Primer Bulb Fits Walbro Carberutor Models On Fits Poulan Equipment WT-630-1One New Aftermarket Replacement Primer Bulb Fits Walbro Carberutor Models (On Fits Poulan Equipment) WT 630 1, WT 631 1, WT 632 1, WT 638 1 Also Fits Walbro Models on Fits Poulan Equipment WT 501 1, WT 519 1, WT 557 1, WT 558 1, WT 586 1, WT 587 1, WT 592 1, WT 606 1, WT 626 1 WA 224 1, WA 226 1, WA 228 1, WA 229 1, WA 230 1, WA 232 1 Tech Info: **Fits Walbro WA and WT Carburetors on Fits Poulan Equipment** Replaces Part Numbers: (Fits Poulan) 530 03