---
product_id: 16983392
title: "NGK Spark Plug, NGK Standard, 10 mm Thread, 0.749 in Reach, Gasket Seat, Stock Number 6689, Resistor, Each"
brand: "ngk"
price: "Bs.515"
currency: BOB
in_stock: true
reviews_count: 13
category: "Ngk"
url: https://www.desertcart.bo/products/16983392-ngk-spark-plug-ngk-standard-10-mm-thread-0-749
store_origin: BO
region: Bolivia
---

# Built-in resistor for consistent spark performance 98% pure copper core for superior heat dissipation 10 mm cold-rolled threads prevent cross-threading NGK Spark Plug, NGK Standard, 10 mm Thread, 0.749 in Reach, Gasket Seat, Stock Number 6689, Resistor, Each

**Brand:** ngk
**Price:** Bs.515
**Availability:** ✅ In Stock

## Summary

> ⚡ Ignite your engine’s potential with NGK’s precision spark plug!

## Quick Answers

- **What is this?** NGK Spark Plug, NGK Standard, 10 mm Thread, 0.749 in Reach, Gasket Seat, Stock Number 6689, Resistor, Each by ngk
- **How much does it cost?** Bs.515 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.bo](https://www.desertcart.bo/products/16983392-ngk-spark-plug-ngk-standard-10-mm-thread-0-749)

## 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:** Corrugated ribs prevent flashover, guaranteeing consistent spark delivery under pressure.
- • **Precision Fit, Zero Hassle:** Cold-rolled 10 mm threads protect your engine from damage and simplify installation.
- • **Maintenance-Free Excellence:** Trivalent plating eliminates the need for anti-seize, saving you time and effort.
- • **Durability Meets Performance:** High-grade alumina silicate ceramic insulator offers superior strength and heat transfer.
- • **Reliable Ignition, Every Time:** Copper core maximizes heat dissipation to prevent overheating and ensure smooth starts.

## Overview

The NGK Standard Spark Plug (Stock #6689) features a 98% pure copper core for enhanced heat dissipation, a durable alumina silicate ceramic insulator, and cold-rolled 10 mm threads to prevent cross-threading. Designed with a built-in resistor and trivalent plating, it ensures reliable ignition, maintenance-free use, and protection against flashover. Ideal for UTVs and small engines, this premium spark plug delivers consistent performance and longevity.

## Description

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

Review: Fits my Honda BF 9.9 perfectly. - This is a stock replacement for the existing plugs. I have used NGK plugs in several different engines and never had a issue.
Review: Spark Plug Replacement Marine Boat Motor - Great price and worked as it should.

## 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 |
|---------------|-------|
| ASIN | B001RMAEIS |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #231,508 in Automotive ( See Top 100 in Automotive ) #33 in Automotive Performance Spark Plugs #4,046 in Automotive Ignition Parts |
| Brand | NGK |
| Brand Name | NGK |
| Compatible with Vehicle Type | UTV |
| Core Material | Copper |
| Customer Reviews | 4.6 out of 5 stars 259 Reviews |
| Gap Size | 0.75 inches |
| Global Trade Identification Number | 00087295166895 |
| Included Components | NGK 6689 |
| Item Type Name | SPARK_PLUG |
| Item Weight | 0.03 kg |
| Manufacturer | NGK |
| Manufacturer Part Number | CR5EH-9 |
| Manufacturer Warranty Description | Manufacturer Warranty |
| Model Number | 6689 |
| OEM Equivalent Part Number | 6689 |
| Thread Size | 10 mm |
| Top Material Type | Nickel |
| UPC | 087295166895 |
| Unit Count | 1 Count |
| Vehicle Service Type | UTV |

## Product Details

- **Brand:** NGK
- **Core Material:** Copper
- **Thread Size:** 10 mm
- **Top Material Type:** Nickel
- **Vehicle Service Type:** UTV

## Images

![NGK Spark 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/71QNg7WcU0L.jpg)
![NGK Spark Plug, NGK Standard, 10 mm Thread, 0.749 in Reach, Gasket Seat, Stock Number 6689, Resistor, Each - Image 2](https://m.media-amazon.com/images/I/61bDKcj4Q5L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fits my Honda BF 9.9 perfectly.
*by D***. on November 10, 2025*

This is a stock replacement for the existing plugs. I have used NGK plugs in several different engines and never had a issue.

### ⭐⭐⭐⭐⭐ Spark Plug Replacement Marine Boat Motor
*by J***Y on June 15, 2026*

Great price and worked as it should.

### ⭐⭐⭐⭐⭐ Honda
*by D***N on September 12, 2025*

Exactly as described Should work perfectly in my Honda 15hp outboard.

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

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*Product available on Desertcart Bolivia*
*Store origin: BO*
*Last updated: 2026-08-09*