--- product_id: 471862111 title: "CR9EIX - Iridium IX Spark Plug - 4-Pack/-- | Replaces RG6HCC 31600012 31600085 90793-20123 90793-20125 90793-20151 90793-2B125 99000-69835-CR9 999-06910-X9-024 4132." brand: "ngk" price: "107628CFA" currency: XOF in_stock: true reviews_count: 5 category: "Ngk" url: https://www.desertcart.sn/products/471862111-cr9eix-iridium-ix-spark-plug-4-pack-replaces-rg6hcc-31600012 store_origin: SN region: Senegal --- # Iridium core for max spark efficiency OEM-grade precision fit Made in USA quality assurance CR9EIX - Iridium IX Spark Plug - 4-Pack/-- | Replaces RG6HCC 31600012 31600085 90793-20123 90793-20125 90793-20151 90793-2B125 99000-69835-CR9 999-06910-X9-024 4132. **Brand:** ngk **Price:** 107628CFA **Availability:** ✅ In Stock ## Summary > ⚡ Ignite your drive with NGK Iridium IX – where performance meets precision! ## Quick Answers - **What is this?** CR9EIX - Iridium IX Spark Plug - 4-Pack/-- | Replaces RG6HCC 31600012 31600085 90793-20123 90793-20125 90793-20151 90793-2B125 99000-69835-CR9 999-06910-X9-024 4132. by ngk - **How much does it cost?** 107628CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/471862111-cr9eix-iridium-ix-spark-plug-4-pack-replaces-rg6hcc-31600012) ## 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 - • **Made in the USA:** Proudly manufactured domestically, guaranteeing top-tier quality and reliability. - • **Precision OEM Fit:** Engineered to exact NGK specs ensuring hassle-free installation and optimal performance. - • **Durability That Lasts:** Iridium construction resists wear and corrosion, extending spark plug life significantly. - • **Trusted by Professionals:** Rated 4.8/5 by 571 users who noticed a night-and-day difference in engine response. - • **Unmatched Ignition Power:** Iridium tip delivers superior spark for smoother starts and better fuel efficiency. ## Overview The NGK CR9EIX Iridium IX spark plug is a premium OEM replacement part featuring a durable iridium tip for enhanced ignition efficiency and longevity. Made in the USA, it offers a precise 10mm thread fit compatible with a wide range of cars. With a stellar 4.8-star rating from over 570 reviews, it’s the go-to choice for drivers seeking reliable, high-performance spark plugs that transform engine responsiveness and fuel economy. ## Description NGK OEM part# 3521 Review: Value - Good item would buy again Review: Highly recommended - Excellent night and day difference from regular plugs ## Features - Genuine, OEM Ngk Replacement Part - Ngk replacement spark plug, part number 3521 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B004SKYAWM | | Best Sellers Rank | #391,557 in Car & Motorbike ( See Top 100 in Car & Motorbike ) #2,634 in Ignitions | | Brand | NGK | | Brand Name | NGK | | Compatible with Vehicle Type | Car | | Core Material | Iridium | | Country of Origin | USA | | Customer Reviews | 4.8 out of 5 stars 571 Reviews | | Item Weight | 0.28 Pounds | | Manufacturer | NGK | | Manufacturer Part Number | CR9EIX | | Model | 3521 | | Number of Items | 1 | | OEM Equivalent Part Number | 7085731 | | Thread Size | 10mm | | Top Material Type | Iridium | | Unit Count | 1.0 Count | | Vehicle Service Type | Car | | What Is In the Box | 3521 | ## Product Details - **Brand:** NGK - **Core Material:** Iridium - **Thread Size:** 10mm - **Top Material Type:** Iridium - **Vehicle Service Type:** Car ## Images ![CR9EIX - Iridium IX Spark Plug - 4-Pack/-- | Replaces RG6HCC 31600012 31600085 90793-20123 90793-20125 90793-20151 90793-2B125 99000-69835-CR9 999-06910-X9-024 4132. - Image 1](https://m.media-amazon.com/images/I/61wBxBvQUhL.jpg) ## Questions & Answers **Q: Are these ngk 3521 cr9eix iridium ix spark plugs?** A: These are correct and they perform flawlessly! Ron **Q: Will these fit a 2019 polaris rzr turbo s** A: To be safe: check with dealer or a cross reference app to be sure. Ron **Q: Will this work on my Harley Davidson 2018 street glide special?** A: I have a 2017 Road King with the Milwaukee 8 and this is the one it calls for. **Q: Are these the right iridium plugs for an Indian scout 60?** A: NGK has multiple grades of plugs that may fit your engine. It is recommended to go to NGK site at https://ngksparkplugs.com/en/part-finder to verify the applications that will fit your engine. This site will show you all of the available plugs to fit your engine and will also show you which grade plug is recommended for the best performance of your specific engine. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Value *by S***T on 23 August 2024* Good item would buy again ### ⭐⭐⭐⭐⭐ Highly recommended *by C***S on 2 July 2026* Excellent night and day difference from regular plugs ### ⭐ Pésimo material *by O***O on 24 June 2026* Muy mala calidad del producto original. ## Frequently Bought Together - NGK CR9EIX - Iridium IX Spark Plug - 4-Pack/-- - K&N Motorcycle Oil Filter: High Performance, Premium, Designed to be used with Synthetic or Conventional Oils, Wrench Off Nut: Fits Select Suzuki Motorcycles, KN-138 - K&N Engine Air Filter: High Performance, Premium, Powersport Air Filter: Fits 2006-2010 SUZUKI (GSXR600, GSXR750) SU-7506 --- ## 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.sn/products/471862111-cr9eix-iridium-ix-spark-plug-4-pack-replaces-rg6hcc-31600012](https://www.desertcart.sn/products/471862111-cr9eix-iridium-ix-spark-plug-4-pack-replaces-rg6hcc-31600012) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-08-29*