# Dinan B48/B58/S58 Iridium Spark Plug - Heat Range 9 - 12mm x 26.5mm x 14mm (Flat) - SINGLE Dinan Iridium Spark Plugs are an excellent upgrade for tuned, and even stock engines. Our spark plugs are made from Iridium - one of the strongest materials available. They last longer than other materials with higher melting points, run cooler, resist preignition, and even require less voltage to produce a strong spark. The iridium electrode with its copper core is harder and stronger than other materials, can dissipate heat more easily, and is better protected from melting, cracking, and other limitations found with standard plugs. - 152% higher melting point than silver, 125% higher than copper, and 38% higher than platinum - Heat range 9 spark plug (Similar: Bosch 3, Brisk 10, Champion 4, Denso 27, and NGK 9) - Acceptable for high performance / tuned and stock vehicle applications alike - Optimized electrode design for hard to ignite fuels, such as ethanol - 1 step colder than OEM (Gen 1 B48, Gen 1/2 B58, & S58) - Cooler operating temperature than stock plugs - Resists preignition better than stock plugs - An excellent match for Dinan ignition coils - Stronger than copper and platinum - Lower required supplied voltage - Insulator Material: Ceramic - Projected insulator design - Thread diameter: 12mm - Install Torque: 17 Nm - Thread reach: 26.5mm - Hexagon: 14mm Bi-Hex - Supplied Gap: 0.5mm - Terminal Type: Cup - Seat Type: Flat - Made in the EU This Part Fits: Year Make Model Submodel 2021-2024 BMW 228i Gran Coupe Base 2020-2024 BMW 228i xDrive Gran Coupe Base 2017-2026 BMW 230i Base 2017-2021,2023-2026 BMW 230i xDrive Base 2021-2024 BMW 330e Base 2022-2024 BMW 330e xDrive Base 2017-2024 BMW 330i Base 2017-2019 BMW 330i GT xDrive Base 2017-2024 BMW 330i xDrive Base 2016-2018 BMW 340i Base 2017-2019 BMW 340i GT xDrive Base 2016-2018 BMW 340i xDrive Base 2017-2026 BMW 430i Base 2017-2020,2022-2026 BMW 430i Gran Coupe Base 2017-2026 BMW 430i xDrive Base 2017-2020,2023-2026 BMW 430i xDrive Gran Coupe Base 2017-2020 BMW 440i Base 2017-2020 BMW 440i Gran Coupe Base 2017-2020 BMW 440i xDrive Base 2017-2020 BMW 440i xDrive Gran Coupe Base 2022-2023 BMW 530e Base 2022-2023 BMW 530e xDrive Base 2017-2023 BMW 530i Base 2017-2023 BMW 530i xDrive Base 2017-2023 BMW 540i Base 2017-2023 BMW 540i xDrive Base 2018-2019 BMW 640i xDrive Gran Turismo Base 2016-2022 BMW 740i Base 2017-2022 BMW 740i xDrive Base 2020-2026 BMW 840i Base 2020-2026 BMW 840i Gran Coupe Base 2020-2026 BMW 840i xDrive Base 2020-2026 BMW 840i xDrive Gran Coupe Base 2023-2026 BMW M2 Base 2020-2024 BMW M235i xDrive Gran Coupe Base 2017-2021,2023-2026 BMW M240i Base 2017-2026 BMW M240i xDrive Base 2021-2026 BMW M3 Base 2021-2026 BMW M3 Competition 2022-2026 BMW M3 Competition xDrive 2020-2024 BMW M340i Base 2020-2024 BMW M340i xDrive Base 2021-2026 BMW M4 Base 2021-2026 BMW M4 Competition 2022-2026 BMW M4 Competition xDrive 2023 BMW M4 CSL 2021-2024 BMW M440i Base 2022-2024 BMW M440i Gran Coupe Base 2021-2024 BMW M440i xDrive Base 2022-2024 BMW M440i xDrive Gran Coupe Base 2017-2022 BMW X1 sDrive28i 2016-2022 BMW X1 xDrive28i 2019-2022 BMW X2 M35i 2018-2023 BMW X2 sDrive28i 2018-2023 BMW X2 xDrive28i 2020-2024 BMW X3 M 2020-2022 BMW X3 M Competition 2018-2024 BMW X3 M40i 2019-2024 BMW X3 sDrive30i 2018-2024 BMW X3 xDrive30i 2020-2025 BMW X4 M 2020-2022 BMW X4 M Competition 2019-2025 BMW X4 M40i 2019-2025 BMW X4 xDrive30i 2020-2023 BMW X5 sDrive40i 2019-2023 BMW X5 xDrive40i 2021-2023 BMW X5 xDrive45e 2020-2021 BMW X6 sDrive40i 2020-2023 BMW X6 xDrive40i 2019-2023 BMW X7 xDrive40i 2022-2026 BMW Z4 M40i 2020-2021 BMW Z4 sDrive M40i 2019-2024 BMW Z4 sDrive30i 2007-2024 Mini Cooper Base 2015-2024 Mini Cooper John Cooper Works 2021 Mini Cooper John Cooper Works GP 2014-2024 Mini Cooper S 2017-2019 Mini Cooper Clubman ALL4 2016-2019 Mini Cooper Clubman Base 2017-2024 Mini Cooper Clubman John Cooper Works ALL4 2016-2024 Mini Cooper Clubman S 2017-2024 Mini Cooper Clubman S ALL4 2017-2024 Mini Cooper Countryman ALL4 2011-2024 Mini Cooper Countryman Base 2018-2024 Mini Cooper Countryman John Cooper Works ALL4 2017-2024 Mini Cooper Countryman S 2017-2024 Mini Cooper Countryman S ALL4 2018-2024 Mini Cooper Countryman S E ALL4 2021-2022 Toyota GR Supra A91 Edition 2020-2026 Toyota GR Supra Base 2020-2026 Toyota GR Supra Premium ## Details - **Price:** 52.82 CAD - **Vendor:** Dinan - **Type:** Spark Plugs ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 52.82 CAD | In stock | ## Images - Photo - Primary - Photo - out of package - Photo - out of package - Photo - out of package - Photo - out of package --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/dinan-b48-b58-s58-iridium-spark-plug-heat-range-9-12mm-x-26-5mm-x-14mm-flat-single) > Updated: 2026-07-05