Head Stud Kit Custom Age

The ARP M156 Head Studs (006-0406-0103) are a premium upgrade designed to replace the factory head bolts in M156 engines. Engineered as a direct replacement, these studs are crafted from ARP's proprietary Custom Age 625+ alloy, known for its exceptional strength and resistance to extreme temperatures and cylinder pressures. This material boasts a tensile strength of 260,000 psi, significantly exceeding that of standard fasteners. These 11mm head studs are specifically designed for the M156 6.2L V8 engine found in Mercedes-Benz C63 models from 2008-2015. Their robust construction ensures maximum cylinder head clamping force, which is critical for maintaining engine integrity under high-performance conditions. The studs feature a 3/8" thread size, a 1.600" Under Head Length (UHL), and a 0.600" thread length, with a head height of 0.365". By upgrading to ARP M156 head studs, enthusiasts can achieve greater reliability and performance, especially when pushing the M156 engine beyond its stock capabilities. These studs are a popular choice for those seeking to enhance the durability and power output of their performance Mercedes-Benz vehicles.