--- product_id: 264453355 title: "LKAR6AIX-11 Iridium IX Spark Plug (91187 Iridium Ix), 4 Pack" brand: "ngk" price: "R1237" currency: ZAR in_stock: true category: "Ngk" url: https://www.desertcart.co.za/products/264453355-lkar6aix-11-iridium-ix-spark-plug-91187-iridium-ix-4 store_origin: ZA region: South Africa --- # 0.6mm laser-welded iridium tip High melting point for extreme durability Triple gasket seal prevents gas leakage LKAR6AIX-11 Iridium IX Spark Plug (91187 Iridium Ix), 4 Pack **Brand:** ngk **Price:** R1237 **Availability:** ✅ In Stock ## Summary > ⚡ Ignite your drive with precision and power — don’t get left in the dust! ## Quick Answers - **What is this?** LKAR6AIX-11 Iridium IX Spark Plug (91187 Iridium Ix), 4 Pack by ngk - **How much does it cost?** R1237 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/264453355-lkar6aix-11-iridium-ix-spark-plug-91187-iridium-ix-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 - • **Leak-Free Performance:** Triple gasket seal ensures zero combustion gas leakage for consistent power output. - • **Race-Ready Durability:** Iridium alloy withstands extreme heat and wear, engineered for high-performance engines. - • **Precision Ignition Power:** 0.6mm fine iridium tip delivers a razor-sharp, stable spark for peak engine performance. - • **Advanced Fouling Protection:** Longer insulator nose and corrugated ribs prevent fouling and flashover, keeping your engine clean. - • **Optimized Combustion Efficiency:** Tapered ground electrode minimizes quenching, boosting throttle response and fuel efficiency. ## Overview The NGK LKAR6AIX-11 Iridium IX Spark Plug 4-pack is engineered for performance enthusiasts seeking extreme ignitability and durability. Featuring a 0.6mm laser-welded iridium tip, tapered ground electrode, and triple gasket seal, it delivers superior throttle response, anti-fouling protection, and combustion efficiency. Designed for high-performance engines, it resists heat, corrosion, and wear, ensuring reliable power and longevity. ## 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 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07FP438JV | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #5,191 in Automotive ( See Top 100 in Automotive ) #7 in Automotive Performance Spark Plugs | | Brand Name | NGK | | Compatible with Vehicle Type | Racecar | | Core Material | Iridium | | Customer Reviews | 4.8 4.8 out of 5 stars (1,651) | | Gap Size | 0.03 Inches | | Global Trade Identification Number | 00087295811870 | | Included Components | Spark Plug (4) | | Item Type Name | Spark Plug (91187 Iridium Ix ) | | Item Weight | 0.4 Pounds | | Manufacturer | NGK | | Manufacturer Part Number | LKAR6AIX-11 | | Model Number | LKAR6AIX-11 | | OEM Equivalent Part Number | LKAR6AIX-11 | | Thread Size | 14 mm | | Top Material Type | iridium | | UPC | 087295811870 | | Unit Count | 4 Count | ## Product Details - **Brand:** NGK - **Core material:** Iridium - **Thread size:** 14 mm - **Top material type:** iridium - **Vehicle service type:** Racecar ## Images ![LKAR6AIX-11 Iridium IX Spark Plug (91187 Iridium Ix), 4 Pack - Image 1](https://m.media-amazon.com/images/I/71gXB9P6XSL.jpg) ## Questions & Answers **Q: Are these plugs pre-gapped ?** A: They should be. THOUGH, and I stress, it wouldn't hurt to check them prior to installing them. I've purchased pre-gapped plugs before and they were off just a bit. 39 vs 44 as an example. **Q: What is the expected milage for these?** A: 40-50k miles (more expensive OE 9029 are rated 80-100k miles). Ref. ngksparkplugsdotcom **Q: Are these 5/8 spark plugs?** A: These sparkplugs are 14mm or 9/16. Socket fits snug with either one you wish to go with . Strongly suggest the magnetic spark plug socket . **Q: Will this fit a 2015 Nissan rouge sv?** A: Amazon site should tell if they fit. ## Frequently Bought Together - NGK LKAR6AIX-11 Iridium IX Spark Plug (91187 Iridium Ix), 4 Pack - FEL-PRO MS 97038 Intake Manifold Gasket Set - Hitachi IGC0002 Ignition Coil --- ## 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.co.za/products/264453355-lkar6aix-11-iridium-ix-spark-plug-91187-iridium-ix-4](https://www.desertcart.co.za/products/264453355-lkar6aix-11-iridium-ix-spark-plug-91187-iridium-ix-4) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-07-06*