{"product_id":"autolite-app145-spark-plug","title":"Autolite APP145 Spark Plug","description":"\u003ch2\u003eAutolite APP145 Double Platinum Spark Plug\u003c\/h2\u003e\u003cp\u003eAutolite APP145 is a double platinum spark plug built for older GM and Pontiac applications that call for a tapered-seat plug with a 0.040 in. pre-gap. It uses platinum on both electrodes for consistent firing and long service life, while the resistor design and ceramic insulator support stable ignition performance.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDouble platinum firing surfaces for durable spark delivery\u003c\/li\u003e\n\u003cli\u003e0.040 in. pre-gap, 14 mm thread diameter, and 0.433 in. reach\u003c\/li\u003e\n\u003cli\u003eTapered seat design with a 5\/8 in. hex for service access\u003c\/li\u003e\n\u003cli\u003eResistor plug with ceramic insulator and short projection design\u003c\/li\u003e\n\u003cli\u003eCompatible with a wide range of Chevrolet and GMC truck and van applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eThe Autolite APP145 spark plug is engineered as an OE-style replacement for a broad range of classic Chevrolet and GMC light- and heavy-duty vehicles, including Chevrolet C10, K20, and P30 applications, as well as GMC C15, K25, and Jimmy models. The platinum-to-platinum design helps maintain spark consistency over time, and the tapered ground electrode supports reliable ignition under regular driving conditions. Autolite APP145 is also referenced by cross numbers 7516 and 41-821 for the same application.\u003c\/p\u003e\u003cp\u003eAutolite positions this Double Platinum Spark Plug line as a direct-fit alternative for foreign and domestic vehicles where OE form, fit, and function are required. For Chevrolet C10 and GMC K25 owners restoring or maintaining older ignition systems, APP145 provides the specified plug geometry and electrical characteristics needed for proper operation.\u003c\/p\u003e\u003ch2\u003eWhat It Is Used For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHard starting caused by worn or inconsistent spark plugs\u003c\/li\u003e\n\u003cli\u003eMisfire concerns related to degraded electrode surfaces\u003c\/li\u003e\n\u003cli\u003eReduced throttle response from weak ignition output\u003c\/li\u003e\n\u003cli\u003eFuel economy loss tied to inefficient combustion\u003c\/li\u003e\n\u003cli\u003eService replacement on older Chevrolet and GMC ignition systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the required gap and seat style before installation, since fitment notes include multiple gap specifications across applications. Confirm the vehicle’s ignition system requirements and match the plug to the listed year, make, model, and notes. Use the correct torque procedure for tapered-seat spark plugs and inspect plug wires or boots during service.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eAutolite supplies ignition products to the aftermarket and original equipment manufacturers and is a long-standing spark plug supplier. APP145 is built to OE form, fit, and function standards for the listed applications.\u003c\/p\u003e","brand":"Autolite","offers":[{"title":"Default Title","offer_id":53721548587189,"sku":"BBRQ-APP145","price":11.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/AB_APP145_Fro.jpg?v=1794119243","url":"https:\/\/www.partcatalog.com\/products\/autolite-app145-spark-plug","provider":"PartCatalog","version":"1.0","type":"link"}