{"product_id":"dinan-2025-bmw-gen2-b48-gen3-b58-iridium-spark-plug-heat-range-9-12mm-x-26-5mm-x-14mm-single","title":"Dinan D640-0003 Iridium Spark Plug - Heat Range 12 - Single","description":"\u003cp\u003eDinan D640-0003 is a single iridium performance spark plug for compatible B48 TU and B58 TU1 engine applications. It uses a 12 mm thread, 26.5 mm reach, 14 mm bi-hex, flat seat, and 0.5 mm supplied gap. Select it by exact engine, OE cross-reference, dimensions, heat range, and tuning requirements rather than an assumed vehicle list.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIridium center electrode\u003c\/li\u003e\n\u003cli\u003eHeat range 12 comparable to NGK 8\u003c\/li\u003e\n\u003cli\u003e12 mm thread diameter\u003c\/li\u003e\n\u003cli\u003e26.5 mm reach\u003c\/li\u003e\n\u003cli\u003e14 mm bi-hex\u003c\/li\u003e\n\u003cli\u003e0.5 mm supplied gap\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis plug is engine-specific, and Dinan identifies B48 TU and B58 TU1 applications rather than a complete verified year, make, and model table. No Convermax vehicle tags are added until authoritative YMM coverage is available. Confirm OE cross-reference 12125A523E0 and all plug dimensions before installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eDinan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003eD640-0003\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Diameter\u003c\/th\u003e\n\u003ctd\u003e12 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReach\u003c\/th\u003e\n\u003ctd\u003e26.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHex\u003c\/th\u003e\n\u003ctd\u003e14 mm bi-hex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSeat\u003c\/th\u003e\n\u003ctd\u003eFlat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSupplied Gap\u003c\/th\u003e\n\u003ctd\u003e0.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity\u003c\/th\u003e\n\u003ctd\u003eOne spark plug\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUPC or GTIN\u003c\/th\u003e\n\u003ctd\u003e810215392988\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOne Dinan D640-0003 iridium spark plug. Order the correct quantity for the engine. Ignition coils, tools, and other service parts are not included.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAbout Dinan\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDinan manufactures automotive performance and replacement components. Match the exact manufacturer part number and published application details before installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRelated Dinan Products\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/dinan-00-27-bmw-02-24-mini-20-26-toyota-gr-supra-a90-a91-throttle-booster\"\u003eDinan 00-27 BMW\/02-24 Mini\/20-26 Toyota GR Supra (A90\/A91) Throttle Booster\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/dinan-01-06-bmw-m3-e46-aluminum-strut-tower-brace-front\"\u003eDinan 01-06 BMW M3 (E46) Aluminum Strut Tower Brace - Front\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/dinan-04-10-bmw-530i-535i-545i-550i-650i-m5-m6-e60-e63-e64-carbon-fiber-strut-tower-brace-front\"\u003eDinan 04-10 BMW 530i\/535i\/545i\/550i\/650i\/M5\/M6 (E60\/E63\/E64) Carbon Fiber Strut Tower Brace - Front\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/dinan\"\u003eShop all Dinan products\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs D640-0003 sold as a complete engine set?\u003c\/strong\u003e\u003cbr\u003eNo. This listing is for one spark plug.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich engines does Dinan identify?\u003c\/strong\u003e\u003cbr\u003eDinan identifies B48 TU and B58 TU1 applications, also described as Gen 2 B48 and Gen 3 B58.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy are there no vehicle tags?\u003c\/strong\u003e\u003cbr\u003eThe authoritative source provides engine coverage but not a complete YMM table, so the listing is marked for fitment verification rather than using invented vehicle tags.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation Instructions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eInstallation should be completed by a qualified technician using the current manufacturer instructions. Verify the vehicle or system application, inspect every supplied component, follow the specified fastener and torque procedures, check clearances and routing, and confirm safe operation before driving.\u003c\/p\u003e","brand":"Dinan","offers":[{"title":"Default Title","offer_id":46742189801551,"sku":"DNND640-0003","price":21.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/857b445af742213bc722f3b64ad3cca2L.jpg?v=1789041833","url":"https:\/\/www.blackopsautoworks.com\/products\/dinan-2025-bmw-gen2-b48-gen3-b58-iridium-spark-plug-heat-range-9-12mm-x-26-5mm-x-14mm-single","provider":"Black Ops Auto Works","version":"1.0","type":"link"}