{"product_id":"acdelco-iridium-spark-plugs-41-103-6-pack-professional-long-life-oem-fit-for-gas-engines","title":"ACDelco Iridium Spark Plugs 41-103 6-Pack — Professional Long-Life OEM-Fit for Gas Engines","description":"\u003cp\u003e\u003cstrong\u003eThe ACDelco 41-103 Professional Iridium Spark Plug (6 pack) is a high-durability ignition replacement built for consistent performance and extended service life in compatible gasoline engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese professional-grade iridium plugs are engineered for reliable spark conduction, improved wear resistance, and stable combustion over longer intervals than standard copper plugs. Packaged as six individual plugs, the ACDelco 41-103 suits routine maintenance or multi-cylinder tune-ups and fits many modern passenger cars and light trucks that specify an iridium electrode design.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this spark plug improve engine reliability?\u003c\/h3\u003e\n\u003cp\u003eIridium, a high-melting-point metal, forms a fine-tipped center electrode that requires less voltage to fire and resists electrode erosion. The precise spark gap and durable construction help maintain consistent ignition timing and combustion quality across thousands of miles.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFine iridium center electrode for lower required firing voltage\u003c\/li\u003e\n  \u003cli\u003eStable spark gap retains performance over longer intervals\u003c\/li\u003e\n  \u003cli\u003eReduced electrode wear compared with standard materials\u003c\/li\u003e\n  \u003cli\u003eManufactured to OEM-style specifications for fit and function\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat fits and installation details should I know before buying?\u003c\/h3\u003e\n\u003cp\u003eThe ACDelco 41-103 is sold in a six-pack to cover multi-cylinder engines or scheduled replacements. Confirm compatibility with your vehicle’s year, make, model, and engine code before ordering; correct plug reach, thread size, and heat range are essential for safe installation and optimal performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePackage contains six plugs — ideal for 4- or 6-cylinder tune-ups\u003c\/li\u003e\n  \u003cli\u003eVerify OEM cross-reference or vehicle application guide first\u003c\/li\u003e\n  \u003cli\u003eTorque to manufacturer specs and use anti-seize if recommended\u003c\/li\u003e\n  \u003cli\u003eInspect ignition coil boots and wiring during replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow long will a set typically last and when should I replace them?\u003c\/h3\u003e\n\u003cp\u003eIridium plugs usually outlast conventional copper plugs, often providing many tens of thousands of miles of service when used under normal driving conditions. Replacement intervals vary by vehicle and driving style, so follow the vehicle manufacturer’s service schedule and check plugs for fouling, wear, or physical damage at recommended intervals.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eExtended service life versus standard plugs under normal conditions\u003c\/li\u003e\n  \u003cli\u003eInspect at scheduled maintenance or if drivability issues appear\u003c\/li\u003e\n  \u003cli\u003eLook for signs: heavy deposits, rounded electrodes, misfiring\u003c\/li\u003e\n  \u003cli\u003eReplace as a set for even performance across cylinders\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat packaging and physical details are included with the 6-pack?\u003c\/h3\u003e\n\u003cp\u003eThe product ships as six individual spark plugs in a compact package optimized for storage and transport. Packaging dimensions and weight make it easy to keep on hand for roadside repairs or routine shop inventory.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eItem package dimensions: 5.19 L x 4.28 W x 0.93 H inches\u003c\/li\u003e\n  \u003cli\u003ePackage weight: 0.65 pounds — lightweight and compact\u003c\/li\u003e\n  \u003cli\u003eIncludes six spark plugs for multi-cylinder replacement\u003c\/li\u003e\n  \u003cli\u003ePackaged to protect electrodes and threads in transit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this product is for: The ACDelco 41-103 Professional Iridium Spark Plug (6 pack) is aimed at DIY mechanics, independent repair shops, and vehicle owners who want a durable, OEM-style iridium replacement for routine tune-ups. Choose this set if your vehicle’s service manual calls for an iridium plug or if you prefer a longer-life option to reduce the frequency of replacements while maintaining consistent ignition performance.\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: Are these ACDelco 41-103 plugs compatible with my car?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Check your vehicle’s service manual or an OEM parts cross-reference to confirm fit, thread size, and reach before purchase.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I replace only one plug or should I install all six?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: For best balance and performance, replace all plugs in the engine at the same time rather than a single unit.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ACDelco","offers":[{"title":"Default Title","offer_id":55169028915543,"sku":"B01JQ2L5DS","price":75.23,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/acdelco-41-103-front-packaging.jpg?v=1790417159","url":"https:\/\/britishgarage.co.uk\/products\/acdelco-iridium-spark-plugs-41-103-6-pack-professional-long-life-oem-fit-for-gas-engines","provider":"British Garage","version":"1.0","type":"link"}