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The ARP 12-point thermostat housing bolt kit is a hardware set for LS1 and LS2 engines, specified for thermostat housing installation. It provides 12-point fasteners to replace worn or corroded bolts during engine service. Use this kit when removing or reinstalling the thermostat housing to restore secure, engine-specific fastening and support routine cooling-system maintenance.
ARP LS1 LS2 12pt Thermostat Housing Bolt Kit
