Feature 1.Great Compatibility — Fits General Pump Models: T1508 T2021 T9051 TP2021 TP2526 TP2530 TP2533 TT1510 TT1511 TT1512 TT1513 TT1540 TT2028 TT2035 TT551 TT561 TT741 TT751 TT901 TT9061 TT9071 TT9091 TT931 TT941 TT951 Fits Interpump 2.Pump Models — W1507 WW1508 WW1509 WW1510 WW1511WW1513 WW55 WW56 WW74 WW75 WW90 WW906 WW907 WW909 WW93 WW94 WW95 3.Precise machining: Each part is manufactured to OEM specifications and precision-engineered. OEM Part K96 Seal set with Brass Retainer for TT & TP Series 51 Pumps (15mm). .