Spare parts for the Grohe 20404001 Costa L 1/2 inch basin tap, a deck-mounted XS size pillar tap with a chrome finish. This page covers the principal service components currently available for maintaining the headwork, sealing and outlet functions of the tap.
The tap uses a GROHE Long-Life 1/2 inch headpart to control the water flow, together with dedicated sealing components and a mousseur at the spout outlet. For routine servicing, the Grohe spares listed below cover the main replaceable components currently available for this model.
| Brand | GROHE |
|---|---|
| Range | Costa L |
| Category | Basin tap / pillar tap |
| Product code | 20404001 |
| Size | XS |
| Finish | Chrome |
| Connection | G 1/2 |
| Headpart | GROHE Long-Life 1/2 inch headpart |
| Handle | Metal, heat insulated and screwable, with blue marking |
| Spout | Cast spout with mousseur |
| Overall height above mounting surface | 93 mm |
| Spout reach to outlet centreline | 80 mm |
| Outlet height above mounting surface | 39 mm |
| Base diameter | 50 mm |
| Maximum mounting-surface thickness | 25 mm |
| Outlet angle | 20 degrees |
| EAN | 4005176842986 |
Check that the tap model is 20404001 and identify which component requires servicing before ordering. Poor shut-off or difficult flow control can indicate wear within the headwork or its seals, while reduced or uneven flow from the spout can indicate limescale or restriction at the mousseur.