{"title":"GMC, (2006-2007), LBZ, Engine, Heads \u0026 Studs","description":"","products":[{"product_id":"230-4201","title":"ARP 230-4201 Diesel Head Stud Kit (2001-2016 Duramax)","description":"\u003ch2\u003eGeneral Description\u003c\/h2\u003e\n\u003cdiv style=\"margin-left: 40px;\"\u003e\n\u003cp class=\"p1\" style=\"font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; line-height: normal; font-family: Helvetica; margin: 0px; color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: tahoma, geneva, sans-serif;\"\u003eUpgrade your 2001-2016 GM 6.6L Duramax LB7\/LLY\/LBZ\/LMM\/LML with an ARP Diesel Head Stud Kit 230-4201 from SDS. It's a proven fact that OEM head bolts are the weak link in a diesel engine; especially if the engine has been modified. That's because most engines are typically assembled from the factory using Torque-To-Yield (TTY) bolts and preloaded to yield and beyond (typically 100-110%). Any increases in combustion pressure can lead to problems like blown head gaskets or catastrophic engine failure. Furthermore, because TTY bolts are yielded by design, they should never be re-used.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\" style=\"font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; line-height: normal; font-family: Helvetica; margin: 0px; color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: tahoma, geneva, sans-serif;\"\u003e\u003cbr\u003eARP is the industry leader when it comes to fasteners and offers heavy-duty head studs for a wide variety of popular diesel applications. Using head studs instead of standard head bolts provides your engine with the clamping force required to keep your cylinder heads from lifting and blowing a head gasket due to higher combustion pressures. For the 230-4201 Head Studs, ARP starts with a premium grade ARP2000 alloy that is rated far superior to aircraft quality alloy steels. ARP2000 is an alloy steel that can be safely heat treated to a higher level, producing a greater strength material than Chrome Moly 8740. While 8740 and ARP2000 share similar characteristics,\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\" style=\"font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; line-height: normal; font-family: Helvetica; margin: 0px; color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: tahoma, geneva, sans-serif;\"\u003eARP2000 is capable of achieving a higher clamp load at 220,000 psi.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\" style=\"font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; line-height: normal; font-family: Helvetica; margin: 0px; color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: tahoma, geneva, sans-serif;\"\u003e\u003cbr\u003eEach stud is placed vertically into special racks and precisely heat-treated. This procedure ensures complete heat penetration and is far superior to those lower quality studs from other manufacturers who just drop pieces in a basket. ARP head studs then begin a centerless grinding process to ensure that they are perfectly concentric. As many as ten separate machining steps are required to achieve this level of accuracy. The thread rolling operation is also done after the heat-treatment, which gives them about 2000% (that's 20 times) better fatigue strength than lesser studs that are threaded prior to heat-treat. It costs a lot more to do it this way, because it's tough on tooling, but the results are worth the additional effort. Fasteners are then shot-peened to remove any surface irregularities and upgrade the overall external integrity. Finally, a metal finishing process is also performed in-house with a durable black oxide coating applied for improved corrosion resistance.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\" style=\"font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; line-height: normal; font-family: Helvetica; margin: 0px; color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: tahoma, geneva, sans-serif;\"\u003e\u003cbr\u003eThere is a good reason that virtually every top professional engine builder relies on ARP head studs for their all-out competition powerplants. Simply put, there's not a better stud setup on the market today. This head stud kit is a direct-fit for the 6.6l. Duramax LB7\/LLY\/LBZ\/I LIML engine found in Chevy Silverado and GMC Sierra 2500HD\/3500HD pickup trucks and Express\/Savana vans.