Stihl Parts | Stihl Parts Lookup
Part description: Stihl 4133 121 2700 primer bulb
3/4" O.D.
Other part numbers:
41331212700
Walbro 188-12 / 188-12-1 / 188-14 /
188-14-1
Replacement primer bulb for STIHL
models with Walbro carburetors:
WA, WT, WY, WYJ, WYK, WYL,
WYP and WZ that use a 3/4" O.D. x
9/16" HT primer bulb