For all kinds of cabs for gasoline engines
Replacement primer bulb for Walbro carburetors. Fits WA-167, WT-603, WT-643, WT-644, WT-668, WT-990, WT-1107, WT-813, WYK-33, WYK-58, etc - basically, all the Walbro carbs we stock except for the HDA-223, which uses a larger bulb.
Zenoah part #1751-81510
FG part #07373
Walbro Part #188-12
Also available in an ethanol/UV (ultraviolet light) resistant version, see item av489b in the "also purchased with this item" at the bottom of this page.