--- product_id: 86992814 title: "BOSCH 9621 OE Fine Wire Double Iridium Spark Plug - Advanced Original Equipment Technology with 4X Life - Pack of 4" brand: "bosch" price: "MX$1666" currency: MXN in_stock: true reviews_count: 13 category: "Bosch" url: https://www.desertcart.mx/products/86992814-bosch-9621-oe-fine-wire-double-iridium-spark-plug-advanced store_origin: MX region: Mexico --- # 4X longer lifespan 24% less voltage needed Factory pre-gapped, ready to install BOSCH 9621 OE Fine Wire Double Iridium Spark Plug - Advanced Original Equipment Technology with 4X Life - Pack of 4 **Brand:** bosch **Price:** MX$1666 **Availability:** ✅ In Stock ## Summary > ⚡ Ignite Performance, Extend Life, Drive Confidently! ## Quick Answers - **What is this?** BOSCH 9621 OE Fine Wire Double Iridium Spark Plug - Advanced Original Equipment Technology with 4X Life - Pack of 4 by bosch - **How much does it cost?** MX$1666 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/86992814-bosch-9621-oe-fine-wire-double-iridium-spark-plug-advanced) ## Best For - bosch enthusiasts ## Why This Product - Trusted bosch brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last ⏳:** Laser-welded double iridium electrodes deliver 4X the lifespan of standard plugs, keeping your engine firing strong longer. - • **Effortless Ignition ⚡:** Ultra-fine iridium wire reduces voltage demand by up to 24%, ensuring quicker, more reliable starts every time. - • **Plug & Play Precision 🔩:** Pre-gapped at the factory for perfect fit and function—no adjustments needed, saving you time and hassle. - • **OEM-Grade Compatibility 🚗:** Meets or exceeds manufacturer specs for Gasoline Direct Injection (GDI) engines, guaranteeing seamless integration. - • **Corrosion-Resistant Threads 🛡️:** Nickel-plated rolled threads resist corrosion and galling, making removal smooth and maintenance stress-free. ## Overview Bosch 9621 OE Fine Wire Double Iridium Spark Plugs combine cutting-edge laser-welded iridium technology with factory pre-gapping to deliver superior ignitability, 4X longer durability, and perfect OEM fit for modern gasoline engines including GDI. Designed for professionals who demand reliability and efficiency, these plugs reduce voltage requirements by 24%, resist corrosion, and ensure hassle-free installation—unlocking smoother rides and improved fuel economy. ## Description Bosch OE Fine Wire Double Iridium Spark Plugs are engineered to deliver both high performance and long life, representing advanced original equipment (OE) spark plug technology. The ultra-fine wire design and laser welded tapered ground electrode deliver optimum performance, while the iridium center electrode and iridium ground electrode inlay help it to go the distance. OE-matched spark position ensures compatibility with Gasoline Direct Injection (GDI) technology used in modern gas engines. Bosch OE Fine Wire Double Iridium spark plugs are pre-gapped at the factory and ready to install right out of the box - gap adjustment prior to installation not required. The Nickel-plated rolled threads provide maximum resistance to corrosion - ensuring the spark plug removes easily from the cylinder head without galling - and do not require anti-seize during installation - saving time. Bosch Double Iridium Spark Plugs meet or exceed manufacturer design requirements for OE fit, form, and function for modern gasoline engines. Unlock the performance in your engine with Bosch Double Iridium Spark Plugs. Review: Near OEM quality at 1/4 cost - Near OEM performance at 25% of the cost! Bosch Quality replaced NGKs/Toyota OEMs. Great value and now the engine is running smoothly! I have seen a slight improvement in my mpg @1mpg overall in mixed driving conditions. Review: Mejor opción que las originales Mazda - Excelentes como siempre Bosch ## Features - 360-degree laser welded ultra-fine wire iridium firing pin provides better ignitability - reducing voltage requirements up to 24% - and enhanced durability - Meets or exceeds manufacturer design requirements for OE fit, form, and function for modern gasoline engines - including Gasoline Direct Injection (GDI) engines ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0762GB2TM | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #18,614 in Automotive ( See Top 100 in Automotive ) #106 in Automotive Replacement Spark Plugs | | Brand | Bosch | | Brand Name | Bosch | | Compatible with Vehicle Type | Car, SUV, Truck | | Core Material | Iridium | | Customer Reviews | 4.6 out of 5 stars 641 Reviews | | Gap Size | 0.04 inches | | Global Trade Identification Number | 00028851034265 | | Included Components | Spark Plugs | | Item Type Name | Spark Plugs | | Manufacturer | Bosch Automotive | | Manufacturer Part Number | 9621 | | Manufacturer Warranty Description | Limited | | Model Number | 9621 | | Number of Items | 1 | | Thread Size | 12mm | | Top Material Type | Iridium | | UPC | 028851034265 | | Unit Count | 4 Count | | Vehicle Service Type | Car, SUV, Truck | ## Product Details - **Brand:** Bosch - **Core Material:** Iridium - **Thread Size:** 12mm - **Top Material Type:** Iridium - **Vehicle Service Type:** Car, SUV, Truck ## Images ![BOSCH 9621 OE Fine Wire Double Iridium Spark Plug - Advanced Original Equipment Technology with 4X Life - Pack of 4 - Image 1](https://m.media-amazon.com/images/I/71FZXJroy2L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Near OEM quality at 1/4 cost *by R***R on April 22, 2026* Near OEM performance at 25% of the cost! Bosch Quality replaced NGKs/Toyota OEMs. Great value and now the engine is running smoothly! I have seen a slight improvement in my mpg @1mpg overall in mixed driving conditions. ### ⭐⭐⭐⭐⭐ Mejor opción que las originales Mazda *by M***R on August 8, 2026* Excelentes como siempre Bosch ### ⭐⭐⭐⭐⭐ Quality Spark plugs *by S***H on August 2, 2026* Installed in my Mazda 6 and now it's running much better --- ## 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.mx/products/86992814-bosch-9621-oe-fine-wire-double-iridium-spark-plug-advanced](https://www.desertcart.mx/products/86992814-bosch-9621-oe-fine-wire-double-iridium-spark-plug-advanced) --- *Product available on Desertcart Mexico* *Store origin: MX* *Last updated: 2026-08-20*