--- product_id: 12508559 title: "NGK Iridium IX DCPR7EIX Spark Plugs Compatible with 1999-2016 Harley Davidson Twin Cam (Pair)" brand: "ngk" price: "€ 38.20" currency: EUR in_stock: true category: "Ngk" url: https://www.desertcart.pt/products/12508559-ngk-iridium-ix-dcpr7eix-spark-plugs-compatible-with-1999-2016 store_origin: PT region: Portugal --- # Up to 3HP power boost Pre-gapped for instant install Enhanced anti-corrosion metal shell NGK Iridium IX DCPR7EIX Spark Plugs Compatible with 1999-2016 Harley Davidson Twin Cam (Pair) **Brand:** ngk **Price:** € 38.20 **Availability:** ✅ In Stock ## Summary > ⚡ Ignite your Harley’s true potential with NGK Iridium IX! ## Quick Answers - **What is this?** NGK Iridium IX DCPR7EIX Spark Plugs Compatible with 1999-2016 Harley Davidson Twin Cam (Pair) by ngk - **How much does it cost?** € 38.20 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/12508559-ngk-iridium-ix-dcpr7eix-spark-plugs-compatible-with-1999-2016) ## 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 - • **Power Surge Ready:** Unlock up to 3 extra horsepower with cutting-edge iridium tech. - • **Corrosion? Not Here.:** New metal shell plating resists rust and keeps your ride reliable season after season. - • **Plug & Play Precision:** Comes pre-gapped for hassle-free, perfect ignition every time. - • **Trusted Leader's Edge:** From NGK, the industry pioneer with 4.7-star rave reviews and proven performance. - • **Mini Electrode, Mega Impact:** Ultra-small 25% smaller iridium electrode slashes voltage needs and extends ignition life. ## Overview NGK Iridium IX DCPR7EIX spark plugs deliver up to 3HP gain with ultra-small iridium electrodes that reduce voltage requirements and extend ignition system life. Pre-gapped for easy installation, these plugs feature a new anti-corrosion metal shell plating, ensuring durability and peak performance for 1999-2016 Harley Davidson Twin Cam models. ## 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 | #2,273 in Automotive ( See Top 100 in Automotive ) #9 in Automotive Replacement Spark Plugs | | Brand Name | NGK | | Compatible with Vehicle Type | Motorcycle | | Core Material | Nickel | | Customer Reviews | 4.7 4.7 out of 5 stars (4,899) | | Included Components | NGK DCPR7EIX | | Item Type Name | SPARK_PLUG | | Item Weight | 1.44 ounces | | Manufacturer | NGK | | Manufacturer Part Number | DCPR7EIX | | Manufacturer Warranty Description | Manufacturer Warranty | | Model Number | DCPR7EIX | | Top Material Type | Metal | | UPC | 700155016542 | | Unit Count | 2.0 Count | ## Product Details - **Brand:** NGK - **Core Material:** Nickel - **Number of Items:** 2 - **Top Material Type:** Metal - **Vehicle Service Type:** Motorcycle ## Images ![NGK 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) ![NGK Iridium IX DCPR7EIX Spark Plugs Compatible with 1999-2016 Harley Davidson Twin Cam (Pair) - Image 2](https://m.media-amazon.com/images/I/611Y2nuqEKL.jpg) ![NGK Iridium IX DCPR7EIX Spark Plugs Compatible with 1999-2016 Harley Davidson Twin Cam (Pair) - Image 3](https://m.media-amazon.com/images/I/51brgIiPHZL.jpg) ![NGK Iridium IX DCPR7EIX Spark Plugs Compatible with 1999-2016 Harley Davidson Twin Cam (Pair) - Image 4](https://m.media-amazon.com/images/I/51USojYP9lL.jpg) ![NGK Iridium IX DCPR7EIX Spark Plugs Compatible with 1999-2016 Harley Davidson Twin Cam (Pair) - Image 5](https://m.media-amazon.com/images/I/61Fmn0gQobL.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 ## 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/12508559-ngk-iridium-ix-dcpr7eix-spark-plugs-compatible-with-1999-2016](https://www.desertcart.pt/products/12508559-ngk-iridium-ix-dcpr7eix-spark-plugs-compatible-with-1999-2016) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-06-13*