Replacement Spindle Assembly With Pulley Set of 2 – are vital components of the lawn mower’s cutting deck which enables the blades to work smoothly for an even cut. If your mower blades produce weird grinding noises, have a hard time spinning or spin unevenly then you may have a problem with your spindle assembly. Compatible Replacement for MTD, Troy Bilt & Cub Cadet Riding Mowers With 42 Inch Cutting Deck – CC30 | RZT-42 | RZT-L42 | RZT-S42 | Bronco | R1000 | Z6000 | ZT-S42 KH | TB30 | TB30R | Mustang XP Zero Turn |. Most spindles rotate for 1.8 million times approximately in about 8 hours of cutting. Replaces Part# 918-04822B, 618-04822, 618-04822A, 618-04822B, 918-04889, 918-04889A, 618-04889, 618-04889A, 618-04950, 918-04822, 918-04822A, 918-04950 commonly found on popular riding mowers CC30, RZT42, RZTL42, RZTS42 and more. This spinde assembly with pulley includes the mounting bolts necessary for a proper replacement. OEM Fit, Quality, Finish – While this is not a genuine OEM part, it is a direct replacement and will fit, look and function like the factory spindle if not better. Save money off of dealer prices by purchasing this part and installing it yourself. Lifetime Warranty – This spindle assembly manufactured by AA Ignition comes complete with a lifetime warranty. If the part ever fail simply contact us for a replacement. Save time and money by purchasing this part and taking advantage of our lifetime warranty.