---
product_id: 16983392
title: "NGKSpark Plug, NGK Standard, 10 mm Thread, 0.749 in Reach, Gasket Seat, Stock Number 6689, Resistor, Each"
brand: "ngk"
price: "7.55 OMR"
currency: OMR
in_stock: true
reviews_count: 13
url: https://www.desertcart.com.om/products/16983392-ngkspark-plug-ngk-standard-10-mm-thread-0-749-in
store_origin: OM
region: Oman
---

# High-grade ceramic 98% copper core Cold-rolled threads NGKSpark Plug, NGK Standard, 10 mm Thread, 0.749 in Reach, Gasket Seat, Stock Number 6689, Resistor, Each

**Brand:** ngk
**Price:** 7.55 OMR
**Availability:** ✅ In Stock

## Summary

> 🚀 Ignite Your Ride with NGK Spark Plugs!

## Quick Answers

- **What is this?** NGKSpark Plug, NGK Standard, 10 mm Thread, 0.749 in Reach, Gasket Seat, Stock Number 6689, Resistor, Each by ngk
- **How much does it cost?** 7.55 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/16983392-ngkspark-plug-ngk-standard-10-mm-thread-0-749-in)

## 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

- • **Flashover Protection:** Innovative corrugated ribs prevent flashover, ensuring optimal performance every time.
- • **Cross-Threading Prevention:** Cold-rolled threads ensure easy installation and protect your cylinder heads from damage.
- • **No More Anti-Seize Hassles:** Trivalent plating eliminates the need for anti-seize, making maintenance a breeze.
- • **Unmatched Heat Dissipation:** Experience reliable starts with a 98% pure copper core that keeps your engine cool.
- • **Superior Strength & Durability:** Crafted with high-grade alumina silicate ceramic for enhanced strength and heat transfer.

## Overview

The NGK 6689 Standard Spark Plug (CR5EH-9) is engineered for performance, featuring a 98% pure copper core for superior heat dissipation, a high-grade ceramic insulator for strength, and cold-rolled threads to prevent cross-threading. With trivalent plating and corrugated ribs, this spark plug ensures reliable starts and optimal engine performance.

## Description

NGKSpark Plug, NGK Standard, 10 mm Thread, 0.749 in Reach, Gasket Seat, Stock Number 6689, Resistor, Each

## Features

- 98% pure copper core increases heat dissipation for more reliable starts and prevents spark plug from overheating
- High-grade alumina silicate ceramic insulator for superior strength and heat transfer
- Cold-rolled threads to prevent cross-threading and damage to cylinder heads
- Trivalent plating eliminates need for anti-seize and corrugated ribs prevent flashover
- Quantity: 1 per package

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | NGK |
| Brand | NGK |
| Model | NGK 6689 |
| Item Weight | 1.06 ounces |
| Product Dimensions | 0.28 x 0.35 x 1.14 inches |
| Country of Origin | China |
| Item model number | 6689 |
| Is Discontinued By Manufacturer | No |
| Exterior | Painted |
| Manufacturer Part Number | CR5EH-9 |
| OEM Part Number | 6689 |

## Images

![NGKSpark Plug, NGK Standard, 10 mm Thread, 0.749 in Reach, Gasket Seat, Stock Number 6689, Resistor, Each - Image 1](https://m.media-amazon.com/images/I/512r3gH059L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Fits Honda Outboard
  

*by W***N on Reviewed in the United States on July 1, 2021*

They fit my BF20D/BFP20D Honda 20HP Outboard Motor. It Runs Great.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Completely satisfied
  

*by H***S on Reviewed in the United States on April 18, 2021*

Installed in my Honda outboard. Runs noticeably better.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Honda 20HP Outboard
  

*by B***S on Reviewed in the United States on October 27, 2020*

Fits my Honda 20HP outboard perfect.

---

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**Shop now:** [https://www.desertcart.com.om/products/16983392-ngkspark-plug-ngk-standard-10-mm-thread-0-749-in](https://www.desertcart.com.om/products/16983392-ngkspark-plug-ngk-standard-10-mm-thread-0-749-in)

---

*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-03-03*