--- product_id: 27237536 title: "NGK (4218-4PK Iridium IX Spark Plug, (Box of 4)" brand: "ngk" price: "€ 71.97" currency: EUR in_stock: true url: https://www.desertcart.gr/products/27237536-ngk-4218-4pk-iridium-ix-spark-plug-box-of-4 store_origin: GR region: Greece --- # 0.6mm Iridium fine tip for stable spark High melting point Iridium alloy for heat durability Triple gasket seal prevents combustion gas leaks NGK (4218-4PK Iridium IX Spark Plug, (Box of 4) **Brand:** ngk **Price:** € 71.97 **Availability:** ✅ In Stock ## Summary > ⚡ Ignite your drive with NGK Iridium IX – where precision meets power! ## Quick Answers - **What is this?** NGK (4218-4PK Iridium IX Spark Plug, (Box of 4) by ngk - **How much does it cost?** € 71.97 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/27237536-ngk-4218-4pk-iridium-ix-spark-plug-box-of-4) ## 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 - • **Race-Ready Durability:** Iridium alloy withstands intense heat and electrical wear, engineered for high-performance engines that demand reliability. - • **Throttle Response Boost:** Optimized tapered ground electrode minimizes quenching effect, enhancing throttle responsiveness and acceleration. - • **Precision Ignition Power:** Laser-welded 0.6mm Iridium tip delivers extreme ignitability and consistent spark for peak engine performance. - • **Corrosion & Seize Resistant:** Trivalent metal plating ensures superior anti-corrosion and anti-seizing properties, extending spark plug lifespan. - • **Fouling & Flashover Defense:** Longer insulator nose and corrugated ribs prevent fouling and flashover, keeping your engine running clean and smooth. ## Overview NGK Iridium IX Spark Plugs (4-pack) feature a laser-welded 0.6mm fine Iridium tip for superior ignitability and durability. Designed for performance enthusiasts, they improve throttle response and resist fouling with a longer insulator nose and corrugated ribs. The high melting point Iridium alloy and triple gasket seal ensure heat resistance and combustion gas leak prevention, while trivalent metal plating protects against corrosion and seizing. Perfect for high-performance cars and trucks seeking reliable ignition upgrades. ## Description Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti fouling. The 0.6 millimeter laser welded fine Iridium tip ensures high durability and a consistently stable spark and the tapered ground electrode minimizes electrical quenching effect. Longer insulator nose prevents fouling, the corrugated ribs on insulator prevent flashover, and a triple gasket seal eliminates combustion gas leakage. Iridium alloy has extremely high melting point, giving it high durability to heat and electrical wear, perfect for today's high performance engines. Trivalent metal plating - superior anti-corrosion and anti-seizing properties. ## Features - Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling - The 0.6 millimeter laser welded fine Iridium tip ensures high durability and a consistently stable spark and the tapered ground electrode minimizes electrical quenching effect - Longer insulator nose prevents fouling, the corrugated ribs on insulator prevents flashover, and a triple gasket seal eliminates combustion gas leakage - Iridium alloy has extremely high melting point, giving it high durability to heat and electrical wear, perfect for today's high performance engines - Trivalent Metal Plating provides superior anti-corrosion and anti-seizing properties; Part number of spark plug inside the box: CR8EIX ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000BYERAO | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #1,311,238 in Automotive ( See Top 100 in Automotive ) #6,499 in Automotive Replacement Spark Plugs | | Brand Name | NGK | | Compatible with Vehicle Type | Car, Truck | | Core Material | Platinum | | Customer Reviews | 4.5 4.5 out of 5 stars (216) | | Global Trade Identification Number | 00087295042182 | | Included Components | Automotive accessories, Underwood parts, Performance Parts | | Item Highlight | Replaces 297921 0297921 AP0297921 90793-20122 90793-20124 90793-20150 90793-2B124 99000-69835-CR8 999-06910-X9-023 4189. | | Item Type Name | Iridium Ix Spark Plug | | Item Weight | 1.12 ounces | | Manufacturer | NGK | | Manufacturer Part Number | CR8EIX | | Manufacturer Warranty Description | Manufacturer Warranty | | Model Number | CR8EIX 4218 | | Number of Items | 4 | | OEM Equivalent Part Number | 297 921 | | Thread Size | 8mm | | Top Material Type | Metal | | Unit Count | 4 Count | ## Product Details - **Brand:** NGK - **Core Material:** Platinum - **Thread Size:** 8mm - **Top Material Type:** Metal - **Vehicle Service Type:** Car, Truck ## Images ![NGK (4218-4PK Iridium IX Spark Plug, (Box of 4) - Image 1](https://m.media-amazon.com/images/I/51VBHvGpzpL.jpg) ## Questions & Answers **Q: Work with a Yamaha wr450f?** A: no it does not , the best way to check what plug fits your application visit , www.ngk.com . hopefully this helps **Q: right plug for a 2014 yamaha fjr es???** A: Sure. Cut 4 threads off first. **Q: Will this fit a 50cc 4 stroke pocket bike?** A: No **Q: Will this work on a 2004 Yamaha yz450f?** A: Yes this will work in your YZ450F --- ## 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.gr/products/27237536-ngk-4218-4pk-iridium-ix-spark-plug-box-of-4](https://www.desertcart.gr/products/27237536-ngk-4218-4pk-iridium-ix-spark-plug-box-of-4) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-11-01*