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Walbro Primer Bulb. Replaces 188-12.

Part #: 20-9478

List Price: $2.26

Our Price: $1.99

20-9478 - Walbro Primer Bulb. Replaces 188-12.

Primer bulb replaces Walbro 188-12.

Fits models WA, WT, WY, WYJ, WYK, WYL, WYP & WZ carburetor's, that require a .755" OD x .560" HT primer bulb.