{"product_id":"fleece-freedom-series-cylinder-heads-fpe-61-10004-p-fpe-61-10004-d-2011-2016-duramax-lml","title":"Fleece Freedom Series Cylinder Heads FPE-61-10004-P \u0026 FPE-61-10004-D | 2011-2016 Duramax LML","description":"\u003cp\u003eThe Fleece Performance Freedom Series Cylinder Heads are high-quality remanufactured replacements for 2011–2016 GM 6.6L Duramax LML engines. Designed to restore reliability and performance, these cylinder heads are professionally rebuilt at the Freedom Racing Engine facility using strict inspection and machining standards to ensure consistent quality and durability.\u003c\/p\u003e\n\n\u003cp\u003eEach cylinder head undergoes a detailed remanufacturing process that includes thorough cleaning, precision decking, pressure testing, and leak testing to verify structural integrity. Critical valvetrain components are replaced with new valve springs, valve seals, valve guides, and injector cups to help maintain proper sealing and dependable engine operation. The finished assembly is engineered to meet or exceed original equipment specifications, making it an ideal solution for both stock replacements and performance-oriented diesel builds.\u003c\/p\u003e\n\n\u003cp\u003eThese Freedom Series cylinder heads are available for both the driver and passenger side of the engine and are sold individually, allowing installers to replace only the necessary components or upgrade both sides during a rebuild.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVehicle Fitment:\u003c\/strong\u003e 2011–2016 GM 6.6L Duramax LML\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable Positions:\u003c\/strong\u003e Driver side or passenger side cylinder head\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemanufactured Assembly:\u003c\/strong\u003e Professionally rebuilt and inspected\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMachining Process:\u003c\/strong\u003e Cleaned, decked, pressure tested, and leak tested\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNew Components:\u003c\/strong\u003e Includes valve springs, valve seals, valve guides, and injector cups\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Standard:\u003c\/strong\u003e Meets or exceeds OEM specifications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Core Charge:\u003c\/strong\u003e No core return required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold Individually:\u003c\/strong\u003e Select the appropriate side when ordering\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Fleece Performance Engineering","offers":[{"title":"Driver Side","offer_id":51873997422875,"sku":"FPE-61-10004-D","price":1199.0,"currency_code":"USD","in_stock":true},{"title":"Passenger Side","offer_id":51873997455643,"sku":"FPE-61-10004-P","price":1199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/5757\/3147\/files\/Screenshot2026-03-10at8.21.25AM.png?v=1773153207","url":"https:\/\/wwmperformance.com\/products\/fleece-freedom-series-cylinder-heads-fpe-61-10004-p-fpe-61-10004-d-2011-2016-duramax-lml","provider":"WWM Performance","version":"1.0","type":"link"}