OEM R020002 

3/8 in. NPT Single Station Temperature Sender

• PCM 302
• GT40 in circulation pump
• Some Mercruisers,  part# 806490T
• Early LT1 in the Thermostat housing & then moved to cylinder head around 1995
• Tapered threads are aproximately 3/4" in diameter
• Also used in some PCM GM engines around 2002 -2005 located in the Thermostat housing
• 3/4" wrench size on nut

Engine temperature sending unit sends signal to temperature gauge

 Single station