Kartiyer Transmission Repair Kit for John Deere D105 E100 — Primary & Secondary RT400 Fit, Seals & Bearings

Kartiyer MIA13031 is a complete primary and secondary transmission repair kit designed to restore shifting performance on compatible John Deere D105, E100, X105 and X106 lawn tractors.

When a hydrostatic or gear-driven deck/drive begins to slip, make noise, or lose smooth engagement, replacing worn components with the correct repair kit can bring back reliable operation. This Kartiyer kit covers many OE and aftermarket reference numbers—so it’s aimed at owners and technicians who need a direct-fit replacement for the RT400-related transmission family. Read on to confirm fitment, see what’s included, and learn how to install or verify compatibility before you buy.

Which John Deere models and transmissions does this kit fit?

This kit is built for specific small-tractor transmissions and lists multiple cross-references to help you match it to your machine. Check your tractor’s parts list or existing transmission stamp to confirm compatibility before ordering.

• Fits John Deere D105, E100, X105, and X106 mower tractors.
• Compatible with RT400-style transmission assemblies.
• Cross-references include MIA13031, MIA12481, MIA12482, GT37419 and several AUC/MIA legacy numbers.
• Replaces transmissions AUC11077, AUC10266, MIA13114, MIA12863, and MIA12656.

What parts and hardware are included in the Kartiyer transmission kit?

The kit groups the primary and secondary components needed for a typical transmission rebuild so you won’t need to source many small parts separately. Exact contents may vary by batch, but the package aims to supply the service items you commonly replace during a repair.

• Seals, gaskets, bearings, and O-rings sized for RT400-related housings.
• Drive and idler hardware that matches documented Kartiyer part references.
• Any specified spacers, pins, or small fasteners commonly replaced during service.
• Packaging includes a parts list—confirm each item on arrival against your repair plan.

How difficult is installation and what tools do I need?

The kit is engineered for routine transmission service, but installation complexity depends on your experience and the tractor’s condition. A competent DIYer with a basic mechanic toolset can perform the replacement; however, consult a service manual or a qualified mechanic when in doubt.

• Basic hand tools required: sockets, wrenches, pliers, torque wrench.
• No specialized OEM-only tools are advertised, but seals and bearings may need a press or careful tapping.
• Follow the tractor’s service manual torque specs and assembly order to avoid damage.
• If you’re unsure about disassembly/reassembly, professional installation is recommended.

What should I check before buying to avoid returns?

Because multiple part numbers and similar-looking housings exist across John Deere models, accurate verification prevents fitment issues. Kartiyer emphasizes confirming part numbers and transmission type prior to purchase.

• Compare your existing transmission stamp or part number with the kit cross-references (listed above).
• Verify your tractor model and serial number against fitment notes for D105, E100, X105, X106.
• Inspect the current transmission model (RT400 compatibility) to ensure the kit matches.
• Contact Kartiyer customer support with your frame number for guidance if unsure.

Who this is for: This Kartiyer MIA13031 transmission repair kit is intended for homeowner-operators, independent small-engine mechanics, and repair shops that service John Deere D105/E100/X105/X106 tractors and need a comprehensive set of replacement seals, bearings, and small components for RT400-related transmission rebuilds. It suits anyone who prefers a full-service kit to reduce parts-sourcing time, provided they confirm fitment against the listed cross-reference numbers and follow safe installation procedures.