Toro 93-7198 Gas Cap Assembly Genuine OEM Toro Part Replaces: 93-7196 Measures 2.5" diameter; 2" inner diameter Fits several Toro mowers/tractors, including: 20791, 20789, 22176, 22176TE, 22177, 22177TE, 22178TE, 22187, 22188TE, 22189, 22189TE, 26632B, 26638