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cdiv style=\"margin-left: 40px;\"\u003e\n\u003cul\u003e\n\u003cli class=\"p1\" style=\"margin: 0px; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 13px; line-height: normal; font-family: 'Helvetica Neue'; color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: tahoma,geneva,sans-serif;\"\u003eProprietary ARP 2000 Material\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"p1\" style=\"margin: 0px; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 13px; line-height: normal; font-family: 'Helvetica Neue'; color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: tahoma,geneva,sans-serif;\"\u003eRated At 220,000 Psi Tensile Strength\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"p1\" style=\"margin: 0px; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 13px; line-height: normal; font-family: 'Helvetica Neue'; color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: tahoma,geneva,sans-serif;\"\u003eIncludes Chrome Moly Steel 12-Point Nuts\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"p1\" style=\"margin: 0px; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 13px; line-height: normal; font-family: 'Helvetica Neue'; color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: tahoma,geneva,sans-serif;\"\u003eBlack Oxide Coating For Improved Corrosion Resistance\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"p1\" style=\"margin: 0px; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 13px; line-height: normal; font-family: 'Helvetica Neue'; color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: tahoma,geneva,sans-serif;\"\u003eCenterless Ground To Ensure They Are Perfectly Concentric\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"p1\" style=\"margin: 0px; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 13px; line-height: normal; font-family: 'Helvetica Neue'; color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: tahoma,geneva,sans-serif;\"\u003eImproved Clamping Force Prevents Cylinder Heads From Lifting\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"p1\" style=\"margin: 0px; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 13px; line-height: normal; font-family: 'Helvetica Neue'; color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: tahoma,geneva,sans-serif;\"\u003eBroached Stud Ends Install \u0026amp; Make Cylinder Head Removal Easier\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"p1\" style=\"margin: 0px; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 13px; line-height: normal; font-family: 'Helvetica Neue'; color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: tahoma,geneva,sans-serif;\"\u003eHeat-Treated Prior To Thread Rolling And Machining For Optimum Fatigue Strength\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"p1\" style=\"margin: 0px; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 13px; line-height: normal; font-family: 'Helvetica Neue'; color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: tahoma,geneva,sans-serif;\"\u003eShot-Peened To Remove Any Surface Irregularities And Upgrade The Overall External Integrity\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"p1\" style=\"margin: 0px; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 13px; line-height: normal; font-family: 'Helvetica Neue'; color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: tahoma,geneva,sans-serif;\"\u003eHardened Parallel Ground Washers For An Even Load Distribution And More Accurate Torque Readings\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"p1\" style=\"margin: 0px; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 13px; line-height: normal; font-family: 'Helvetica Neue'; color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: tahoma,geneva,sans-serif;\"\u003eComes With 0.50z Of ARP Fastener Assembly Lubricant\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":49685273575712,"sku":"230-4201","price":640.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0916\/3043\/6640\/files\/arp-230-4201-diesel-head-stud-kit-2001-2016-duramax-5022253.png?v=1779549067"},{"product_id":"230-4202","title":"ARP 230-4202 Diesel Custom Age 625+ Head Stud Kit (2001-2016 Duramax)","description":"\u003ch2\u003e\n\tGeneral Description\u003c\/h2\u003e\n\u003cdiv style=\"margin-left: 40px;\"\u003e\n\t\u003cp class=\"p1\" style=\"font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; line-height: normal; font-family: Helvetica; margin: 0px; color: rgb(0, 0, 0);\"\u003e\n\t\t\u003cspan style=\"font-family: tahoma, geneva, sans-serif;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003eThe ARP Diesel Custom Age 625+ Head Stud Kit 230-4202 is the ultimate head stud kit for high horsepower 2001-2016 GM 6.6L Duramax engines. ARP has provided an extra measure of security in the form of extra-strong head studs manufactured from the firm's proprietary Custom Age 625+ material that has a minimum rating of 260,000 psi tensile strength. They are engineered to provide the clamping force required to keep cylinder heads from lifting due to exceptionally high combustion pressures and horsepower levels.