--- product_id: 12508559 title: "NGK Iridium IX DCPR7EIX Spark Plugs Compatible with 1999-2016 Harley Davidson Twin Cam (Pair)" brand: "ngk" price: "164.90 DT" currency: TND in_stock: true reviews_count: 13 category: "Ngk" url: https://www.desertcart.tn/products/12508559-ngk-iridium-ix-dcpr7eix-spark-plugs-compatible-with-1999-2016 store_origin: TN region: Tunisia --- # Up to 3HP boost Pre-gapped for perfect fit Enhanced anti-corrosion plating NGK Iridium IX DCPR7EIX Spark Plugs Compatible with 1999-2016 Harley Davidson Twin Cam (Pair) **Brand:** ngk **Price:** 164.90 DT **Availability:** ✅ In Stock ## Summary > ⚡ Ignite your ride with precision power and unmatched durability! ## 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?** 164.90 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/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 - • **Iridium Edge Tech:** Ultra-small 25% smaller iridium electrode means stronger, more consistent sparks. - • **Power Surge Ready:** Unlock up to 3 extra horsepower instantly for that edge on the road. - • **Precision Pre-Gapped:** Install with confidence—perfect gap ensures flawless ignition every time. - • **Tailored for Twin Cam:** Specifically engineered for 1999-2016 Harley Davidson Twin Cam models—fit and performance guaranteed. - • **Durability Meets Design:** New metal shell plating resists corrosion, extending plug life and reliability. ## Overview NGK Iridium IX DCPR7EIX spark plugs deliver up to 3HP performance gains with an ultra-small iridium electrode that reduces voltage needs and extends ignition life. Pre-gapped for hassle-free installation, these plugs feature advanced anti-corrosion metal plating and are engineered specifically for 1999-2016 Harley Davidson Twin Cam motorcycles, ensuring a perfect fit and reliable, smooth throttle response. ## 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: Smooth Idle and Stronger Spark – Worth Every Penny - 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. Review: We used NGK in our British bikes back in the 70s they worked best . - Great plugs . Work better than screaming eagle in my 103 roadking . Gap them at 35 because they are fine wire . ## 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 | #2,197 in Automotive ( See Top 100 in Automotive ) #6 in Automotive Replacement Spark Plugs | | Brand | NGK | | Brand Name | NGK | | Compatible with Vehicle Type | Motorcycle | | Core Material | Nickel | | Customer Reviews | 4.7 out of 5 stars 4,889 Reviews | | Included Components | NGK DCPR7EIX | | Item Type Name | SPARK_PLUG | | Item Weight | 0.09 Pounds | | Manufacturer | NGK | | Manufacturer Part Number | DCPR7EIX | | Manufacturer Warranty Description | Manufacturer Warranty | | Model Number | DCPR7EIX | | Number of Items | 2 | | Top Material Type | Metal | | UPC | 700155016542 | | Unit Count | 2.0 Count | | Vehicle Service Type | Motorcycle | ## Product Details - **Automotive Fit Type:** Vehicle Specific Fit - **Brand:** NGK - **Core Material:** Nickel - **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) ## 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 ### ⭐⭐⭐⭐⭐ Smooth Idle and Stronger Spark – Worth Every Penny *by J***C on February 10, 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. ### ⭐⭐⭐⭐⭐ We used NGK in our British bikes back in the 70s they worked best . *by K***D on April 29, 2026* Great plugs . Work better than screaming eagle in my 103 roadking . Gap them at 35 because they are fine wire . ### ⭐⭐⭐⭐⭐ good quality, good price, fast shipping *by E***. on April 16, 2026* good quality, good price, fast shipping ## 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.tn/products/12508559-ngk-iridium-ix-dcpr7eix-spark-plugs-compatible-with-1999-2016](https://www.desertcart.tn/products/12508559-ngk-iridium-ix-dcpr7eix-spark-plugs-compatible-with-1999-2016) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-04*