Mr. Gasket 6368 - Thermostat - GM LS2/LS7 2004-'08 - 180 Degree

Fully compatible with 2004-'08 LS Series engines with a separate thermostat and water neck, they open at 180 degrees every time, regardless of engine rpm, and their high-flow design and brass and copper construction eliminate the damaging effects of cycling when you're stuck in stop-and-go traffic. Also fits Mr Gasket water necks 2670, 2671, and 2672.