YY-US Steering Sector Plate & Pinion Kit for John Deere LA100–LA175 — 19-Tooth D-Series, Metal & Plastic Bushings

Complete steering sector plate and pinion gear bushing kit for John Deere LA-series mowers — a direct-fit replacement including metal and plastic bushings, hardware, and D-series 19-tooth gears.

When your lawn tractor exhibits play in the steering or a rough, notchy feel while turning, worn sector plate and pinion components are often the root cause. This YY-US kit replaces the sector plate, pinion gear, metal bushing and two plastic bushings plus mounting nut and bolt, restoring the intended steering geometry on many John Deere LA, D, X and 100-series models. Parts are matched to OEM cross-reference numbers (including GU5785GE100HF) and specify the D-series 19-tooth configuration for correct engagement.

How will this kit restore steering performance?

Replacing both the sector plate and pinion together removes worn contact points and eliminates excessive free-play in the steering column. The included metal and plastic bushings recreate the original bearing surfaces to reduce friction and chatter.

• Full replacement: sector plate + pinion gear for matched tooth count
• New metal bushing for durable pivot support
• Two plastic bushings to reduce friction and noise
• Includes necessary nut and bolt for straightforward installation

Which models does this YY-US kit fit?

This kit is engineered as a direct-fit alternative for a broad range of John Deere lawn tractors across LA, D, X and 100-series model families. Confirm fit by matching the part numbers or checking that your existing pinion has 19 teeth.

• Compatible with John Deere LA100–LA175 ranges (e.g., LA130, LA135, LA145)
• Works with John Deere 102, 105, 107S, 115, 125, 135, 145, 155C, 190C
• Fits D-series: D100–D170 models that use D-series 19-tooth gears
• Also fits X-series models like X110, X120, X125, X130R and X165

What’s included and what should I check before installing?

The kit ships with all steering components you need to replace the worn assembly. Before installation, verify the pinion tooth count, inspect the steering shaft and mounting points for damage, and compare the supplied parts to your worn components.

• Included: sector plate (GX21924BLE), pinion gear (GX20053), metal bushing (GX20054)
• Included: two plastic bushings (GX21994) plus nut and bolt
• Confirm pinion has 19 teeth and cross-reference GU5785GE100HF to ensure fit
• Inspect steering shaft and mounting hardware for wear before reassembly

How difficult is the installation and what tools are needed?

Installation is a moderate DIY task for someone comfortable with small-engine repairs. Basic hand tools and simple disassembly of the steering housing are usually sufficient; the included hardware minimizes the need for extra parts.

• Typical tools: socket set, wrench, screwdrivers, and a torque wrench for final tightening
• Allow time to safely support the mower and remove the steering housing
• Follow torque specs and alignment steps to avoid premature wear
• If unsure, consult a service manual or a professional technician

Who is this for: This YY-US steering sector plate and pinion gear bushing kit is intended for homeowners, landscapers, and mower technicians maintaining John Deere LA, D, X or compatible 100-series tractors that require replacement steering components. Choose this kit if your tractor shows steering looseness, binding, or unusual noise and you want a complete, OEM-referenced set to restore correct steering engagement without sourcing multiple parts separately.