Product Description
180 Degree Thermostat
Replaces GM thermostat from a LS1, LS2, pre-2008.
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.
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Thermostat
Looks like a good product. Not installed yet.