (259) |
| Date First Available | 16 May 2019 |
| Item Weight | 218 g |
| Item model number | 6668 |
| Manufacturer | NGK |
| Manufacturer Part Number | LFR6A-6668 |
| Position | Front, Rear |
| Product Dimensions | 9.4 x 2.39 x 8.43 cm; 217.72 g |

## Product Details

- **Brand:** NGK
- **Core material:** Iridium
- **Thread size:** 16 millimeters
- **Top material type:** copper
- **Vehicle service type:** Watercraft

## Images

![NGK Spark Plug LFR6A 6668 (Pack of 4) Watercraft FX FZR FZS VX VXR VXS Reach 26.5mm Hex Size 16mm Gap 0.9mm Resistor Value 5K Ohm - Image 1](https://m.media-amazon.com/images/I/61ldxKzBdCL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by G***M on 19 August 2023*

Fast shipping

### ⭐⭐⭐⭐⭐ Review
*by C***H on 25 October 2025*

Perfect replacement for OEM Yamaha. My plugs were long past due for a change. We noticed a major improvement in performance.

### ⭐⭐⭐⭐⭐ Review
*by E***N on 7 July 2025*

Good. Works perfect

## Frequently Bought Together

- NGK Spark Plug LFR6A 6668 (Pack of 4) Watercraft FX FZR FZS VX VXR VXS Reach 26.5mm Hex Size 16mm Gap 0.9mm Resistor Value 5K Ohm
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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-01-24*