{"title":"Cylinder Heads","description":"","products":[{"product_id":"dogbone-exhaust-manifold-bolt-spacer-kit-1998-5-2018-5-9l-6-7l-cummins","title":"DogBone Exhaust Manifold Bolt \u0026 Spacer Kit for 1998.5-2018 5.9L\/6.7L Cummins","description":"\u003ch3\u003eDogBone Exhaust Manifold Bolt \u0026amp; Spacer Kit – Dodge 5.9L Cummins (2003–2007)\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eDogBone Exhaust Manifold Bolt \u0026amp; Spacer Kit\u003c\/strong\u003e is built to replace broken or stripped factory hardware with high-strength \u003cstrong\u003eGrade 10.9 bolts\u003c\/strong\u003e and corrosion-resistant spacers. Designed for durability and performance, this complete kit provides everything needed for a secure and reliable exhaust manifold installation.\u003c\/p\u003e\n\u003ch4\u003eFeatures:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade 10.9 high-strength hardware\u003c\/strong\u003e for superior clamping force\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eReplaces broken or stripped exhaust manifold bolts\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable black oxide coating\u003c\/strong\u003e for long-lasting corrosion resistance\u003c\/li\u003e\n\u003cli\u003eIncludes all hardware required for a full installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eKit Includes:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e(12) Flange head exhaust bolts\u003c\/li\u003e\n\u003cli\u003e(12) Black oxide exhaust spacers\u003c\/li\u003e\n\u003cli\u003e(2) Stainless steel socket bolts\u003c\/li\u003e\n\u003cli\u003e(2) Stainless steel M10 washers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFitment Guide:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e2003–2007 Dodge 5.9L Cummins Diesel\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003eFactory heat shield must be removed prior to installation.\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DogBone","offers":[{"title":"Default Title","offer_id":51313876730139,"sku":"DogBone-EXH-MBSK-5.9\/6.7L-CUMMINS","price":59.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/5757\/3147\/files\/F198847619.png?v=1762902108"},{"product_id":"dogbone-exhaust-manifold-stud-kit-1994-2018-5-9l-6-7l-cummins","title":"DogBone Exhaust Manifold Stud Kit for 1994-2018 5.9L\/6.7L Cummins","description":"\u003ch3\u003eDogBone Exhaust Manifold Stud Kit – Dodge Ram Cummins 5.9L \/ 6.7L (1994–2018)\u003c\/h3\u003e\n\n\u003cp\u003eUpgrade your factory exhaust manifold bolts with the \u003cstrong\u003eDogBone Exhaust Manifold Stud Kit\u003c\/strong\u003e, designed for superior strength, corrosion resistance, and a perfect leak-free seal. This complete kit includes all the hardware you need to replace your worn or broken OEM bolts with precision-fit studs and high-quality fasteners.\u003c\/p\u003e\n\n\u003cp\u003eEach stud features an \u003cstrong\u003eAllen head tip\u003c\/strong\u003e for easy thread-in installation and removal, while the \u003cstrong\u003edurable black oxide coating\u003c\/strong\u003e provides long-lasting protection against rust and corrosion. The 12-point nuts and hardened washers ensure a strong and secure seal between the manifold and cylinder head.\u003c\/p\u003e\n\n\u003ch4\u003eFeatures:\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eComplete hardware kit for secure, leak-free installation\u003c\/li\u003e\n  \u003cli\u003e(12) high-strength manifold studs with Allen head for easy installation\u003c\/li\u003e\n  \u003cli\u003e(12) 12-point nuts and (12) washers for a professional finish\u003c\/li\u003e\n  \u003cli\u003eBlack oxide coating for enhanced corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eIdeal for performance builds, manifold upgrades, and factory replacements\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eKit Includes:\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e(12) Manifold studs\u003c\/li\u003e\n  \u003cli\u003e(12) Washers\u003c\/li\u003e\n  \u003cli\u003e(12) 12-point nuts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eFitment Guide:\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1994–1998 Dodge Ram 5.9L Cummins Diesel \u003cem\u003e(fits aftermarket exhaust manifolds only)\u003c\/em\u003e\n\u003c\/li\u003e\n  \u003cli\u003e1998.5–2002 Dodge Ram 5.9L Cummins Diesel\u003c\/li\u003e\n  \u003cli\u003e2003–2007 Dodge Ram 5.9L Cummins Diesel \u003cem\u003e(requires removal of factory heat shield)\u003c\/em\u003e\n\u003c\/li\u003e\n  \u003cli\u003e2007.5–2018 Dodge Ram 6.7L Cummins Diesel\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DogBone","offers":[{"title":"Default Title","offer_id":51313876828443,"sku":"DogBone-EXH-MSK-5.9\/6.7L-CUMMINS","price":89.