THIS WHEEL MOTOR REPLACES PART NUMBERS 1-603718, 025-515, TE0230FS250AAFA, BME2-230-H4S-T-R-B, DX-1433, AND 27-501. FITS MODELS EXMARK 52" AND 60" TURF TRACER FLOATING DECK WALK-BEHIND (190,000 AND NEWER, WITHOUT ECS); VIKING HYDRO SERIAL NO. 90,000-130,000; TURF TRACER HYDRO SERIAL NO. 70,000-129,000; 36", 48" AND 52" TURF TRACER HP SERIAL NO. 150,000-260,000. WHEN ORDERING AND REPLACING A HYDRO PUMP, ALWAYS REPLACE THE WHEEL MOTOR AND LINES, FLUSH THE TANKS AND INSTALL A NEW OIL FILTER. NOT DOING SO COULD CAUSE THE HYDRO PUMP TO FAIL DUE TO CONTAMINATION IN THE SYSTEM. THIS WOULD NOT BE COVERED UNDER OUR WARRANTY. Warning: Lead-Nickel-Cancer and Reproductive Harm