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\t\u003cp class=\"p1\" style=\"font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; line-height: normal; font-family: Helvetica; margin: 0px; color: rgb(0, 0, 0);\"\u003e\n\t\t\u003cspan style=\"font-family: tahoma, geneva, sans-serif;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cbr\u003e\n\t\tThe studs are manufactured in ARPs Santa Paula, CA plant, with threads rolled after heat treating to provide optimum fatigue strength. They are centerless ground to assure perfect concentricity. The ends of the studs are broached to acilitate easy installation. This feature also enables the cylinder head to be removed in tight quarters. Fits LB7, LLY, LBZ, LMM, LML engines.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003e\n\tFeatures\u003c\/h2\u003e\n\u003cdiv style=\"margin-left: 40px;\"\u003e\n\t\u003cul\u003e\n\t\t\u003cli class=\"p1\" style='margin: 0px; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 13px; line-height: normal; font-family: \"Helvetica Neue\"; color: rgb(0, 0, 0);'\u003e\n\t\t\t\u003cspan style=\"font-size:16px;\"\u003e\u003cspan style=\"font-family:tahoma,geneva,sans-serif;\"\u003eARP 625+ Material\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\t\t\u003cli class=\"p1\" style='margin: 0px; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 13px; line-height: normal; font-family: \"Helvetica Neue\"; color: rgb(0, 0, 0);'\u003e\n\t\t\t\u003cspan style=\"font-size:16px;\"\u003e\u003cspan style=\"font-family:tahoma,geneva,sans-serif;\"\u003e260,000 PSI Tensile Strength\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\t\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cbr\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":49685274558752,"sku":"230-4202","price":1727.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0916\/3043\/6640\/files\/arp-230-4202-diesel-custom-age-625-head-stud-kit-2001-2016-duramax-3986883.png?v=1779549008"},{"product_id":"ppe-118034300-head-stud-kit-2001-2016-duramax","title":"PPE 118034300 Head Stud Kit (2001-2016 Duramax)","description":"\u003cp\u003eEngine builders understand the need for high-strength holding power and fasteners that are precision-engineered to handle the extreme stresses that high-performance diesel engines produce. The PPE Head Stud Kit exceeds industry standards required by performance engines. PPE Head Studs are precision center-less ground for accuracy. Threads rolled to Mil-S-8879 specifications for increased strength while reducing stress at the threads.\u003c\/p\u003e\n\u003cp\u003eWhether on the highway, off-road, strip or street, confidence comes from knowing these Head Studs exceed your needs. Highly recommended for boost levels 45 psi and higher. With an independently tested and verified tensile strength of over 231,900 psi, these Studs out-perform even the most venerable manufacturer. Kits come complete with hardened parallel washers, nuts, and specially formulated assembly grease for uniform load distribution and accurate torque readings.\u003c\/p\u003e","brand":"Pacific Performance Engineering","offers":[{"title":"Default Title","offer_id":51539696779552,"sku":"118034300","price":539.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0916\/3043\/6640\/files\/ppe-118034300-head-stud-kit-2001-2016-duramax-4739545.webp?v=1779540909"},{"product_id":"ppe-110100103-cast-iron-cylinder-head-2004-5-2010-duramax","title":"PPE 110100103 Cast Iron Cylinder Head (2004.5-2010 Duramax)","description":"\u003cp\u003eThe OEM Duramax cast-aluminum cylinder heads fall short over time - the different heat expansion rates between cast-iron engine block and cast-aluminum cylinder head cause head gasket scrubbing, and eventually blown head gaskets. The aluminum cylinder heads are also prone to warping, melting and\/or cracking in high-performance applications where excessive heat is introduced.