Review on ACDelco 131 121 Original Equipment Thermostat by Cris Drew
Just the right temperature.
I changed this when I changed the coolant. The part number is a GM number so I'll assume it's OEM if it's not genuine, but the price doesn't reflect authenticity. I read where these details are for specific GM applications. AC Delco parts that say "professional" are more generic. Works fine for me on vortec 8.1. Now that winter has come, the engine warms up for a long time. I think it's the GM V8, not the thermostat.
- Hands-free operation
- Nothing here
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