--- product_id: 334292066 title: "Iridium IX DCPR7EIX Spark Plugs for 1999-2016 Harley Davidson Twin Cam (Pair)" brand: "ngk" price: "€ 61.01" currency: EUR in_stock: true reviews_count: 7 url: https://www.desertcart.pt/products/334292066-iridium-ix-dcpr7eix-spark-plugs-for-1999-2016-harley-davidson store_origin: PT region: Portugal --- # Up to 3HP gain Pre-gapped for perfect fit Enhanced anti-corrosion plating Iridium IX DCPR7EIX Spark Plugs for 1999-2016 Harley Davidson Twin Cam (Pair) **Brand:** ngk **Price:** € 61.01 **Availability:** ✅ In Stock ## Summary > ⚡ Ignite your Harley’s true potential with NGK Iridium IX! ## Quick Answers - **What is this?** Iridium IX DCPR7EIX Spark Plugs for 1999-2016 Harley Davidson Twin Cam (Pair) by ngk - **How much does it cost?** € 61.01 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/334292066-iridium-ix-dcpr7eix-spark-plugs-for-1999-2016-harley-davidson) ## 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 - • **Precision Pre-Gapped:** Ready to install with factory-perfect gaps for hassle-free tuning. - • **Iridium Edge Technology:** Ultra-small 0.4mm center electrode reduces voltage needs and extends ignition life. - • **Power Boost Performance:** Unlock up to 3 extra horsepower and feel the difference on every ride. - • **Tailored for Harley Davidson:** Specifically engineered for 1999-2016 Twin Cam models to maximize engine efficiency. - • **Corrosion-Resistant Durability:** New metal shell plating guards against rust and wear for long-lasting reliability. ## Overview NGK Iridium IX DCPR7EIX spark plugs deliver cutting-edge ignition technology with a 25% smaller iridium electrode, pre-gapped precision, and enhanced anti-corrosion plating. Designed specifically for 1999-2016 Harley Davidson Twin Cam motorcycles, these plugs boost horsepower by up to 3HP while extending ignition system life and ensuring reliable performance ride after ride. ## 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 ## 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 | #151,867 in Car & Motorbike (See Top 100 in Car & Motorbike) #906 in Ignitions | | Brand Name | NGK | | Compatible With Vehicle Type | Motorcycle | | Core Material | Iridium | | Customer Reviews | 4.7 4.7 out of 5 stars (4,786) 4.7 out of 5 stars | | Item Type Name | SPARK_PLUG | | Item Weight | 41 g | | Manufacturer | NGK | | Manufacturer Part Number | DCPR7EIX | | Model | DCPR7EIX | | Number Of Items | 2 | | Thread Size | 12mm | | Top Material Type | Metal | | Unit Count | 2.0 Count | | Upc | 700155016542 | | What Is In The Box | NGK DCPR7EIX | ## Product Details - **Brand:** NGK - **Core Material:** Iridium - **Thread Size:** 12mm - **Top Material Type:** Metal - **Vehicle Service Type:** Motorcycle ## Images ![Iridium IX DCPR7EIX Spark Plugs for 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 ### ⭐⭐⭐⭐⭐ Working as expected *by on Reviewed in India 4 December 2023* OEM fit for Harley Davidson Fatboy 103 Ci twin cam engine. Smooth starting and running. ### ⭐⭐⭐⭐⭐ Good spark plugs for my Harley Fat Bob *by on Reviewed in India 6 November 2023* Using these for the past many years, good replacement for OEM spark plugs ### ⭐⭐⭐⭐⭐ Harley-Davidson *by on Reviewed in the United Kingdom 10 April 2025* Good update for my Harley ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/334292066-iridium-ix-dcpr7eix-spark-plugs-for-1999-2016-harley-davidson](https://www.desertcart.pt/products/334292066-iridium-ix-dcpr7eix-spark-plugs-for-1999-2016-harley-davidson) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-09-05*