{"product_id":"arp-diesel-custom-age-625-head-stud-kit-247-4204-1998-5-2024-5-9l-6-7l-cummins","title":"ARP DIESEL CUSTOM AGE 625+ HEAD STUD KIT 247-4204 | 1998.5-2024 5.9L\/6.7L CUMMINS","description":"\u003cp\u003e\u003cstrong\u003eARP 247-4204 Custom Age 625+ Head Stud Kit\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for extreme horsepower and competition-level diesel engines, the ARP 247-4204 Custom Age 625+ Head Stud Kit delivers the clamping force needed to keep the cylinder head securely sealed under the highest combustion pressures. Replacing the factory torque-to-yield head bolts with premium ARP studs helps prevent head lift and blown head gaskets in high-performance and heavily modified engines.\u003c\/p\u003e\n\n\u003cp\u003eManufactured from ARP's exclusive Custom Age 625+ super alloy, these head studs offer exceptional fatigue resistance, tensile strength, and corrosion protection. Each stud is heat-treated before machining and thread rolling, centerless ground for precise concentricity, shot-peened for added durability, and finished with a black oxide coating for long-lasting corrosion resistance. The result is one of the strongest and most reliable diesel head stud kits available.\u003c\/p\u003e\n\n\u003cp\u003eComplete with chrome moly 12-point nuts, hardened parallel-ground washers, and ARP Ultra-Torque assembly lubricant, this kit provides everything needed for a professional-quality installation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eManufactured from ARP Custom Age 625+ super alloy\u003c\/li\u003e\n  \u003cli\u003e235,000–255,000 PSI yield strength\u003c\/li\u003e\n  \u003cli\u003e260,000–280,000 PSI tensile strength\u003c\/li\u003e\n  \u003cli\u003eSignificantly stronger than ARP 2000 and 8740 chromoly fasteners\u003c\/li\u003e\n  \u003cli\u003eImproved clamping force helps prevent cylinder head lift\u003c\/li\u003e\n  \u003cli\u003eHeat-treated prior to machining and thread rolling for superior fatigue life\u003c\/li\u003e\n  \u003cli\u003eCenterless ground for exceptional concentricity and accuracy\u003c\/li\u003e\n  \u003cli\u003eShot-peened to improve durability and surface integrity\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish for enhanced corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eBroached stud ends simplify installation and cylinder head removal\u003c\/li\u003e\n  \u003cli\u003eIncludes chrome moly steel 12-point nuts\u003c\/li\u003e\n  \u003cli\u003eIncludes hardened parallel-ground washers for even load distribution\u003c\/li\u003e\n  \u003cli\u003eIncludes ARP Ultra-Torque fastener assembly lubricant\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":52656478847259,"sku":"247-4204","price":1232.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/5757\/3147\/files\/Screenshot2026-07-23at11.02.07AM.png?v=1784826165","url":"https:\/\/wwmperformance.com\/products\/arp-diesel-custom-age-625-head-stud-kit-247-4204-1998-5-2024-5-9l-6-7l-cummins","provider":"WWM Performance","version":"1.0","type":"link"}