{"product_id":"dorman-615-621-engine-intake-manifold-center","title":"Dorman 615-621 Engine Intake Manifold - Center","description":"\u003ch2\u003eOverview of Dorman Engine Intake Manifold 615-621\u003c\/h2\u003e\u003cp\u003eThe Dorman 615-621 engine intake manifold is designed for reliable performance in Chevrolet and GMC heavy-duty trucks. Crafted from aluminum, this intake manifold offers durability and precise fitment for select Sierra and Silverado models.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eConstructed from lightweight aluminum material\u003c\/li\u003e\n\u003cli\u003eCompatible with Chevrolet and GMC Sierra 2500 HD, Sierra 3500, Sierra 3500 HD, Silverado 2500 HD, Silverado 3500, and Silverado 3500 HD\u003c\/li\u003e\n\u003cli\u003eDimensions: 9 inches length, 5 inches width, and 9 inches manifold height\u003c\/li\u003e\n\u003cli\u003eIncludes 2 mounting holes with 6.7 mm diameter for secure installation\u003c\/li\u003e\n\u003cli\u003eSingle port outlet with 60 mm dimension\u003c\/li\u003e\n\u003cli\u003eRegular grade type, street legal for on-road use\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Dorman 615-621 engine intake manifold is engineered to meet the specifications required by Chevrolet and GMC heavy-duty trucks, including the Sierra 2500 HD and Silverado 3500 HD series. Made from aluminum, this intake manifold balances strength and weight, contributing to efficient engine performance. Its dimensions—9 inches in length, 5 inches in width, and 9 inches in height—ensure proper fitment within the engine bay. The manifold features two mounting holes with a diameter of 6.7 mm, providing a secure and stable attachment. Designed with a single 60 mm port outlet, it supports optimal airflow to the engine cylinders. This intake manifold does not include a gasket or seal and is not equipped with mounts for air conditioning compressors or alternators. It is not EGR ready and does not have a heated choke port, aligning with the original equipment specifications for the compatible vehicles.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Problem Resolution\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacement for damaged or cracked intake manifolds in Chevrolet Sierra 2500 HD and Silverado 3500 HD trucks\u003c\/li\u003e\n\u003cli\u003eRestores proper air intake flow to improve engine efficiency and performance\u003c\/li\u003e\n\u003cli\u003eAddresses vacuum leaks caused by manifold wear or failure\u003c\/li\u003e\n\u003cli\u003eHelps resolve engine misfires related to intake manifold issues\u003c\/li\u003e\n\u003cli\u003eSupports maintenance of street-legal emissions standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eInstallation of the Dorman 615-621 intake manifold requires careful alignment of the two mounting holes and proper torque specifications to ensure a secure fit. Since this part does not include a gasket or seal, it is recommended to source the appropriate gasket separately to prevent air leaks. Verify compatibility with your specific Chevrolet or GMC model before installation. Professional installation is advised to maintain engine performance and avoid damage.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman manufactures this intake manifold to meet regular grade standards, ensuring consistent quality and durability. The part is street legal and designed to comply with OEM specifications for Chevrolet and GMC heavy-duty trucks. Warranty details should be confirmed with the distributor or manufacturer, as they may vary by region and purchase source.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":52125048012981,"sku":"BKKY-615-621","price":178.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_615621_Fro.jpg?v=1775163093","url":"https:\/\/www.partcatalog.com\/products\/dorman-615-621-engine-intake-manifold-center","provider":"PartCatalog","version":"1.0","type":"link"}