{"product_id":"powerstroke-products-loaded-67l-cylinder-head-hd-springs-left","title":"Powerstroke Products Loaded 6.7L Cylinder Head With HD Springs (Left)","description":"\u003cp\u003e\nRestore reliability and improve valvetrain control on your 2011–2016 Ford 6.7L Powerstroke with the Powerstroke Products Loaded Cylinder Head with Heavy-Duty Valve Springs (Left), part number PP-6.7FHhdvsLeft. This fully assembled replacement is designed to address damaged cylinder heads while providing a critical upgrade for performance-driven applications.\n\u003c\/p\u003e\n\u003cp\u003e\nThis cylinder head comes equipped with Powerstroke Products heavy-duty valve springs, helping prevent valve float commonly introduced by aftermarket turbochargers and other engine modifications. Factory valve springs often lack sufficient seat pressure for increased boost and aggressive tuning, which can lead to serious engine damage. Proper spring pressure is essential for maintaining valvetrain stability and unlocking maximum performance.\n\u003c\/p\u003e\n\u003cp\u003e\nDelivered ready to install with valves, seals, and heavy-duty valve springs already in place, this cylinder head is intended for the left (driver) side of the engine. A one-year unlimited mileage warranty provides added confidence for both street and performance builds.\n\u003c\/p\u003e\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLoaded Cylinder Head Assembly\u003c\/li\u003e\n\u003cli\u003eDesigned for Left (Driver) Side Installation\u003c\/li\u003e\n\u003cli\u003eIncludes Valves, Seals, and Heavy-Duty Valve Springs\u003c\/li\u003e\n\u003cli\u003eImproves Valvetrain Control for Modified Engines\u003c\/li\u003e\n\u003cli\u003e1-Year Unlimited Mileage Warranty\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Powerstroke Products","offers":[{"title":"Default Title","offer_id":51525598380315,"sku":"PP-6.7FHhdvsleft","price":1302.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/5757\/3147\/files\/Screenshot2025-12-23at3.10.03PM.png?v=1766527838","url":"https:\/\/wwmperformance.com\/products\/powerstroke-products-loaded-67l-cylinder-head-hd-springs-left","provider":"WWM Performance","version":"1.0","type":"link"}