--- product_id: 86992814 title: "Automotive 0242135529 9619 Double Iridium Spark Plug, Up to 4X Longer Life (Pack of 4) (9621)" brand: "bosch" price: "€ 49.06" currency: EUR in_stock: true reviews_count: 8 category: "Bosch" url: https://www.desertcart.hr/products/86992814-automotive-0242135529-9619-double-iridium-spark-plug-up-to-4x store_origin: HR region: Croatia --- # 4X longer lifespan 24% less voltage needed No anti-seize needed Automotive 0242135529 9619 Double Iridium Spark Plug, Up to 4X Longer Life (Pack of 4) (9621) **Brand:** bosch **Price:** € 49.06 **Availability:** ✅ In Stock ## Summary > ⚡ Spark your engine’s potential with Bosch Double Iridium – performance that lasts and impresses! ## Quick Answers - **What is this?** Automotive 0242135529 9619 Double Iridium Spark Plug, Up to 4X Longer Life (Pack of 4) (9621) by bosch - **How much does it cost?** € 49.06 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/86992814-automotive-0242135529-9619-double-iridium-spark-plug-up-to-4x) ## 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 - • **Ignite with Precision:** 360° laser-welded ultra-fine iridium wire ensures lightning-fast, reliable sparks every time. - • **Plug & Play Simplicity:** Factory pre-gapped and nickel-plated threads mean effortless installation—no extra tools or anti-seize required. - • **Engineered for Endurance:** Double iridium electrodes deliver 4X the lifespan of standard plugs—upgrade your drive and forget frequent replacements. - • **Optimized for Modern Engines:** OE-matched design perfectly fits Gasoline Direct Injection (GDI) engines for peak performance and efficiency. - • **Trusted by Pros, Loved by Drivers:** Compatible with a wide range of premium vehicles from Infiniti to Toyota—join thousands who demand Bosch quality. ## Overview Bosch 9621 OE Fine Wire Double Iridium Spark Plugs combine ultra-fine iridium firing pins and ground electrodes with 360-degree laser welding to reduce voltage needs by 24% and extend spark plug life by 4X compared to copper plugs. Pre-gapped and corrosion-resistant, these plugs ensure easy installation and optimal performance for modern GDI engines across multiple premium vehicle brands. ## 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. Review: Very Expensive - Had one cylinder misfiring so replaced coil and spark plug. Runs fine now, but old plug looked shot after only 5 months so I think the coil was the problem. Really good plug so far but very expensive. Review: Very good - The best quality. Runs like new again. ## 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 | |---------------|-------| | ASIN | B0762GB2TM | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #11,757 in Automotive ( See Top 100 in Automotive ) #64 in Automotive Replacement Spark Plugs | | Brand Name | Bosch | | Compatible with Vehicle Type | Car, SUV, Truck | | Core Material | Iridium | | Customer Reviews | 4.5 4.5 out of 5 stars (548) | | 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 | | Thread Size | 12mm | | Top Material Type | Iridium | | UPC | 028851034265 | | Unit Count | 4.0 Count | ## Product Details - **Brand:** Bosch - **Core Material:** Iridium - **Thread Size:** 12mm - **Top Material Type:** Iridium - **Vehicle Service Type:** Car, SUV, Truck ## Images ![Automotive 0242135529 9619 Double Iridium Spark Plug, Up to 4X Longer Life (Pack of 4) (9621) - Image 1](https://m.media-amazon.com/images/I/71FZXJroy2L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very Expensive *by J***. on February 12, 2026* Had one cylinder misfiring so replaced coil and spark plug. Runs fine now, but old plug looked shot after only 5 months so I think the coil was the problem. Really good plug so far but very expensive. ### ⭐⭐⭐⭐⭐ Very good *by A***A on March 12, 2026* The best quality. Runs like new again. ### ⭐⭐⭐⭐⭐ Upgrade from OEM *by B***I on February 11, 2026* After seeing a quite ludicrous $403 quote to change 4 spark plugs in a Mazda3 I decided to show my son how easy it is. These were an upgrade from OEM parts. They were gapped perfectly for the car. They took 20mins to fit and work fine. --- ## 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.hr/products/86992814-automotive-0242135529-9619-double-iridium-spark-plug-up-to-4x](https://www.desertcart.hr/products/86992814-automotive-0242135529-9619-double-iridium-spark-plug-up-to-4x) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-04-26*