KATO 10-2020 ships with KATO tight-lock couplers. No replacement part is officially listed for this product.
| Maker | KATO |
|---|---|
| Product No. | 10-2020 |
| Name | Seibu 40000 Series add-on set A (4 cars) |
| Name (Japanese) | 西武鉄道 40000系 増結セットA(4両) |
| Type | Set |
| Category | EMU |
| Release | 2025-04 |
| JAN | 4949727696546 |
| Standard coupler | KATO tight-lock |
| Coupler notes | KATO tight-lock coupler (hookless, body-mounted); dummy couplers on cab ends |
| Evidence | Not stated |
| Source | Official product page |
| Last checked | 2026-10-28 |
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