{"title":"Diesel Performance","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBuild more power, improve reliability, and get the most out of your diesel setup with the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eDiesel Performance \u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003erange from Prime Speedworks.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWhether you're upgrading a hard-working tow rig, building a high-output street vehicle, or putting together a serious competition diesel, the right components make all the difference. Our diesel performance collection brings together quality parts designed to support increased boost, fuel delivery, airflow, engine strength, monitoring, and overall performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFrom supporting modifications through to components for serious horsepower builds, we focus on products suited to real-world performance applications where \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003estrength, consistency, and reliability matter\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e","products":[{"product_id":"p1-dodge-cummins-diesel-24v-head-stud-kit-5-9l-6-7l-s220-series-black-oxide-finish","title":"P1 | Dodge Cummins Diesel 24V Head Stud Kit – 5.9L \u0026 6.7L – S220 Series – Black Oxide Finish","description":"\u003ch3\u003e\u003cstrong\u003e\u003cspan\u003eP1 Dodge Cummins Diesel 24V Head Stud Kit – 5.9L \u0026amp; 6.7L – S220 Series – Black Oxide Finish\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003ePart Number: K044-H02S\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eUpgrade cylinder-head retention in your Cummins with the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eP1 Dodge Cummins Diesel 24V Head Stud Kit\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, engineered for \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e1998-current 5.9L and 6.7L 24-valve Cummins engines\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eDesigned for performance diesel applications where elevated boost and cylinder pressure can place substantial load on the factory head-fastening system, the P1 S220 kit provides a high-strength solution for maintaining consistent cylinder-head clamping force.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eP1’s \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eS220 Series\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e fasteners are rated at approximately \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e220,000 PSI nominal tensile strength\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e and are manufactured from US-sourced steel. The studs are individually heat-treated, straightened and centreless ground, with threads rolled after heat treatment for increased strength and consistency.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe kit is supplied with \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e12-point nuts\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e and precision washers, providing secure tool engagement and even distribution of clamping load across the cylinder head.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFinished in durable \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eblack oxide\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, the \u003cstrong\u003eK044-H02S\u003c\/strong\u003e combines serious diesel-engine strength with the premium finish expected from P1 performance hardware.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan\u003eFeatures \u0026amp; Benefits\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eDesigned for Dodge\/Ram 24-valve Cummins diesel engines\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSuits 5.9L and 6.7L applications\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDesigned for 1998-current engine combinations\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eP1 S220 Series high-strength construction\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eApproximately 220,000 PSI nominal tensile strength\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDesigned for increased boost and cylinder pressure\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHelps maintain consistent cylinder-head clamping force\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePrecision centreless-ground studs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eThreads rolled after heat treatment\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSupplied with premium 12-point nuts\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHardened precision washers\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBlack oxide finish\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSuitable for high-performance street, towing and competition diesel builds\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eManufactured for repeatable fit and installation\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eProduct Type: Cylinder Head Stud Kit\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBrand: P1 Manufacturing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEngine Family: Cummins 24-Valve Diesel\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEngine Displacement: 5.9L \/ 6.7L\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eModel Years: 1998–Current\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFastener Series: S220\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNominal Tensile Strength: Approximately 220,000 PSI\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNut Style: 12 Point\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFinish: Black Oxide\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eApplication: High-Performance Diesel Cylinder Head Retention\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan\u003eWhat’s Included\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eComplete P1 S220 Series cylinder-head stud set\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMatching 12-point nuts\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePrecision hardened washers\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTorquepoint assembly lube and brush\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan\u003eApplications\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e1998-current Dodge\/Ram Cummins diesel engines\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e5.9L 24-valve Cummins\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e6.7L Cummins\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHigh-boost diesel builds\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePerformance street trucks\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHeavy towing applications\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDiesel drag racing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSled pulling\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCompetition diesel engines\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eModified turbocharger applications\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEngines running increased cylinder pressure\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan\u003eWhy Upgrade to Head Studs?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCylinder pressure increases dramatically as boost, fuelling and engine output rise. Maintaining the seal between the cylinder head, head gasket and engine block becomes increasingly important as power levels increase.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eA quality head-stud system provides more consistent clamping force than conventional production head bolts and reduces repeated loading on the block threads during engine assembly.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFor modified Cummins engines, upgraded head studs are one of the most important reliability improvements when increasing boost and cylinder pressure.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan\u003eWhy P1 S220?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eP1 S220 fasteners are engineered for demanding high-performance applications and carry a nominal tensile-strength rating of approximately \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e220,000 PSI\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eP1 manufactures its critical fasteners in-house in the USA, including vacuum heat treatment, centreless grinding and post-heat-treatment thread rolling. The 12-point nuts are also manufactured and heat-treated in-house, while the washers are hardened and double-disc ground for consistency.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe result is a fastener system designed to deliver repeatable preload and dependable cylinder-head retention in demanding diesel applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan\u003eImportant Installation Notes\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAlways confirm engine year, block, cylinder head and gasket configuration before installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCorrect stud lubrication, tightening sequence and final torque procedure are critical to achieving the intended fastener preload. Follow the current \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eP1 installation instructions for K044-H02S\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e or the recommendations of your engine builder.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCylinder-head and block threads should be clean and free from damage before assembly.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan\u003eWhy Buy From Prime Speedworks\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003ePrime Speedworks supplies \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eP1 performance fasteners\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e to diesel performance workshops, engine builders, race teams and enthusiasts throughout Australia.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFrom Cummins head and main stud kits through to Duramax, Power Stroke and performance petrol-engine fasteners, Prime Speedworks can help match the correct P1 hardware to your engine combination and intended power level.\u003c\/span\u003e\u003c\/p\u003e","brand":"P1","offers":[{"title":"Default Title","offer_id":43687239090243,"sku":"K044-H02S","price":1050.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/5836\/9859\/files\/9bcda810-af04-4f81-b56f-40313b691b65.jpg?v=1787099998"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/5836\/9859\/collections\/2025-ram-hd-pr-102-677c153a3599e.jpg?v=1787031998","url":"https:\/\/prime-speedworks.com\/collections\/diesel-performance.oembed","provider":"Prime Speedworks","version":"1.0","type":"link"}