--- product_id: 254497229 title: "NGK Iridium IX DCPR7EIX Spark Plugs for 1999-2016 Harley Davidson Twin Cam (Pair)" brand: "ngk" price: "VT14447" currency: VUV in_stock: true reviews_count: 5 category: "Ngk" url: https://www.desertcart.vu/products/254497229-ngk-iridium-ix-dcpr7eix-spark-plugs-for-1999-2016-harley store_origin: VU region: Vanuatu --- # Up to 3HP power boost Pre-gapped for perfect fit Enhanced anti-corrosion plating NGK Iridium IX DCPR7EIX Spark Plugs for 1999-2016 Harley Davidson Twin Cam (Pair) **Brand:** ngk **Price:** VT14447 **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 for 1999-2016 Harley Davidson Twin Cam (Pair) by ngk - **How much does it cost?** VT14447 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/254497229-ngk-iridium-ix-dcpr7eix-spark-plugs-for-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 - • **Power Surge Ready:** Unlock up to 3 extra horsepower and feel the difference on every ride. - • **Harley-Optimized Fit:** Specifically engineered for 1999-2016 Harley Davidson Twin Cam engines for OEM-level performance. - • **Precision Pre-Gapped:** Save time and ensure flawless ignition with factory-set gaps. - • **Next-Gen Iridium Tech:** Ultra-small 25% smaller iridium electrode means lower voltage needs and longer ignition life. - • **Corrosion-Resistant Armor:** New metal shell plating guards against rust and wear for lasting durability. ## 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 engines, these plugs boost horsepower by up to 3HP while extending ignition system life and ensuring smooth, reliable starts. ## 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: OEM fit for Harley Davidson Fatboy 103 Ci twin cam engine. Smooth starting and running. Review: Good update for my Harley ## 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 | #36,784 in Automotive ( See Top 100 in Automotive ) #142 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 (4,640) | | Included Components | NGK DCPR7EIX | | Item Type Name | SPARK_PLUG | | Item Weight | 0.09 Pounds | | Manufacturer | NGK | | Manufacturer Part Number | DCPR7EIX | | Model Number | DCPR7EIX | | Thread Size | 12mm | | Top Material Type | Metal | | UPC | 700155016542 | | Unit Count | 2.0 Count | ## Product Details - **Brand:** NGK - **Core material:** Nickel - **Thread size:** 12mm - **Top material type:** Metal - **Vehicle service type:** Motorcycle ## Images ![NGK Iridium IX DCPR7EIX Spark Plugs for 1999-2016 Harley Davidson Twin Cam (Pair) - Image 1](https://m.media-amazon.com/images/I/61RTkqyQPKL.jpg) ![NGK Iridium IX DCPR7EIX Spark Plugs for 1999-2016 Harley Davidson Twin Cam (Pair) - Image 2](https://m.media-amazon.com/images/I/611Y2nuqEKL.jpg) ![NGK Iridium IX DCPR7EIX Spark Plugs for 1999-2016 Harley Davidson Twin Cam (Pair) - Image 3](https://m.media-amazon.com/images/I/51brgIiPHZL.jpg) ![NGK Iridium IX DCPR7EIX Spark Plugs for 1999-2016 Harley Davidson Twin Cam (Pair) - Image 4](https://m.media-amazon.com/images/I/51USojYP9lL.jpg) ![NGK Iridium IX DCPR7EIX Spark Plugs for 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 ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by B***6 on 4 December 2023* OEM fit for Harley Davidson Fatboy 103 Ci twin cam engine. Smooth starting and running. ### ⭐⭐⭐⭐⭐ Review *by M***M on 10 April 2025* Good update for my Harley ### ⭐⭐⭐⭐⭐ Review *by J***C on 10 February 2026* Installed these NGK Iridium IX DCPR7EIX spark plugs in my 1999–2016 Harley Davidson Twin Cam, and the difference was noticeable right away. The bike fired up quicker, idled smoother, and throttle response felt more crisp. NGK quality speaks for itself. The iridium tip is known for durability and a strong, consistent spark, and that’s exactly what you get. They feel like a premium upgrade over standard plugs, especially if you ride often or want dependable performance. Fitment was perfect, no issues with installation, and they came properly packaged as a matched pair. For the price, it’s a solid upgrade that improves reliability and performance without breaking the bank. If you’re running a Twin Cam and want better ignition performance and long service life, these are an easy 5-star choice. ## 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.vu/products/254497229-ngk-iridium-ix-dcpr7eix-spark-plugs-for-1999-2016-harley](https://www.desertcart.vu/products/254497229-ngk-iridium-ix-dcpr7eix-spark-plugs-for-1999-2016-harley) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-04-23*