--- product_id: 24020782 title: "9621 OE Fine Wire Double Iridium Spark Plug - Single" brand: "bosch" price: "79 zł" currency: PLN in_stock: true reviews_count: 8 url: https://www.desertcart.pl/products/24020782-9621-oe-fine-wire-double-iridium-spark-plug-single store_origin: PL region: Poland --- # 4X longer lifespan 24% less voltage needed Nickel-plated corrosion resistance 9621 OE Fine Wire Double Iridium Spark Plug - Single **Brand:** bosch **Price:** 79 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?** 79 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/24020782-9621-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 - • **Ready Out of the Box:** Factory pre-gapped for hassle-free installation—no adjustments needed, saving you time and effort. - • **Ignite with Precision:** 360° laser-welded ultra-fine iridium firing pin ensures superior ignitability and engine efficiency. - • **Built to Last 4X Longer:** Double iridium electrodes deliver unmatched durability, outlasting standard copper plugs by four times. - • **Engineered for Modern Power:** Meets or exceeds OE specs for Gasoline Direct Injection engines across top vehicle brands. - • **Corrosion-Proof Installation:** Nickel-plated rolled threads resist corrosion and eliminate the need for anti-seize compounds. ## Overview Bosch Double Iridium Spark Plugs feature a 360-degree laser-welded ultra-fine iridium firing pin and ground electrode, reducing voltage requirements by up to 24% and lasting 4 times longer than standard copper plugs. With nickel-plated corrosion-resistant threads and factory pre-gapping, these plugs offer easy installation and superior performance, meeting or exceeding OEM standards for modern gasoline engines including GDI. Compatible with a wide range of Infiniti, Lexus, Mazda, Nissan, Pontiac, Scion, and Toyota models. ## Description Product Description Bosch 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 Double Iridium Spark Plugs are pre-gapped at the factory and feature nickel plated rolled threads that require no anti-seize, for simple, easy installation right out of the box. Unlock the performance in your engine with Bosch Double Iridium Spark Plugs. brand_description Bosch Automotive ## 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 ### ⭐⭐⭐⭐⭐ Great Product/Great price *by D***W on January 26, 2020* Did a tune up for my pruis. Everything was great and at a great price. ### ⭐⭐⭐⭐⭐ Tip: Use Flexible Tubing To Install New Plugs On 2009-2014 Corolla *by S***Y on November 4, 2019* Installed on 2009 Corolla. Gas mileage has improved by 2 mpg. You will need a 9/16" spark plug socket (https://www.amazon.com/gp/product/B004FEPFSY) for a 2009 - 2014 Corolla. The skirting around the top of the hood prevents you from using a single long extension to remove the old plugs. Instead, I had to use 2 small extensions, attaching the spark plug socket to one small extension, then adding another extension when the spark plug socket and first small extension were down in the cylinder. Because of the skirting around the hood and the fact that you have to use multiple small extensions, you cannot simply replace the plugs using the 9/16" plug socket. The extensions will separate in the cylinder before the plug socket comes free. Instead, use a piece of flexible tubing from a hardware store to reinstall the new spark plugs. The tubing you get should allow the white part of the plug to go up into the tube and not allow the plug to fall out when held vertically. You don't want to just drop the new plugs in the cylinders because the spark gap can be moved due to an impact with the bottom of the cylinder. Hope this helps! ### ⭐⭐⭐⭐⭐ Fits perfectly on Prius V 2013 *by N***J on September 7, 2019* So far so good. Fits perfectly on prius v 2013. Hoping it will last long for another 100k miles. ## 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/24020782-9621-oe-fine-wire-double-iridium-spark-plug-single](https://www.desertcart.pl/products/24020782-9621-oe-fine-wire-double-iridium-spark-plug-single) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-24*