ARP Head Bolt Kits | Multiple Chevrolet Fitments (234-3603)ARP Head Bolt Kits Universal Fitment Part #: 234 3603 Overview The ARP Head Bolt Kit from the Pro Series is engineered to deliver exceptional strength and reliability for Chevrolet engines, including the high performance LSA models. Designed with precision manufacturing and high quality materials, these head bolts are essential for engine rebuilds, upgrades, or high performance applications where maintaining optimal cylinder head sealing is critical.