Transmission Housing
This case is identified as part of the transmission assembly. Its general role is to enclose and support the transmission’s internal components while providing the structural framework for the surrounding assembly.
Honda · Genuine OEM Part
The Honda CASE, TRANSMISSION is the housing component identified in the transmission assembly. It forms the structural enclosure for the transmission’s internal parts and provides the mounting environment needed to keep those components located relative to one another during operation.
The Honda catalog name should be retained when ordering or documenting the part so the correct case is distinguished from gaskets, shafts, gears, bearings, seals, and other transmission components.
This case is identified as part of the transmission assembly. Its general role is to enclose and support the transmission’s internal components while providing the structural framework for the surrounding assembly.
Honda lists this part as CASE, TRANSMISSION. Retaining that exact catalog name and the complete part number helps distinguish the case from the separate transmission gaskets, shafts, gears, bearings, and seals listed nearby.
The Honda OEM fiche lists one required unit for the transmission assembly. This quantity describes the assembly listing and should not be interpreted as a package quantity unless the seller separately states packaging details.
| Honda Part Number | 21200-K0W-A10 |
|---|---|
| Honda Catalog Description | CASE, TRANSMISSION |
| Part Type | Case |
| Assembly | Transmission |
| Fiche quantity | 1 |
| Model | Type | Model Years |
|---|---|---|
| ADV150A | Motorcycle | 2021–2023 |
Model applications as listed in Honda's dealer parts catalog for part number 21200-K0W-A10.
Verify the Honda OEM part number for your specific model before ordering.

Compatible motorcycles, ATVs & side-by-sides
Verify your vehicle's model, year and specific configuration before ordering.