---
product_id: 128427932
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: "VT15119"
currency: VUV
in_stock: true
reviews_count: 9
category: "Ngk"
url: https://www.desertcart.vu/products/128427932-ngk-spark-plug-lfr6a-6668-pack-of-4-watercraft-fx
store_origin: VU
region: Vanuatu
---

# V-cut electrode for rapid spark 0.9mm gap for optimal ignition 26.5mm reach, precise fit 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:** VT15119
**Availability:** ✅ In Stock

## Summary

> ⚡ Ignite your ride with NGK’s precision spark—performance you can feel!

## 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?** VT15119 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/128427932-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

- • **Pack of Four:** Complete set for a full engine refresh—never miss a beat 🔄
- • **Perfect OEM Fit:** Specifically designed for Yamaha watercraft models 🔧
- • **Optimal Gap Size:** 0.9mm gap ensures consistent, efficient ignition 📏
- • **Durable Copper Core:** High-quality copper core for reliable conductivity and longevity 🔋
- • **Precision V-Power Spark:** Unique v-cut electrode boosts spark speed & ignitability ⚡

## Overview

The NGK LFR6A 6668 Spark Plug pack of 4 features a unique V-cut center electrode that accelerates spark development for improved ignitability and reduced quenching. With a 26.5mm reach and 0.9mm gap, these copper-core plugs are engineered for perfect OEM fit and optimal performance in Yamaha watercraft models, delivering reliable starts and enhanced engine efficiency.

## Description

Genuine 4 pack NGK V-Power LFR6A 6668 Spark Plug

Review: Nice Product - Fit a 2023 Yamaha AR190 just fine. OEM spark plugs.
Review: Perfect for Yamaha - Perfect replacement for OEM Yamaha. My plugs were long past due for a change. We noticed a major improvement in performance.

## Features

- 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
- Brand new
- NGK Spark Plugs

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07PGPVQFL |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #14,275 in Automotive ( See Top 100 in Automotive ) #87 in Automotive Replacement Spark Plugs |
| Brand Name | NGK |
| Compatible with Vehicle Type | Car, Truck |
| Core Material | Copper |
| Customer Reviews | 4.9 4.9 out of 5 stars (267) |
| Gap Size | 0.9 Millimeters |
| Included Components | 6668 |
| Item Weight | 7.68 ounces |
| Manufacturer | NGK |
| Manufacturer Part Number | LFR6A-6668 |
| Manufacturer Warranty Description | Includes manufacturer provided warranty |
| Model Number | 6668 |
| OEM Equivalent Part Number | LFR6A-6668 |
| Thread Size | M |
| Top Material Type | copper |
| UPC | 087295176016 |
| Unit Count | 4.0 Count |

## Product Details

- **Brand:** NGK
- **Core Material:** Copper
- **Thread Size:** M
- **Top Material Type:** copper
- **Vehicle Service Type:** Car, Truck

## 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

### ⭐⭐⭐⭐⭐ Nice Product
*by A***K on February 1, 2026*

Fit a 2023 Yamaha AR190 just fine. OEM spark plugs.

### ⭐⭐⭐⭐⭐ Perfect for Yamaha
*by C***H on October 25, 2025*

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

### ⭐⭐⭐⭐⭐ Cheaper than local parts stores
*by B***N on October 3, 2025*

Oem to the ones in my 13' yammy fx cruiser. Cheaper than local and I didn't have to leave the house.

## 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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- Yamaha New OEM WaveRunner Boat Oil Gallon 10W-40 4W WATERCRAFT LUB-10W40-WV-04

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**Shop now:** [https://www.desertcart.vu/products/128427932-ngk-spark-plug-lfr6a-6668-pack-of-4-watercraft-fx](https://www.desertcart.vu/products/128427932-ngk-spark-plug-lfr6a-6668-pack-of-4-watercraft-fx)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-06*