(3) Mower Spindle Replace Parts: for Hustler 783506. Fits for Hustler 36" 42" FasTrak SD - S/N 07020000 & HIGHER, 36" 42" 48" 54" 60" FasTrak SD AFTER S/N 1011 (FIRST FOUR DIGITS); 42" FasTrak SD S/N PRIOR TO 13043831; 48" FasTrak SD 928374 929374CA 928374EX , 54" FasTrak SD 928382 928382CA 928382EX, 60" FasTrak SD 928481 928481CA 928481EX 929778 929778EX 929786 929786EX 929794 929794EX; 48" 54" 60" FasTrak SD (Export). Fits for Hustler RD FasTrak 48" - 934851 936088 938738 941757 940379 940379CE 941757CE 940445CE ; 54" RD FasTrak 935627 936104 938746 940387 941765 943449CE. Also fits 48" FasTrak SDX 941716CE , 48" 54" 60" Hustler Z4 and 36" Mini Z 42" Mini Z 44" Mini Z 52" Mini Z . Fits 36" 48" 54" Deck for Hustler Trimstar : 36" Trimstar - 929232 930388 930388EX 930388US; 48" Trimstar - 929240, 929265, 929273 PRODUCED PRIOR TO S/N 1101 (FIRST FOUR DIGITS) 930396 930396EX 930396US ; 54" Trimstar - 929240, 929265, 929273 PRODUCED PRIOR TO S/N 1101 (FIRST FOUR DIGITS) 930404 930404EX 930412 930412EX. Fits for Hustler 44" 48" 52" 54" FasTrak PRODUCED PRIOR TO S/N 1011 (FIRST FOUR DIGITS) ; 44" FasTrak 926519 926527 926774 927442; 52" FasTrak 926501 926592 926600 927459; 48" 54" 60" FasTrak PRODUCED AFTER S/N 1011 (FIRST FOUR DIGITS) Deck Spindle Assembly Replaces for 539112170 for Husqvarna EZ 4216 4217 4220 4624 4819 4822 4824 5221 5224 5225 5226