{"product_id":"arp-230-4201-diesel-head-stud-kit","title":"ARP 230-4201 DIESEL HEAD STUD KIT","description":"\u003cp\u003e\u003cspan\u003eUpgrade your 2001-2016 GM 6.6L Duramax LB7\/LLY\/LBZ\/LMM\/LML with an ARP Diesel Head Stud Kit \u003c\/span\u003e\u003ca href=\"tel:230-4201\"\u003e230-4201\u003c\/a\u003e\u003cspan\u003e from XDP. 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\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\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 \u003ca href=\"tel:230-4201\"\u003e230-4201\u003c\/a\u003eHead 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, ARP2000 is capable of achieving a higher clamp load at 220,000 psi.\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\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\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\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\/LMM\/LML engines found in Chevy Silverado and GMC Sierra 2500HD\/3500HD pickup trucks and Express\/Savana vans.\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003e\u003cspan\u003eFEATURES:\u003c\/span\u003e\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eProprietary ARP 2000 Material\u003c\/li\u003e\n\u003cli\u003eRated At 220,000 Psi Tensile Strength\u003c\/li\u003e\n\u003cli\u003eIncludes Chrome Moly Steel 12-Point Nuts\u003c\/li\u003e\n\u003cli\u003eBlack Oxide Coating For Improved Corrosion Resistance\u003c\/li\u003e\n\u003cli\u003eCenterless Ground To Ensure They Are Perfectly Concentric\u003c\/li\u003e\n\u003cli\u003eImproved Clamping Force Prevents Cylinder Heads From Lifting\u003c\/li\u003e\n\u003cli\u003eBroached Stud Ends Install \u0026amp; Make Cylinder Head Removal Easier\u003c\/li\u003e\n\u003cli\u003eHeat-Treated Prior To Thread Rolling And Machining For Optimum Fatigue Strength\u003c\/li\u003e\n\u003cli\u003eShot-Peened To Remove Any Surface Irregularities And Upgrade The Overall External Integrity\u003c\/li\u003e\n\u003cli\u003eHardened Parallel Ground Washers For An Even Load Distribution And More Accurate Torque Readings\u003c\/li\u003e\n\u003cli\u003eComes With 0.5oz Of ARP Fastener Assembly Lubricant\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eXDP Thread Cleaning Chasers (Sold Separately): \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe XDP Thread Cleaning Chasers XD40124TC \u0026amp; XD40128TC are an excellent add-on for the seasoned technician, or the at-home mechanic. Using Thread Cleaning Chasers ensures that you are able to properly clean the threads in your engine block before the installation of this head stud kit. Clean threads will provide you with accurate torque readings which are critical to your head gasket repair, or engine build.\u003c\/div\u003e","brand":"989 diesel supply","offers":[{"title":"Default Title","offer_id":66873845448749,"sku":null,"price":640.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/2728\/2989\/files\/8D955525-8B87-4AA6-80B7-48D736DD9576.webp?v=1781657913","url":"https:\/\/989dieselsupply.com\/products\/arp-230-4201-diesel-head-stud-kit","provider":"989 diesel supply","version":"1.0","type":"link"}