MowerPartsGroup (1) Spindle Assembly MTD Cub Cadet 918-0427 618-0427A 918-0324 618-0324A Spindle Assembly Replaces: Cub Cadet/MTD: 918-0427C, 918-0427, 618-0427A, 918-0324; 618-0324, 918-0427A, 618-0427C, 618-0427, 618-0324A Fits 1170, 1600, 1800 and RZT mowers with 42" decks using star hole blades Please ask if you are unsure these parts will work for your unit.