---
product_id: 328933686
title: "NGK 6578 Spark Plugs (BPR4ES) - Pack of 2, Copper"
brand: "ngk"
price: "¥7714"
currency: JPY
in_stock: true
reviews_count: 5
category: "Ngk"
url: https://www.desertcart.jp/products/328933686-ngk-6578-spark-plugs-bpr4es-pack-of-2-copper
store_origin: JP
region: Japan
---

# Corrugated ribs prevent flashover for reliable ignition Copper core for superior heat dissipation Trivalent metal plating resists corrosion & seizing NGK 6578 Spark Plugs (BPR4ES) - Pack of 2, Copper

**Brand:** ngk
**Price:** ¥7714
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** NGK 6578 Spark Plugs (BPR4ES) - Pack of 2, Copper by ngk
- **How much does it cost?** ¥7714 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/328933686-ngk-6578-spark-plugs-bpr4es-pack-of-2-copper)

## 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

- • **Durability That Lasts:** Trivalent metal plating ensures long-term anti-corrosion and anti-seizing protection
- • **Ignition You Can Trust:** Corrugated ribs eliminate flashover, delivering consistent spark performance
- • **Proven Legacy of Quality:** NGK’s trusted spark plugs, favored by professionals for decades
- • **Strength Meets Precision:** Pure alumina silicate ceramic insulator offers superior strength and optimal heat transfer
- • **Unmatched Heat Management:** Copper core rapidly removes heat, boosting engine efficiency

## Overview

The NGK 6578 Spark Plugs (BPR4ES) pack of 2 features a copper core for enhanced heat removal, trivalent metal plating for superior corrosion and seizing resistance, and corrugated ribs to prevent flashover. Designed with a pure alumina silicate ceramic insulator, these plugs deliver reliable ignition and durability, making them a trusted choice for professional-grade engine performance.

## Description

Genuine 2 pack NGK Standard 6578 Spark Plug

Review: no misfires - good replacement plugs
Review: 4 Pack Great Deal NGK's - There are legit and great replacements. The 4 pack is super convenient.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | NGK |
| Core material | Copper |
| Number of items | 1 |
| Thread size | 14mm |
| Top material type | Alumina |
| Vehicle service type | Motorcycle |

## Product Details

- **Brand:** NGK
- **Core material:** Copper
- **Thread size:** 14mm
- **Top material type:** Alumina
- **Vehicle service type:** Motorcycle

## Images

![NGK 6578 Spark Plugs (BPR4ES) - Pack of 2, Copper - Image 1](https://m.media-amazon.com/images/I/71qWY1Fu8CL.jpg)

## Available Options

This product comes in different **Item Package Quantity** options.

## Questions & Answers

**Q: is this a qty. 2 plugs for $10.99 ?**
A: NGK 6578 Spark Plugs (BPR4ES) - Pack of 2

**Q: will these plugs fit a fr730v kawasaki engine?????**
A: Yes I used these on my Toro Timecutter mower with the same Kawasaki engine.  They work fine.

**Q: Will this plug fit my Husqvarna Z254F 54 inch zero turn**
A: Check reference books in auto shop or dept. for specifics accompanied to what your whip manual lists.

**Q: Is the spark plug pre-gapped  or do I need to do it?**
A: They're gapped at about .032"...my application calls for .030", so I adjusted them.

## Customer Reviews

### ⭐⭐⭐⭐⭐ no misfires
*by G***. on 25 May 2026*

good replacement plugs

### ⭐⭐⭐⭐⭐ 4 Pack Great Deal NGK's
*by R***G on 11 May 2026*

There are legit and great replacements. The 4 pack is super convenient.

### ⭐⭐⭐⭐⭐ Sprakplugs work great
*by S***N on 9 August 2025*

Works great

## Frequently Bought Together

- NGK 6578 Spark Plugs (BPR4ES) - Pack of 2, Copper
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**Shop now:** [https://www.desertcart.jp/products/328933686-ngk-6578-spark-plugs-bpr4es-pack-of-2-copper](https://www.desertcart.jp/products/328933686-ngk-6578-spark-plugs-bpr4es-pack-of-2-copper)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-07-06*