--- product_id: 254497229 title: "Iridium IX DCPR7EIX Spark Plugs for 1999-2016 Harley Davidson Twin Cam (Pair)" brand: "ngk" price: "€ 50.44" currency: EUR in_stock: true reviews_count: 5 url: https://www.desertcart.be/products/254497229-iridium-ix-dcpr7eix-spark-plugs-for-1999-2016-harley-davidson store_origin: BE region: Belgium --- # Up to 3HP boost 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:** € 50.44 **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 for 1999-2016 Harley Davidson Twin Cam (Pair) by ngk - **How much does it cost?** € 50.44 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/254497229-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 - • **Iridium Edge Tech:** Ultra-small 25% smaller iridium electrode slashes voltage needs and extends ignition life. - • **Power Surge Ready:** Unlock up to 3 extra horsepower instantly for your Harley’s Twin Cam engine. - • **Precision Pre-Gapped:** Arrives perfectly pre-set to save you time and ensure flawless ignition every ride. - • **OEM-Trusted Performance:** Specifically engineered for 1999-2016 Harley Davidson Twin Cam models, delivering smooth starts and reliable power. - • **Corrosion-Resistant Armor:** New metal shell plating guards against rust, keeping your spark plugs race-ready season after season. ## Overview NGK Iridium IX DCPR7EIX spark plugs are engineered for 1999-2016 Harley Davidson Twin Cam motorcycles, featuring a 25% smaller iridium electrode that reduces voltage requirements and extends ignition system life. Pre-gapped for perfect installation, these plugs deliver up to 3 horsepower gains and boast enhanced anti-corrosion metal shell plating for long-lasting durability. ## 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 | #35,849 in Automotive (See Top 100 in Automotive) #201 in Automotive Performance Spark Plugs | | Brand Name | NGK | | Compatible With Vehicle Type | Motorcycle | | Core Material | Nickel | | Customer Reviews | 4.7 4.7 out of 5 stars (4,883) 4.7 out of 5 stars | | Included Components | NGK DCPR7EIX | | Item Type Name | SPARK_PLUG | | Item Weight | 0.09 Pounds | | Manufacturer | NGK | | Manufacturer Part Number | DCPR7EIX | | Model Number | DCPR7EIX | | Number Of Items | 2 | | Thread Size | 12mm | | Top Material Type | Metal | | Unit Count | 2.0 Count | | Upc | 700155016542 | ## Product Details - **Brand:** NGK - **Core material:** Nickel - **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. ### ⭐⭐⭐⭐⭐ Excellent trustworthy performance *by on Reviewed in the United States 27 August 2026* NGK Iridium IX spark plugs are a great upgrade for anyone looking for reliable performance and long-lasting quality. They provide smooth starts, consistent ignition, and dependable performance. Installation was straightforward, and the build quality feels excellent. Overall, these plugs are a solid choice for improving reliability and getting consistent performance from your engine. Definitely a product I would recommend! ### ⭐⭐⭐⭐⭐ 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.be/products/254497229-iridium-ix-dcpr7eix-spark-plugs-for-1999-2016-harley-davidson](https://www.desertcart.be/products/254497229-iridium-ix-dcpr7eix-spark-plugs-for-1999-2016-harley-davidson) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-11-11*