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/5757\/3147\/files\/F198847617.png?v=1762902413"},{"product_id":"powerstroke-products-loaded-stock-67l-cylinder-head-left","title":"Powerstroke Products Loaded Stock 6.7L Cylinder Head (Left)","description":"\u003cp\u003eEnsure the reliability of your Ford 6.7L Powerstroke engine by replacing damaged or compromised cylinder heads with the Powerstroke Products Loaded Stock Cylinder Head (Left), part number PP-6.7FHOEMLeft. This component is designed as a stock-style replacement to restore proper engine function without relying on questionable or reused parts.\u003c\/p\u003e\n\u003cp\u003eThis fully assembled cylinder head arrives ready for installation and includes new valves, valve springs, and seals. Designed specifically for the left (driver) side of the engine, it provides a straightforward solution for engine repair or rebuild applications.\u003c\/p\u003e\n\u003cp\u003eBacked by a one-year, unlimited mileage warranty, this loaded cylinder head offers confidence and peace of mind once installed.\u003c\/p\u003e\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLoaded Cylinder Head Assembly\u003c\/li\u003e\n\u003cli\u003eIncludes Valves, Springs, and Seals\u003c\/li\u003e\n\u003cli\u003eDesigned for Left (Driver) Side Installation\u003c\/li\u003e\n\u003cli\u003eDirect Stock Replacement for 6.7L Powerstroke\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":51525597921563,"sku":"PP-6.7FHOEMLeft","price":1027.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/5757\/3147\/files\/Screenshot2025-12-23at2.52.18PM.png?v=1766526779"},{"product_id":"powerstroke-products-loaded-o-ring-67l-head-hd-springs-left","title":"Powerstroke Products Loaded O-Ring 6.7L Head With HD Springs (Left)","description":"\u003cp\u003eThe Powerstroke Products Loaded O-Ring Cylinder Head with Heavy-Duty Valve Springs (Left), part number PP-6.7FHhdvsLeft-O, is engineered for performance-focused 2011–2016 Ford 6.7L Powerstroke builds. This upgraded cylinder head is ideal for drivers planning future power increases while maintaining long-term reliability.\u003c\/p\u003e\n\u003cp\u003eFeaturing a precision-machined O-Ring design and upgraded heavy-duty valve springs, this head is built to support higher cylinder pressures and advanced engine modifications. It allows compatibility with performance upgrades such as larger injectors, aftermarket turbochargers, and more aggressive tuning strategies.\u003c\/p\u003e\n\u003cp\u003eThis unit arrives fully assembled with valves, seals, and heavy-duty valve springs installed, making it ready for installation on the left (driver) side of the engine. A one-year unlimited mileage warranty provides added confidence once installed. Please note that o-ring cylinder heads are not compatible with Fel-Pro head gaskets.\u003c\/p\u003e\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eO-Ringed Cylinder Head Design\u003c\/li\u003e\n\u003cli\u003eLoaded Assembly with Valves, Seals, and Heavy-Duty Valve Springs\u003c\/li\u003e\n\u003cli\u003eDesigned for Left (Driver) Side Installation\u003c\/li\u003e\n\u003cli\u003eSupports High-Performance Engine Modifications\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":51525597954331,"sku":"PP-6.7FHhdvsLeft-O","price":1499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/5757\/3147\/files\/Screenshot2025-12-23at2.57.56PM.png?v=1766527111"},{"product_id":"powerstroke-products-loaded-stock-67l-cylinder-head-right","title":"Powerstroke Products Loaded Stock 6.7L Cylinder Head (Right)","description":"\u003cp\u003e\nRestore proper engine performance on your Ford 6.7L Powerstroke by replacing worn or damaged cylinder heads with the Powerstroke Products Loaded Stock Cylinder Head (Right), part number PP-6.7FHOEMRight. This component is designed as a direct stock-style replacement for reliable engine repair or rebuild applications.\n\u003c\/p\u003e\n\u003cp\u003e\nEach cylinder head begins as a brand-new casting and comes fully assembled for convenience. Valves, valve springs, and seals are pre-installed, allowing for a straightforward installation without additional assembly. This unit is engineered specifically for the right (passenger) side of the engine.\n\u003c\/p\u003e\n\u003cp\u003e\nBacked by a one-year unlimited mileage warranty, this loaded cylinder head delivers confidence, durability, and factory-style performance once installed.\n\u003c\/p\u003e\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLoaded Cylinder Head Assembly\u003c\/li\u003e\n\u003cli\u003eIncludes Valves, Springs, and Seals\u003c\/li\u003e\n\u003cli\u003eDesigned for Right (Passenger) Side Installation\u003c\/li\u003e\n\u003cli\u003eDirect Stock Replacement\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":51525598052635,"sku":"PP-6.7FHOEMRight","price":1027.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/5757\/3147\/files\/Screenshot2025-12-23at3.00.44PM.png?v=1766527277"},{"product_id":"powerstroke-products-loaded-o-ring-67l-head-hd-springs-right","title":"Powerstroke Products Loaded O-Ring 6.7L Head With HD Springs (Right)","description":"\u003cp\u003e\nThe Powerstroke Products Loaded O-Ring Cylinder Head with Heavy-Duty Valve Springs (Right), part number PP-6.7FHhdvsRight-O, is designed for high-performance 2011–2016 Ford 6.7L Powerstroke builds. This upgraded cylinder head offers a “build it once” solution for drivers planning future engine modifications.