Fits all 2619 & 2639 Model Compressors. or we can rebuild it for you. We have kits for the Thomas 2619, 2639, 2669, 2650, 2660, 2685, 2680, 2688, 2750, 1207, 405, 617, 668, 669, 927, 2807, TA-4101, QR-0100, T models ( 617, T-27,30, 30A, 25HD, T-50, T150, T-100/200, T2820, etc. ).
Pretty easy to install. It took less than half an hour to complete. My motor ran but it was not pumping any air through through the pond aerator. With this kit installed it restored full aeration to my pond. Thanks, great product. Great value saved a lot of time and money to do myself.