Models part 9000056015 fits
If the pilot won't stay lit, this is the usual suspect. Find your model number below before you order; the list is sorted by brand.
GCV40-200AO Smith water heaterGCV50-200AO Smith water heaterGCVH40L-201AO Smith water heaterGVR40-200AO Smith water heaterGVR50-200AO Smith water heaterXCV40-201AO Smith water heaterXCV50-200AO Smith water heaterXCV50-201AO Smith water heaterXCVL40-200AO Smith water heaterXVR50-200AO Smith water heaterXVR50-201AO Smith water heaterGS630UORT100State water heaterGS640HOCT201State water heaterGS640UBRT100State water heaterGS640UOCT100State water heaterGS640YOCS200State water heaterGS640YOCT200State water heaterGS650HOCT201State water heaterEach model's page names where its part numbers come from and the date they were checked. Amazon buttons open a search for the part number; we may earn a commission.