{"product_id":"bosch-ignition-coil-for-bmw-rolls-royce-single-pencil-coil-over-molded-boot-silicone-insulation","title":"Bosch Ignition Coil for BMW \u0026 Rolls‑Royce — Single Pencil Coil, Over‑molded Boot \u0026 Silicone Insulation","description":"\u003cp\u003e\u003cstrong\u003eBosch 00124\/0221504464 is a single pencil-style ignition coil engineered to restore reliable spark delivery for select BMW 3\/5\/6\/7 Series, X3, X5, Z4 and Rolls-Royce Phantom engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen an ignition coil weakens or fails, engines can misfire, idle poorly, or lose responsiveness. This Bosch replacement coil reproduces factory electrical performance with modern insulation and a pressure-fit boot that seals against contamination. Built from Bosch’s decades-long expertise in ignition systems, the coil is designed to match original equipment fit and function, helping the vehicle’s ignition circuit deliver a strong, consistent spark.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this coil differ from cheaper aftermarket options?\u003c\/h3\u003e\n\u003cp\u003eRather than a two-piece boot or basic construction, this Bosch coil uses an over-molded high-voltage boot and silicone insulation to resist corrosion and electrical leakage. The design reduces the chance of separation during removal and preserves voltage transfer under high heat and vibration.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOver-molded high-voltage boot for cleaner removal and reliable contact\u003c\/li\u003e\n  \u003cli\u003eSilicone insulation to resist degradation and moisture intrusion\u003c\/li\u003e\n  \u003cli\u003eManufactured to meet or exceed OE electrical specifications\u003c\/li\u003e\n  \u003cli\u003ePressure-fit boot for a secure seal against contaminants\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill it fit my BMW or Rolls-Royce model?\u003c\/h3\u003e\n\u003cp\u003eThis coil is compatible with specific BMW 3, 5, 6 and 7 Series models, selected X3, X5 and Z4 applications, and Rolls-Royce Phantom variants that use the listed OE cross-numbers. Confirm fitment by checking your vehicle’s part numbers or consulting the seller’s compatibility guide before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplaces OE numbers: 00124, 12131712219, 12137594938\u003c\/li\u003e\n  \u003cli\u003ePencil-coil form factor used on many BMW and Rolls-Royce engines\u003c\/li\u003e\n  \u003cli\u003eDesigned as a one-to-one replacement for compatible factory coils\u003c\/li\u003e\n  \u003cli\u003eVerify chassis and engine code against product listing for correct fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the installation and performance notes?\u003c\/h3\u003e\n\u003cp\u003eInstallation follows standard ignition coil replacement procedures, but the upgraded 'pressure-fit' boot requires a firm push to fully seat on the spark plug. Once installed, the coil helps maintain consistent ignition energy which supports smoother starts and stable engine operation when fitment is correct.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePush firmly until the pressure-fit boot seats on the spark plug\u003c\/li\u003e\n  \u003cli\u003eNo special tools required beyond basic hand tools and safety precautions\u003c\/li\u003e\n  \u003cli\u003eReplace coils in affected banks if multiple coils show wear to avoid imbalance\u003c\/li\u003e\n  \u003cli\u003eInspect spark plugs and wiring while replacing coils for best results\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does Bosch quality affect long-term reliability?\u003c\/h3\u003e\n\u003cp\u003eBosch applies long-standing engineering standards to materials and winding processes, aiming to limit electrical leakage and resist environmental wear. The silicone over-mold and robust boot design reduce common failure modes, helping the coil deliver consistent performance through typical service intervals.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEngineered to meet or exceed original equipment durability targets\u003c\/li\u003e\n  \u003cli\u003eMaterials chosen to withstand heat, vibration and moisture exposure\u003c\/li\u003e\n  \u003cli\u003eIntegrated high-voltage boot reduces points of failure seen in cheaper designs\u003c\/li\u003e\n  \u003cli\u003eIndustry-recognized brand history in ignition and engine management systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This Bosch pencil ignition coil is aimed at owners and mechanics working on compatible BMW and Rolls-Royce models who want a direct-fit replacement that mirrors factory performance. It suits DIYers replacing a failed coil, workshop technicians completing diagnostic repairs, and anyone seeking a higher-quality aftermarket coil with improved sealing and insulation compared with economy alternatives. Always verify vehicle compatibility and consider inspecting associated ignition components during replacement to maximize service life.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this Bosch coil replace my original BMW part?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: This coil replaces OE numbers 00124, 12131712219, and 12137594938; verify your vehicle’s part number for compatibility.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is special tooling required to install the pressure-fit boot?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No special tools are needed; the boot requires a firm push to seat fully on the spark plug.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Bosch","offers":[{"title":"Default Title","offer_id":48082999312542,"sku":"B001COAL20","price":51.45,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/bosch-ignition-coil-front-view_f5d1ac7a-ac3b-4b93-a309-055d887c24d2.jpg?v=1785822236","url":"https:\/\/northtrailauto.ca\/products\/bosch-ignition-coil-for-bmw-rolls-royce-single-pencil-coil-over-molded-boot-silicone-insulation","provider":"North Trail Auto","version":"1.0","type":"link"}