\n\u003c\/p\u003e\n\u003cp\u003e\nA precision o-ringed sealing surface combined with upgraded heavy-duty valve springs allows this head to support increased cylinder pressure and aggressive performance upgrades. It is well-suited for applications running larger injectors, aftermarket turbochargers, and advanced tuning while maintaining reliability.\n\u003c\/p\u003e\n\u003cp\u003e\nThis cylinder head arrives fully assembled with valves, seals, and heavy-duty valve springs installed, making it ready for installation on the right (passenger) side of the engine. It is backed by a one-year unlimited mileage warranty. Please note that o-ring cylinder heads are not compatible with Fel-Pro head gaskets.\n\u003c\/p\u003e\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eO-Ringed Cylinder Head Design\u003c\/li\u003e\n\u003cli\u003eLoaded Assembly with Valves, Seals, and Heavy-Duty Valve Springs\u003c\/li\u003e\n\u003cli\u003eDesigned for Right (Passenger) Side Installation\u003c\/li\u003e\n\u003cli\u003eBuilt to Support High-Performance Engine Upgrades\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":51525598085403,"sku":"PP-6.7FHhdvsRight-O","price":1499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/5757\/3147\/files\/Screenshot2025-12-23at3.01.44PM.png?v=1766527334"},{"product_id":"powerstroke-products-loaded-67l-cylinder-head-hd-springs-right","title":"Powerstroke Products Loaded 6.7L Cylinder Head With HD Springs (Right)","description":"\u003cp\u003eUpgrade the valvetrain in your 2011–2016 Ford 6.7L Powerstroke by replacing worn factory cylinder heads with the Powerstroke Products Loaded Cylinder Head with Heavy-Duty Valve Springs (Right), part number PP-6.7FHhdvsRight. Rather than re-machining old components, this assembled replacement provides a stronger, more reliable foundation for performance-oriented engine builds.\u003c\/p\u003e\n\u003cp\u003eThis cylinder head is equipped with heavy-duty valve springs designed to deliver proper valvetrain control in high-performance applications. Factory valve springs often lack the seat pressure required for aftermarket turbochargers and aggressive tuning, which can lead to valve float and potential engine damage. Upgraded spring pressure helps maintain precise valve operation, supporting improved reliability and consistent engine performance.\u003c\/p\u003e\n\u003cp\u003eArriving fully assembled with valves, seals, and heavy-duty valve springs installed, this cylinder head is ready for installation on the right (passenger) side of the engine. It is backed by a one-year unlimited mileage warranty for added peace of mind.\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 Right (Passenger) Side Installation\u003c\/li\u003e\n\u003cli\u003eIncludes Valves, Seals, and Heavy-Duty Valve Springs\u003c\/li\u003e\n\u003cli\u003eImproves Valvetrain Control for Performance Applications\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":51525598347547,"sku":"PP-6.7FHhdvsRight","price":1302.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/5757\/3147\/files\/Screenshot2025-12-23at3.08.06PM.png?v=1766527692"},{"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"},{"product_id":"powerstroke-products-rocker-arm-assembly-set-pp-ra-6-7","title":"POWERSTROKE PRODUCTS ROCKER ARM ASSEMBLY SET PP-RA-6.7","description":"\u003cp\u003eReplace worn or bent rocker arms in your \u003cstrong\u003eFord F-250\/350\/450\/550 6.7L Powerstroke\u003c\/strong\u003e with the \u003cstrong\u003ePowerstroke Products PP-RA-6.7 Rocker Arm Assembly Set\u003c\/strong\u003e. This complete set restores your valve train, ensuring proper valve motion, smooth engine operation, and reduced wear. Designed as a direct-fit replacement, these factory-style rocker arms are engineered for precise fitment, durability, and reliable performance.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eComplete set of intake and exhaust OEM-style rocker arms\u003c\/li\u003e\n  \u003cli\u003eHigh-strength construction for heavy-duty diesel use\u003c\/li\u003e\n  \u003cli\u003eIdeal for top-end rebuilds, performance upgrades, or replacing worn components\u003c\/li\u003e\n  \u003cli\u003eDirect-fit solution engineered by Powerstroke Products\u003c\/li\u003e\n  \u003cli\u003eShips directly from the manufacturer; email with expected shipping date provided\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Powerstroke Products","offers":[{"title":"Default Title","offer_id":51711712919835,"sku":"PP-RA-6.7","price":749.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/5757\/3147\/files\/Screenshot2026-01-30at9.13.13AM.png?v=1769789627"},{"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. 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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\/collections\/cylinder-heads.oembed","provider":"WWM Performance","version":"1.0","type":"link"}