Washer
Washer sizes and materials
Engine oil drain bolt
| Inner diameter | 14mm |
| Outer diameter | 24mm |
| Metal | Aluminium |
| OEM Part | x |
Transmission oil drain bolt
| Inner diameter | 14mm |
| Outer diameter | 24mm |
| Metal | Aluminium |
| OEM Part | Honda #91409-14000 |
Gearbox oil filling bolt
| Inner diameter | 20mm |
| Outer diameter | x |
| Metal | Aluminium |
| OEM Part | x |
Differential oil drain bolt
| Inner diameter | 18mm |
| Outer diameter | x |
| Metal | Aluminium |
| OEM Part | Honda #90401-PCZ-003 |
Differential oil filling bolt
| Inner diameter | 18mm |
| Outer diameter | x |
| Metal | Copper (Aluminium will also be fine) |
| OEM Part | Honda #90402-PCZ-003 |