618-04129A Spindle Assy for Cub Cadet MTD LT1050 618-04129B 918-04129B 918-04129

Product Overview

This spindle assembly is a OEM-grade replacement component for Cub Cadet and MTD mower decks, supporting the blade and housing the bearings for smooth rotation. It restores cutting performance on tractors like the LT1050 and reduces vibration caused by worn spindles. The part is engineered to match original factory specifications.

Key Features & Performance

• Includes housing, bearing, and shaft assembly for complete replacement
• Double-sealed bearings protect against debris and moisture
• Directly replaces part numbers 618-04129A, 618-04129B, 918-04129B, 918-04129
• Durable cast iron construction for long service life
• Pre-drilled mounting holes for simple bolt-on installation

Fitment & Compatibility

• Fits Cub Cadet LT1050 lawn tractor
• Compatible with select MTD and Cub Cadet mowers using these part numbers

Common Uses

• Replacing a noisy or wobbling spindle on a Cub Cadet or MTD mower deck
• Restoring blade balance for a more even cut
• Performing preventive maintenance during deck service

Technical Specifications

• Part Number(s): 618-04129A, 618-04129B, 918-04129B, 918-04129
• Material: Cast iron housing with steel shaft
• Bearing Type: Double-sealed ball bearing
• Mounting: Bolt-on, uses existing hardware

Frequently Asked Questions

Q: Will this spindle assembly fit my Cub Cadet LT1050 with a 50" deck? A: Yes, this spindle is designed for the LT1050 model and matches the OEM part numbers used on that tractor.

Q: Is the spindle pre-assembled and ready to install? A: Yes, the assembly comes fully assembled with the bearing and shaft installed—just bolt it onto your deck.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.