\u003c\/p\u003e\n\u003cp\u003ePPE’s Cast Iron Cylinder Head is the ultimate upgrade to your Duramax engine and eliminates any head gasket or cracking concerns. Cast from high quality alloyed grey iron, the PPE Cylinder Head offers elevated fatigue strength, heat and creep resistance, which prolongs the cylinder head’s lifespan significantly. PPE Cylinder Heads also share the same heat expansion rate as the stock cast-iron cylinder block – no more blown head gaskets.\u003c\/p\u003e\n\u003cp\u003eEach head comes complete with upgraded valve train components. All valves are made of superior materials and fully nitridated. The valve springs feature higher spring rate, lighter retainers\/locators, enabling faster response during higher RPMs. Alloy valve seats provide superior wear and heat resistance. The denser and stiffer material properties from the cast-iron construction also significantly reduce engine clatter.  \u003c\/p\u003e\n\u003cp\u003eWhether you have a damaged aluminum cylinder head or a desire for better reliability and longevity on your Duramax engine, the PPE Cast Iron Cylinder Head is undoubtedly the best choice.\u003c\/p\u003e","brand":"Pacific Performance Engineering","offers":[{"title":"Default Title","offer_id":51542284304672,"sku":"110100103","price":1349.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0916\/3043\/6640\/files\/ppe-110100103-cast-iron-cylinder-head-20045-2010-duramax-5043008.webp?v=1779540853"},{"product_id":"ppe-118034100-main-stud-kit-2006-2016-duramax","title":"PPE 118034100 Main Stud Kit (2006-2016 Duramax)","description":"\u003cp\u003eMain cap bolts are a crucial component to maintain crankshaft alignment and ensure proper seals at the main bearing caps. Stock main cap bolts often yield in performance applications or even in stock conditions as stress cycles cumulate, which can lead to catastrophic engine failure. The PPE Main Stud Kit is designed to address this common failure point.\u003c\/p\u003e\n\u003cp\u003eThe PPE Main Studs are constructed of premium chrome-moly alloy with over 215,000 psi yield strength and over 230,000 psi tensile strength. Each stud is heat treated before being centerless ground and thread rolled, which effectively reduces stress concentration and results in a much higher fatigue resistance. Broaching of studs is performed via EDM to ensure top-level precision. All studs and nuts come with black oxide finish.\u003c\/p\u003e\n\u003cp\u003eThe kit comes complete with assembly lubricant packet for uniform load distribution and accurate torque readings.\u003c\/p\u003e\n\u003cp\u003eAlso Available:\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eGM 6.6L DURAMAX HEAD STUD KIT\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(\u003ca href=\"https:\/\/ppepower.com\/products\/ppe-head-stud-kit-gm-6-6l?variant=42081866580211\" rel=\"noopener\" target=\"_blank\"\u003e118034300\u003c\/a\u003e)\u003c\/p\u003e","brand":"Pacific Performance Engineering","offers":[{"title":"Default Title","offer_id":51542507225376,"sku":"118034100","price":229.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0916\/3043\/6640\/files\/ppe-118034100-main-stud-kit-2006-2016-duramax-1699821.webp?v=1779540850"},{"product_id":"ppe-118034350-high-yield-head-stud-kit-2001-2016-duramax","title":"PPE 118034350 High Yield Head Stud Kit (2001-2016 Duramax)","description":"\u003cp\u003eFor engine builders who demand the ultimate level of strength and precision in their fasteners, the PPE-288 Head Stud Kit is the ultimate solution. Our proprietary alloy is specially formulated for improved hardenability and superior stability in high-temperature environments. Its ultra-low impurity level also allows for better durability when compared to its competitions.\u003c\/p\u003e\n\u003cp\u003eWith an independent lab tested tensile strength of over 280,000 psi, these studs allow for the extra high clamp load in extreme applications as well as preserving excellent fatigue behavior - they will definitely surpass your expectations and deliver the performance and reliability that you need.\u003c\/p\u003e\n\u003cp\u003eWith accuracy and durability in mind, each PPE fastener is heat treated, precision centerless grinded, thread rolled, and surface treated, resulting in superior durability and reduced stress concentration at threads.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"GM 6.6L Duramax Head Stud Kit, PPE-288 High Yield, 2001-2016\" width=\"500\" class=\"lazyShow\" data-src=\"https:\/\/ppepower.com\/cdn\/shop\/files\/Head-Stud-Kit-GM-6.6L-Duramax-2001-2016-PPE-High-Yield_118034350_1_2500x.jpg?v=1754528109\" data-srcset=\"\" srcset=\"\" src=\"https:\/\/ppepower.com\/cdn\/shop\/files\/Head-Stud-Kit-GM-6.6L-Duramax-2001-2016-PPE-High-Yield_118034350_1_2500x.jpg?v=1754528109\"\u003e\u003c\/p\u003e\n\u003cp\u003eEach kit includes 12-pt nuts, washers, head bolts, and an assembly grease packet for uniform load distribution and accurate torque readings.