{"product_id":"arp-625-cylinder-head-stud-kit-for-mercedes-amg-m177-4-0l-biturbo-v8","title":"ARP 625+ Cylinder Head Stud Kit for Mercedes-AMG M177 (4.0L BiTurbo V8)","description":"\u003cp\u003e\u003cstrong\u003eBuilt to hold boost. Engineered for extreme power.\u003c\/strong\u003e\u003cbr\u003eIf you're chasing serious horsepower from your \u003cstrong\u003eMercedes-AMG M177\u003c\/strong\u003e, there's one thing you can't compromise on — engine strength. The \u003cstrong\u003eARP 625+ Cylinder Head Stud Kit\u003c\/strong\u003e is the ultimate solution for head sealing and structural integrity in high-boost, high-power AMG builds. Whether you're running upgraded turbos, ethanol, or preparing for track abuse, these studs are your insurance policy.\u003c\/p\u003e\n\u003cp\u003eTrusted by top engine builders and race teams worldwide, \u003cstrong\u003eARP 625+ hardware\u003c\/strong\u003e is the gold standard in head stud technology — and now it’s available specifically for the M177 platform.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e✅ Features \u0026amp; Benefits:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e625+ Custom Age Material\u003c\/strong\u003e\u003cbr\u003eManufactured from ARP’s \u003cstrong\u003eproprietary Custom Age 625+ alloy\u003c\/strong\u003e, delivering unmatched strength with a tensile rating of \u003cstrong\u003e260,000+ psi\u003c\/strong\u003e — far superior to OEM bolts and ARP 2000 series.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDesigned for High-Boost Applications\u003c\/strong\u003e\u003cbr\u003ePrevents head lift and gasket failure in engines producing \u003cstrong\u003e800–1,200+ horsepower\u003c\/strong\u003e, especially in vehicles running large turbos, meth injection, or E85.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFull Installation Kit\u003c\/strong\u003e\u003cbr\u003eIncludes head studs, 20-point nuts and lubricant, for even clamping force and optimal torque distribution.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eReusable \u0026amp; Reliable\u003c\/strong\u003e\u003cbr\u003eUnlike torque-to-yield OEM bolts, these studs can be reused and provide consistent torque values for future teardowns or rebuilds.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMade for M177\u003c\/strong\u003e\u003cbr\u003ePrecision-engineered to fit the M177 block without modification. Compatible with OEM and aftermarket head gaskets.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e📈 Performance Advantages:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003ePrevents \u003cstrong\u003ecylinder head lift under extreme pressure\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMaintains proper sealing at high RPMs and boost levels\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSupports \u003cstrong\u003etrack, drag, and high-performance street use\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIncreases engine \u003cstrong\u003edurability and long-term reliability\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e💬 Why Choose ARP 625+ for Your AMG?\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eM177 is a monster from the factory\u003c\/strong\u003e, but once you start pushing past stock limits — especially with larger turbos or ethanol blends — \u003cstrong\u003eOEM head bolts become a weak link\u003c\/strong\u003e. ARP 625+ head studs are the solution, giving your engine the reinforcement it needs to handle serious pressure without compromise.\u003c\/p\u003e\n\u003cp\u003eThis is \u003cstrong\u003emust-have hardware\u003c\/strong\u003e for any serious build.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e⚙️ Vehicle Compatibility:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMercedes-AMG E63 \/ E63S (W213)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMercedes-AMG G63 (W463)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMercedes-AMG GT63 \/ GT63S (X290)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAMG S63 \/ S560 with M177\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAny model equipped with the \u003cstrong\u003eM177 4.0L BiTurbo V8 engine\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e🔧 Installation:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eProfessional engine builder installation highly recommended\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTorque specs and installation guide included\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompatible with factory or upgraded MLS head gaskets\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e🔒 Lock It Down. Push It Further.\u003c\/h3\u003e\n\u003cp\u003eWhen boost goes up, weak bolts bow out. Keep your heads locked in place and your build on the edge — \u003cstrong\u003eupgrade to ARP 625+ Head Studs\u003c\/strong\u003e and give your M177 the bulletproof confidence it was born to unleash.\u003c\/p\u003e\n\u003chr\u003e","brand":"TME Performance","offers":[{"title":"Default Title","offer_id":54988562530626,"sku":null,"price":2039.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/7224\/2242\/files\/DSC07713_efb86fba-d865-426e-bd88-543727c1673d.jpg?v=1784140595","url":"https:\/\/spoolperformance.com\/products\/arp-625-cylinder-head-stud-kit-for-mercedes-amg-m177-4-0l-biturbo-v8","provider":"Spool Performance","version":"1.0","type":"link"}