{"product_id":"l19-12mm-head-stud-kit-for-6-bolt-4g63","title":"L19 12mm Head Stud Kit for 6-Bolt 4G63","description":"The ARP L19 head studs are a premium replacement kit designed for the 6-bolt 4G63 engine, commonly found in 1G DSM and Galant VR4 models. These studs are engineered to address head lifting issues common in 4G63 blocks operating above 35 PSI, providing a stronger solution for high-performance applications.\n\nThe kit features 12mm studs made from L19 material, a high-strength steel comparable to A1 Technologies H11 Tool Steel. This material boasts a yield strength between 200,000-230,000 psi and a tensile strength of 260,000 psi, allowing for a clamp load of 260,000 psi. This makes them ideal for short track and drag racing where extreme inertia loads are a concern, exceeding the capabilities of standard ARP2000 or 8740 studs.\n\nEach kit includes a full set of 10 L19 studs, 10 8740 washers, 10 8740 chrome moly 12-point nuts, and Ultra-Torque Fastener Assembly Lube. Installation is a direct drop-in replacement for OEM head studs, requiring no modifications to the cylinder head or block. However, special care is necessary when handling L19 studs: always use gloves to avoid direct skin contact, as the material is easily contaminated and susceptible to hydrogen embrittlement, stress corrosion, and moisture exposure. Keep the studs well-oiled at all times.","brand":"ARP","offers":[{"title":"Default Title","offer_id":52664176443704,"sku":"ARP-L19-6B","price":398.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/684796525.webp?v=1784334781","url":"https:\/\/store.motormia.co\/products\/l19-12mm-head-stud-kit-for-6-bolt-4g63","provider":"MOTORMIA","version":"1.0","type":"link"}