Yes, the thermostat housing is installed on the return coolant line, above the cylinder. It receives coolant from the top of the left radiator, and sends coolant back to the engine via the hose which enters the cylinder by the spark plug. The thermostat housing is configured exactly as shown in the photograph, and is sold for a very reasonable price on Taobao. Of course, you can also purchase the thermostat housing from CSC, in Azusa, California.
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Spud
"Never argue with an idiot. He will drag you down to his level, and beat you with experience."
Mark Twain
2015 Zongshen ZS250GY-3 (RX3)
2006 Zongshen ZS200GY-2 (Sierra 200)
2005 Honda XR650L
2004 Honda CRF250X
1998 Kawasaki KDX220
Mods made to my Zongshen ZS200GY-2:
http://www.chinariders.net/showthread.php?t=6894