--- product_id: 98016836 title: "NGK Spark Plug 91909 Central Electrode - Iridium & 1 Ground Electrode & with Flat Hold-Seal Key Opening: 16 mm" brand: "ngk" price: "HK$290" currency: HKD in_stock: true category: "Ngk" url: https://www.desertcart.hk/products/98016836-ngk-spark-plug-91909-central-electrode-iridium-and-1-ground store_origin: HK region: Hong Kong --- # Iridium central electrode for superior ignition 1 ground electrode for optimal spark efficiency 16 mm flat hold-seal key opening for precise fit NGK Spark Plug 91909 Central Electrode - Iridium & 1 Ground Electrode & with Flat Hold-Seal Key Opening: 16 mm **Brand:** ngk **Price:** HK$290 **Availability:** ✅ In Stock ## Summary > ⚡ Ignite your drive with NGK's precision spark – because every millisecond counts! ## Quick Answers - **What is this?** NGK Spark Plug 91909 Central Electrode - Iridium & 1 Ground Electrode & with Flat Hold-Seal Key Opening: 16 mm by ngk - **How much does it cost?** HK$290 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/98016836-ngk-spark-plug-91909-central-electrode-iridium-and-1-ground) ## 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 - • **Eco-Friendly Combustion:** Optimized spark design lowers harmful emissions, aligning with green driving values. - • **Tailored Fit Technology:** 16 mm flat hold-seal key opening guarantees seamless installation and perfect compatibility. - • **Precision Ignition Power:** Iridium electrode ensures faster, cleaner combustion for peak engine performance. - • **Trusted Legacy Since 1930:** From the world leader in spark plugs, backed by decades of innovation and reliability. - • **Durability Meets Performance:** Engineered for long service life, reducing maintenance frequency and costs. ## Overview The NGK Spark Plug 91909 features a high-grade iridium central electrode and a single ground electrode with a 16 mm flat hold-seal key opening, designed for vehicle-specific fitment. Renowned for exceptional ignitability, long service life, and reduced emissions, this spark plug is a trusted choice for professionals seeking reliable, high-performance engine ignition. ## Description Standard NGK series spark plugs are designed for stock replacement applications. Equipped with a hot spark, they offer a very good combustion, thus ensuring high performance, producing less harmful emissions. ## Features - Spark Plug 91909 LMAR8BI-9 SAE Fixed IR - NGK is the world's leading manufacturer of spark plugs - Modern production facilities and large investments in research and development make the NGK spark plug so successful. - NGK has lit sparks since 1930 - High performance, excellent ignitability and long service life ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B06X9CKC1N | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #176,440 in Automotive ( See Top 100 in Automotive ) #1,122 in Automotive Replacement Spark Plugs | | Brand Name | NGK | | Compatible with Vehicle Type | Vehicle Specific | | Core Material | Iridium | | Customer Reviews | 4.6 4.6 out of 5 stars (163) | | EU Spare Part Availability Duration | 10 Years | | Gap Size | 16 Millimeters | | Global Trade Identification Number | 00087295919095 | | Included Components | Spark Plug | | Item Type Name | CANDLES | | Item Weight | 0.02 Kilograms | | Manufacturer | Ngk | | Manufacturer Part Number | LMAR8BI-9 | | Model Number | LMAR8BI-9 [ 91909 ] | | OEM Equivalent Part Number | LMAR8BI-9 | | Thread Size | RM | | Top Material Type | Metal | | UPC | 779420925391 087295919095 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** NGK - **Core Material:** Iridium - **Thread Size:** RM - **Top Material Type:** Metal - **Vehicle Service Type:** Vehicle Specific ## Images ![NGK Spark Plug 91909 Central Electrode - Iridium & 1 Ground Electrode & with Flat Hold-Seal Key Opening: 16 mm - Image 1](https://m.media-amazon.com/images/I/81gzo4iJZRL.jpg) ![NGK Spark Plug 91909 Central Electrode - Iridium & 1 Ground Electrode & with Flat Hold-Seal Key Opening: 16 mm - Image 2](https://m.media-amazon.com/images/I/61eEqPTencL.jpg) ![NGK Spark Plug 91909 Central Electrode - Iridium & 1 Ground Electrode & with Flat Hold-Seal Key Opening: 16 mm - Image 3](https://m.media-amazon.com/images/I/71nkpzwtrCL.jpg) ## Frequently Bought Together - CANDLE NGK LMAR8BI-9 - NGK (4908 LMAR7A-9 Standard Spark Plug, Pack of 1 - K&N Motorcycle Oil Filter: High Performance, Premium, Designed to be used with Synthetic or Conventional Oils: Fits Select Honda, Kawasaki, Triumph, Yamaha Motorcycles, KN-204-1 --- ## 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.hk/products/98016836-ngk-spark-plug-91909-central-electrode-iridium-and-1-ground](https://www.desertcart.hk/products/98016836-ngk-spark-plug-91909-central-electrode-iridium-and-1-ground) --- *Product available on Desertcart Hong Kong* *Store origin: HK* *Last updated: 2026-07-21*