Part Number 41-3034 – A New Original 2-1/8 Freeze Plug For The Engine On A Case 1835B, 1845, 1845S Skid Steer Loaders, Case 480B, 480C, 580B, 580C, 580D Loaders, Case 430, 470, 530, 570 tractors, Case 350 Crawlers.