\u003c\/p\u003e","brand":"Pacific Performance Engineering","offers":[{"title":"Default Title","offer_id":51543329997088,"sku":"118034350","price":1709.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0916\/3043\/6640\/files\/ppe-118034350-high-yield-head-stud-kit-2001-2016-duramax-8062284.webp?v=1779540790"},{"product_id":"ppe-110100113-cast-iron-ported-cylinder-head-2004-5-2010-duramax","title":"PPE 110100113 Cast Iron Ported Cylinder Head (2004.5-2010 Duramax)","description":"\u003cp\u003eThe OEM Duramax cast-aluminum cylinder heads fall short over time - the different heat expansion rates between cast-iron engine block and cast-aluminum cylinder head cause head gasket scrubbing, and eventually blown head gaskets. The aluminum cylinder heads are also prone to warping, melting, and\/or cracking in high-performance applications where excessive heat is introduced.\u003c\/p\u003e\n\u003cp\u003ePPE’s new ported Cast Iron Cylinder Head is the ultimate upgrade to your Duramax engine and eliminates any head gasket or cracking concerns. Cast from high-quality alloyed gray iron, the PPE Cylinder Head offers elevated fatigue strength, heat, and creep resistance, which prolongs the cylinder head’s lifespan significantly. PPE Cylinder Head also shares the same heat expansion rate as the stock cast-iron cylinder block – no more blown head gaskets.\u003c\/p\u003e\n\u003cp\u003eOur CNC porting process improves airflow, enhancing power, fuel efficiency, and throttle response while reducing engine stress and turbo lag. By smoothing the ports and maintaining wall thickness, these heads provide increased horsepower and torque without sacrificing reliability. Tailored to each specific head, the CNC machining compensates for casting variations, ensuring consistent and optimized airflow dynamics. Whether you have a damaged aluminum cylinder head or a desire for better reliability and longevity on your Duramax engine, the PPE Cast Iron Cylinder Head is undoubtedly the best choice. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e*Important Note:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe valve seats of the PPE Heavy Cast Iron Cylinder Heads are installed with an interference that maximizes the durability and lifespan of the cylinder heads. Such interference might not be optimal for extreme-performance applications where a significant amount of heat is created. For those applications, PPE suggests that the exhaust valve seats be replaced with higher interference (+0.006'' to +0.008'') oversized exhaust valve seats (Nominal size 34mm).\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/ppepower.com\/products\/duramax-ported-cast-iron-cylinder-head-2004-5-2010-gm-6-6l-one-lly-lbz-lmm?variant=46238502781171#\"\u003e\u003cstrong\u003eRequires the use of LBZ\/LMM glow plugs on LLY engines\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Pacific Performance Engineering","offers":[{"title":"Default Title","offer_id":51543412212000,"sku":"110100113","price":1709.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0916\/3043\/6640\/files\/ppe-110100113-cast-iron-ported-cylinder-head-20045-2010-duramax-9248705.webp?v=1779540912"},{"product_id":"ppe-110100063-bare-cast-iron-cylinder-head-2004-5-2010-duramax","title":"PPE 110100063 Bare Cast Iron Cylinder Head (2004.5-2010 Duramax)","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eLB7 cast iron cylinder head with no valvetrain components or valve seats. It requires a custom valve job applied either directly to the cast iron surface or pocket machining with desired tolerances for the intake and exhaust valve seats being used. It does not come with valves, springs, or locks. Valve guides and freeze plugs are included.\u003c\/span\u003e\u003c\/p\u003e","brand":"Pacific Performance Engineering","offers":[{"title":"Default Title","offer_id":51581417521440,"sku":"110100063","price":809.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0916\/3043\/6640\/files\/ppe-110100063-bare-cast-iron-cylinder-head-20045-2010-duramax-1109794.webp?v=1779540790"}],"url":"https:\/\/www.southerndieselsupply.com\/collections\/gmc-2006-2007-lbz-engine-heads-studs.oembed","provider":"Southern Diesel Supply","version":"1.0","type":"link"}