Details
- Operating Mode
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- Supplementary Article/Info 2
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Compare 16 brands — check fitment and order online
OE part number 078121601B is a Auxiliary Water Pump (cooling water circuit) compatible with AUDI, AUDI (FAW) and other makes. Available from 16 brands, priced from £36.99. Every cross-reference listed below matches the same OE specification used by the vehicle manufacturer.
Auxiliary Water Pump (cooling water circuit) OE 078121601B prices range from £36.99 to £115.99, with 16 brands offering compatible parts.
Original installation position for OE 078121601B. The red ring marks where this part installs on the vehicle.

OEM workshop diagram — sourced from manufacturer parts catalogue.
OE 078121601B is compatible with the following make/model combinations:
| Make | Models |
|---|---|
| AUDI | A6 C5 (4B2, 4B4), A6 C5 Avant (4B5, 4B6), A4 B5 (8D2), A4 B5 Avant (8D5) +1 |
| VW | PASSAT B5.5 (3B3), PASSAT B5.5 Variant (3B6), PASSAT B5 Variant (3B5), PASSAT B5 (3B2) |
| SKODA | SUPERB I (3U4) |
Choose a brand to see their compatible parts for OE 078121601B.
Products matched to OE number 078121601B.
| Attribute | Value |
|---|---|
| Pressure [bar] | 0,1 |
| Current Strength [A] | 1,9 |
| Diameter [mm] | 18 |
| for OE number | 210100113R |
| for OE number | 5Q0 121 599 AA |
| for OE number | 5Q0 965 561 B |
| Length [mm] | 13 |
| Length [mm] | 170 |
| Length [mm] | 95 |
| Number of pins (connector 1) | 2 |
Common original equipment numbers linked to stocked alternatives.
OE (Original Equipment) number 078121601B is a manufacturer's reference code for Auxiliary Water Pump (cooling water circuit) used to identify the exact specification of a part fitted during vehicle production. By cross-referencing this OE number, you can find 16 compatible aftermarket brands that match the same specification — often at a lower price than the original. All parts listed above are verified to match OE 078121601B.