--- product_id: 272580494 title: "9621 OE Fine Wire Double Iridium Spark Plug - Single" brand: "bosch" price: "92 zł" currency: PLN in_stock: true reviews_count: 6 url: https://www.desertcart.pl/products/272580494-9621-oe-fine-wire-double-iridium-spark-plug-single store_origin: PL region: Poland --- # 4X longer lifespan 24% less voltage needed Corrosion-resistant nickel threads 9621 OE Fine Wire Double Iridium Spark Plug - Single **Brand:** bosch **Price:** 92 zł **Availability:** ✅ In Stock ## Summary > ⚡ Spark your drive with Bosch’s double iridium power — because your engine deserves the best! ## Quick Answers - **What is this?** 9621 OE Fine Wire Double Iridium Spark Plug - Single by bosch - **How much does it cost?** 92 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/272580494-9621-oe-fine-wire-double-iridium-spark-plug-single) ## 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 - • **OEM Perfect Fit:** Meets or exceeds original equipment specs for seamless compatibility with modern GDI engines. - • **Built to Outlast:** Experience 4 times the durability of standard copper plugs, reducing replacements and downtime. - • **Trusted Brand Legacy:** Bosch’s double iridium tech delivers consistent performance across top vehicle models. - • **Ignite with Precision:** 360° laser-welded ultra-fine iridium wire ensures superior ignitability and engine efficiency. - • **Effortless Installation:** Pre-gapped and nickel-plated threads mean no anti-seize needed—get back on the road faster. ## Overview The Bosch 9621 OE Fine Wire Double Iridium Spark Plug features a 360-degree laser-welded ultra-fine iridium firing pin and ground electrode, delivering 4X longer life and up to 24% reduced voltage requirements compared to standard plugs. Nickel-plated rolled threads resist corrosion and eliminate the need for anti-seize, while factory pre-gapping ensures quick, hassle-free installation. Designed to meet or exceed OEM standards, it’s compatible with a wide range of modern gasoline engines, including GDI models from Infiniti, Lexus, Mazda, Nissan, and more. ## Description Full description not available ## Features - Bosch Double Iridium Spark Plugs feature both an iridium firing pin and an iridium ground electrode inlay that offer higher performance and 4X longer life compared to standard copper spark plugs - 360-degree laser welded ultra-fine wire iridium firing pin provides better ignitability - reducing voltage requirements up to 24% - and enhanced durability - Nickel-plated rolled threads provide superior resistance to corrosion and do not require anti-seize - making installation quick and easy - Bosch 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 - Meets or exceeds manufacturer design requirements for OE fit, form, and function for modern gasoline engines - including Gasoline Direct Injection (GDI) engines - Compatible with select vehicles (Note: engine affects fitment - verify specific fitment details with desertcart confirmed fit fit checker above): INFINITI: 2008-12 EX35, 2013 EX37, 2009-12 FX35, 2013 FX37, 2009-13 FX50, 2011-12 G25, 2007-08 G35, 2008-13 G37 - Compatible with (continued):LEXUS: 2013 JX35, 2009-10 M35, 2012-13 M35h, 2011-13 M37, 2011-13 M56, 2015 Q40, 2014-18 Q50, 2014-16 Q60, 2014-19 Q70, 2015-19 Q70L, 2014-17 QX50, 2011-13 QX56, 2014-23 QX60, 2014-20 QX70, 2014-23 QX80 - Compatible with (continued): MAZDA: 2015-16,2018-21 2, 2012-23 3, 2014-21 6, 2016-21 CX-3, 2020-23 CX-30, 2013-23 CX-5, 2023 CX-50, 2016-23 Miata; NISSAN: 2007-09 350Z, 2009-20 370Z, 2007-23 Altima, 2017-22 Armada, 2006-08 Frontier, 2020-23 Frontier - Compatible with (continued): NISSAN: 2009-23 Maxima, 2009-23 Murano, 2020 NV200, 2018-21 NV2500, 2018-21 NV3500, 2013-23 Pathfinder, 2011-17 Quest, 2008-13 Rogue, 2014-15 Rogue Select, 2007-22 Sentra, 2017-23 Titan, 2016-23 Titan XD - Compatible with (continued): PONTIAC: 2009-10 Vibe; SCION: 2016 iA; TOYOTA: 2016-20 Yaris, 2017-18 Yaris iA, 2016-20 Yaris R ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | Bosch | | Core Material | Iridium | | Thread Size | 12mm | | Top Material Type | Nickel | | Vehicle Service Type | Car | | Global Trade Identification Number | 00028851034258 | | Automotive Fit Type | Vehicle Specific Fit | | UPC | 028851034258 | | OEM Part Number | 9621 | | Manufacturer | Bosch Automotive | | Model | Spark Plug | | Item Weight | 1.44 ounces | | Product Dimensions | 0.94 x 4.02 x 1.06 inches | | Item model number | 9621_1 | | Exterior | Machined | | Manufacturer Part Number | 9621 | ## Product Details - **Brand:** BOSCH - **Core material:** Iridium - **Thread size:** 12mm - **Top material type:** Nickel - **Vehicle service type:** Car ## Images ![9621 OE Fine Wire Double Iridium Spark Plug - Single - Image 1](https://m.media-amazon.com/images/I/71FZXJroy2L.jpg) ## Customer Reviews ### ⭐ A failed product that's not worth buying. *by N***R on Reviewed in the United Arab Emirates on 27 September 2020* I sent a failed product with a flag that was confirmed by the salesman. ### ⭐⭐⭐⭐⭐ Quality plug, quality pedigree. *by D***S on Reviewed in the United Kingdom on 18 August 2016* It's very difficult to write a review on spark plugs, as its the type of product that is fitted and ignored or forgotten. All I can say is that the difference to have a new set of plugs fitted compared to those old plugs that have been coughing and spluttering over time, can be noticeable, and your Car will thank you for renewing them, maybe a few more miles to the gallon and less hiccups?. My only suggestion is to stick with a good quality plug such as Bosch, as they will outlive cheaper versions. ### ⭐⭐ Not recommended, Expected better quality *by A***D on Reviewed in the United Kingdom on 6 March 2019* The picture in the ad is a way of what I found. It's like used or installed before as you can see from the picture the screw lines are not like new and not shiny like new and is not straight there are a little hits on it . Also the packing is very bad and two of it were opened, I did not install it yet but I was expecting to be looked like the pic in the ad. No Recommendation. ## Frequently Bought Together - BOSCH 9621 OE Fine Wire Double Iridium Spark Plug - Single - Mobil 1 Extended Performance Full Synthetic Motor Oil 0W-20, 5 Quart - K&N Select Oil Filter: Designed to Protect your Engine: Fits Select INFINITI/MAZDA/NISSAN/SUBARU Vehicle Models (See Product Description for Full List of Compatible Vehicles), SO-1008 --- ## 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.pl/products/272580494-9621-oe-fine-wire-double-iridium-spark-plug-single](https://www.desertcart.pl/products/272580494-9621-oe-fine-wire-double-iridium-spark-plug-single) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-29*