---
product_id: 12508559
title: "Iridium IX DCPR7EIX Spark Plugs Compatible with 1999-2016 Harley Davidson Twin Cam (Pair)"
brand: "ngk"
price: "₨14235"
currency: LKR
in_stock: true
reviews_count: 13
category: "Ngk"
url: https://www.desertcart.lk/products/12508559-iridium-ix-dcpr7eix-spark-plugs-compatible-with-1999-2016-harley
store_origin: LK
region: Sri Lanka
---

# Up to 3HP boost Pre-gapped for perfect fit Enhanced anti-corrosion plating Iridium IX DCPR7EIX Spark Plugs Compatible with 1999-2016 Harley Davidson Twin Cam (Pair)

**Brand:** ngk
**Price:** ₨14235
**Availability:** ✅ In Stock

## Summary

> ⚡ Ignite your ride with NGK Iridium IX – where power meets precision!

## Quick Answers

- **What is this?** Iridium IX DCPR7EIX Spark Plugs Compatible with 1999-2016 Harley Davidson Twin Cam (Pair) by ngk
- **How much does it cost?** ₨14235 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/12508559-iridium-ix-dcpr7eix-spark-plugs-compatible-with-1999-2016-harley)

## 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

- • **Iridium Edge Tech:** Ultra-small 0.6mm iridium electrode slashes voltage needs and extends ignition system life.
- • **Power Surge Ready:** Unlock up to 3 extra horsepower instantly for your Harley’s Twin Cam engine.
- • **Precision Pre-Gapped:** Save time and ensure flawless ignition with factory-set gaps tailored for peak performance.
- • **Tailored Fit for Harley:** Specifically engineered for 1999-2016 Harley Davidson Twin Cam models—no guesswork, just plug and play.
- • **Corrosion-Resistant Armor:** New metal shell plating guards against rust and wear, keeping your ride reliable mile after mile.

## Overview

NGK Iridium IX DCPR7EIX spark plugs deliver cutting-edge ignition technology with a 25% smaller iridium electrode that reduces voltage requirements and extends system life. Pre-gapped for hassle-free installation, these plugs provide up to 3 horsepower gain and feature enhanced anti-corrosion plating, making them the perfect upgrade for 1999-2016 Harley Davidson Twin Cam motorcycles.

## Description

DescriptionGain up to 3HP just by using these plugs! The ultimate in spark plug technology and performance from the industry leader The iridium electrode is 25% smaller than a platinum electrode, and it's just 1/4 the size of a conventional nickel electrode Ultra-small diameter center electrode reduces voltage requirement and extends ignition system life New metal shell plating has enhanced anticorrosion qualities Come pre-gapped

Review: Excellent Spark Plugs! - I bought these spark plugs for my 2007 Harley-Davidson Softail Night Train (FXSTB). They fit perfectly! The price is for a pair (2 plugs) — very convenient and affordable. After installation, the motorcycle started instantly and runs smoothly and quietly. I’m very happy with this purchase and highly recommend these plugs to all Harley owners — great quality for a fair price!
Review: Great plugs - Perform well in my 2011 Harley FLHTK 103. No issues with fitment, look good, good value, bike start after install.

## Features

- Come pre-gapped
- The ultimate in spark plug technology and performance from the industry leader
- Ultra-small diameter center electrode reduces voltage requirement and extends ignition system life
- New metal shell plating has enhanced anti corrosion qualities

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003BUCNNS |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #5,984 in Automotive ( See Top 100 in Automotive ) #15 in Automotive Replacement Spark Plugs |
| Brand | NGK |
| Core Material | Nickel |
| Customer Reviews | 4.7 4.7 out of 5 stars (4,755) |
| Date First Available | December 12, 2013 |
| Exterior | Painted |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.44 ounces |
| Item model number | DCPR7EIX |
| Manufacturer | NGK |
| Manufacturer Part Number | DCPR7EIX |
| Model | NGK DCPR7EIX |
| Position | Front, Rear |
| Product Dimensions | 3.31 x 0.94 x 0.83 inches |
| Thread Size | 12mm |
| Top Material Type | Metal |
| UPC | 700155016542 |
| Vehicle Service Type | Motorcycle |

## Product Details

- **Brand:** NGK
- **Core Material:** Nickel
- **Thread Size:** 12mm
- **Top Material Type:** Metal
- **Vehicle Service Type:** Motorcycle

## Images

![Iridium IX DCPR7EIX Spark Plugs Compatible with 1999-2016 Harley Davidson Twin Cam (Pair) - Image 1](https://m.media-amazon.com/images/I/61RTkqyQPKL.jpg)

## Questions & Answers

**Q: Should I gap  to my owners manual spec or are they designed to work with the smaller pre-gap they came with?**
A: Harley Davidson recommends 0.40" gap.  As to "You should never gap an iridium plug", NGK's website states for Harley Davidson, these should be gapped at 0.40".  I've found many websites stating that if re-gap is needed use care not to damage the electrode or the porcelain center.  So, it's not that you should not re-gap, it's that you should be extremely careful.

**Q: Are these 14mm threads?**
A: Yes

**Q: Do you get 1 or 2 spark plugs in this price**
A: Pair / 2 plugs

**Q: Is this 6r12, if so why does it not say so ?**
A: Because these plugs are IX DCPR7EIX 99 TO 16 HARLEY-DAVIDSON

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent Spark Plugs!
*by A***N on October 20, 2025*

I bought these spark plugs for my 2007 Harley-Davidson Softail Night Train (FXSTB). They fit perfectly! The price is for a pair (2 plugs) — very convenient and affordable. After installation, the motorcycle started instantly and runs smoothly and quietly. I’m very happy with this purchase and highly recommend these plugs to all Harley owners — great quality for a fair price!

### ⭐⭐⭐⭐⭐ Great plugs
*by W***S on June 5, 2025*

Perform well in my 2011 Harley FLHTK 103. No issues with fitment, look good, good value, bike start after install.

### ⭐⭐⭐⭐⭐ new life into an old bike.
*by I***. on August 27, 2025*

Put them in my 1200 Sportster xlc 2002. Along with a new air filter, made my bike run like a champ. A consistent idle and great acceleration..

## Frequently Bought Together

- NGK Iridium IX DCPR7EIX Spark Plugs Compatible with 1999-2016 Harley Davidson Twin Cam (Pair)
- K&N Motorcycle Oil Filter: High Performance, Premium, Designed to be used with Synthetic or Conventional Oils: Fits Select Harely Davidson, Buell Motorcycles, KN-171C
- K&N Motorcycle Oil Filter: High Performance, Premium, Designed to be used with Synthetic or Conventional Oils: Fits Select Harely Davidson Motorcycles, KN-171B

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-02-04*