---
product_id: 10261226
title: "E3 Spark Plugs E3.40 Premium Automotive Spark Plug with DiamondFIRE Technology, 14mm Thread, 0.460” Reach, Taper Seat, Resistor, Pack of 1"
brand: "e3"
price: "KSh3281"
currency: KES
in_stock: true
url: https://www.desertcart.co.ke/products/10261226-e3-spark-plugs-e3-40-premium-automotive-spark-plug-diamondfire
store_origin: KE
region: Kenya
---

# 14mm Thread & 0.460” Reach Up to 13% Better Fuel Economy DiamondFIRE Side-Wire Tech E3 Spark Plugs E3.40 Premium Automotive Spark Plug with DiamondFIRE Technology, 14mm Thread, 0.460” Reach, Taper Seat, Resistor, Pack of 1

**Brand:** e3
**Price:** KSh3281
**Availability:** ✅ In Stock

## Summary

> 💥 Ignite Efficiency, Drive with Confidence!

## Quick Answers

- **What is this?** E3 Spark Plugs E3.40 Premium Automotive Spark Plug with DiamondFIRE Technology, 14mm Thread, 0.460” Reach, Taper Seat, Resistor, Pack of 1 by e3
- **How much does it cost?** KSh3281 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/10261226-e3-spark-plugs-e3-40-premium-automotive-spark-plug-diamondfire)

## Best For

- e3 enthusiasts

## Why This Product

- Trusted e3 brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Power Up Your Drive:** Patented DiamondFIRE tech boosts engine power by up to 12%, making every ride feel like a performance upgrade.
- • **Fuel Smarter, Not Harder:** Experience 3%-13% improved fuel economy—save money and reduce stops at the pump without sacrificing power.
- • **Built to Last, Guaranteed:** Backed by a 5-year/100,000-mile warranty, this spark plug delivers reliable performance mile after mile.
- • **Precision Fit for Classic Rides:** Designed for domestic vehicles from the '60s to early '90s with a perfect 14mm thread and taper seat for seamless installation.
- • **Cleaner Combustion, Cleaner Planet:** Lower hydrocarbon emissions and carbon buildup for eco-conscious driving that meets modern standards.

## Overview

The E3 Spark Plugs E3.40 features patented DiamondFIRE side-wire technology that enhances combustion efficiency, delivering up to 12% more power and 13% better fuel economy. Designed specifically for domestic vehicles from the 1960s to early 1990s, it offers a precise 14mm thread and 0.460” reach with a taper seat. Its yttrium-enhanced alloy construction prevents pre-ignition and reduces emissions, backed by a 5-year/100,000-mile warranty for long-lasting, dependable performance.

## Description

E3 Spark Plugs E3.40 Premium Automotive Spark Plug with DiamondFIRE Technology, 14mm Thread, 0.460” Reach, Taper Seat, Resistor, Pack of 1

## Features

- FOR DOMESTIC APPLICATIONS: Designed to fit a wide range of domestic vehicles, this spark plug enhances power, improves fuel economy, and reduces harmful hydrocarbon emissions, making it ideal for various engine types and models
- DIAMONDFIRE TECHNOLOGY: Patented side-wire electrode delivers a faster, more complete burn, boosting engine efficiency, with up to 4%-12% more power and 3%-13% better fuel economy depending on engine class
- LOWER EMISSIONS: The more complete burn helps to reduce emissions, minimize carbon buildup, promote cleaner combustion, and support compliance with modern environmental and emissions standards
- PERFORMANCE BUILT: Yttrium-enhanced alloy and colder heat range help prevent pre-ignition and support performance mods by reducing side-wire temperatures and improving combustion
- LONG-LASTING PERFORMANCE: Includes a 5-year/100,000-mile limited warranty for long-lasting use and dependable performance without frequent replacements

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | E3 |
| Core Material | Copper |
| Thread Size | 14mm |
| Top Material Type | Alloy Steel |
| Vehicle Service Type | Car |
| Global Trade Identification Number | 00894489000404 |
| Automotive Fit Type | Vehicle Specific Fit |
| UPC | 894489000404 |
| OEM Part Number | E3.40 |
| Manufacturer | E3 Spark Plugs |
| Model | Automotive Spark Plug |
| Item Weight | 3.2 ounces |
| Product Dimensions | 6.1 x 4.1 x 0.8 inches |
| Item model number | E3.40 |
| Is Discontinued By Manufacturer | No |
| Exterior | Machined |
| Manufacturer Part Number | E3.40 |
| Position | Center |

## Product Details

- **Brand:** E3
- **Core Material:** Copper
- **Thread Size:** 14mm
- **Top Material Type:** Alloy Steel
- **Vehicle Service Type:** Car

## Images

![E3 Spark Plugs E3.40 Premium Automotive Spark Plug with DiamondFIRE Technology, 14mm Thread, 0.460” Reach, Taper Seat, Resistor, Pack of 1 - Image 1](https://m.media-amazon.com/images/I/51Cb6CG7Q8L.jpg)
![E3 Spark Plugs E3.40 Premium Automotive Spark Plug with DiamondFIRE Technology, 14mm Thread, 0.460” Reach, Taper Seat, Resistor, Pack of 1 - Image 2](https://m.media-amazon.com/images/I/51T2lqxZ3QL.jpg)
![E3 Spark Plugs E3.40 Premium Automotive Spark Plug with DiamondFIRE Technology, 14mm Thread, 0.460” Reach, Taper Seat, Resistor, Pack of 1 - Image 3](https://m.media-amazon.com/images/I/61vAJ-Bj7EL.jpg)

## Frequently Bought Together

- E3 Spark Plugs E3.40 E3 Spark Plug (Automotive)
- NGK Spark Plug DPR7EA-9 5129
- NGK Spark Plug DPR8EA-9 4929, Silver

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**Shop now:** [https://www.desertcart.co.ke/products/10261226-e3-spark-plugs-e3-40-premium-automotive-spark-plug-diamondfire](https://www.desertcart.co.ke/products/10261226-e3-spark-plugs-e3-40-premium-automotive-spark-plug-diamondfire)

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*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-02-22*