{"product_id":"gm-genuine-parts-distributor-cap-d328a-10452458-oem-fit-replacement-anti-arc-durable-polymer","title":"GM GENUINE PARTS Distributor Cap D328A (10452458) OEM-fit replacement, anti-arc, durable polymer","description":"\u003cp\u003e\u003cstrong\u003eThe GM Genuine Parts D328A (10452458) distributor cap is an OEM-quality replacement cap that restores proper ignition routing and electrical insulation for compatible GM vehicles.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe D328A distributor cap from GM Genuine Parts is built to match factory specifications for fit, electrical conductivity, and durability. Designed as a GM-recommended replacement for the original component, this cap covers the distributor assembly and forms the upper portion of the rotary switch that distributes high-voltage current from the ignition coil to spark plug wires. It’s engineered to deliver consistent contact, resist arcing, and simplify installation so the ignition system can operate as intended.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this distributor cap improve ignition consistency?\u003c\/h3\u003e\n\u003cp\u003eThe D328A restores the intended electrical pathways between the ignition coil and each spark plug wire, reducing misfires that can occur from worn or degraded caps. It uses metal inserts and precise tower alignment to maintain reliable conductivity under normal engine conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFactory-matched metal inserts for steady electrical contact\u003c\/li\u003e\n  \u003cli\u003eFull anti-arc barrier reduces secondary arcing and misfires\u003c\/li\u003e\n  \u003cli\u003eExact tower spacing to match original rotor and wire routing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this part be easy to install on my GM vehicle?\u003c\/h3\u003e\n\u003cp\u003eYes — the D328A is manufactured to GM OE dimensions to make replacement straightforward and fast. Locator keys and clear alignment features help ensure the cap seats correctly on the distributor housing, preventing improper installation that could affect timing or contact pressure.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEasy-to-read locator keys for correct positioning\u003c\/li\u003e\n  \u003cli\u003eOE-fit mounting points align with factory hardware\u003c\/li\u003e\n  \u003cli\u003eCompatible with original rotor and wire harness layouts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat durability features help this cap last like the original?\u003c\/h3\u003e\n\u003cp\u003eGM Genuine Parts constructs the cap from materials selected to withstand heat, vibration, and electrical stress typical of engine compartments. The result is a service life and reliability comparable to the original factory component, maintaining stable performance over time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDurable polymer housing resists heat and engine vibration\u003c\/li\u003e\n  \u003cli\u003eCorrosion-resistant metal inserts maintain conductivity\u003c\/li\u003e\n  \u003cli\u003eEngineered anti-arc barrier limits internal electrical breakdown\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I know this is the right replacement for my vehicle?\u003c\/h3\u003e\n\u003cp\u003eThe D328A (10452458) is a GM-recommended replacement part specified to match the original distributor cap for certain GM models. Confirm fitment by cross-referencing the part number with your vehicle’s year, make, model, and engine option or consult a dealer parts lookup.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePart number: D328A (10452458) for direct OE-replacement compatibility\u003c\/li\u003e\n  \u003cli\u003eRecommended by GM as an equivalent to the factory-installed cap\u003c\/li\u003e\n  \u003cli\u003eCheck vehicle fitment using VIN or dealer parts lookup\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The GM Genuine Parts D328A distributor cap is intended for technicians, DIY mechanics, and vehicle owners who need a direct-fit, factory-grade replacement for a worn or failing distributor cap on compatible GM vehicles. Choose this cap if you want an OE-matching component that simplifies installation, maintains correct ignition routing, and reduces the chance of secondary arcing without modifying the original ignition system.\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: Is the D328A (10452458) an original equipment part?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The D328A (10452458) is a GM-recommended, OEM-quality replacement matching factory specifications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How do I confirm this cap fits my vehicle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Verify fitment by checking the part number against your vehicle’s VIN or using a GM dealer parts lookup.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GM GENUINE PARTS","offers":[{"title":"Default Title","offer_id":48086776217758,"sku":"B000BYB1Z8","price":60.17,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/gm-genuine-parts-d328a-front-view.jpg?v=1785904640","url":"https:\/\/northtrailauto.ca\/products\/gm-genuine-parts-distributor-cap-d328a-10452458-oem-fit-replacement-anti-arc-durable-polymer","provider":"North Trail Auto","version":"1.0","type":"link"}