Compare 2 brands — check fitment and order online
OE part number 5N0121109C is a Radiator Hose compatible with AUDI, VW and other makes. Available from 2 brands, priced from £3.99. Every cross-reference listed below matches the same OE specification used by the vehicle manufacturer.
Radiator Hose OE 5N0121109C prices range from £3.99 to £38.99, with 2 brands offering compatible parts.
Original installation position for OE 5N0121109C. The red ring marks where this part installs on the vehicle.

OEM workshop diagram — sourced from manufacturer parts catalogue.
OE 5N0121109C is compatible with the following make/model combinations:
| Make | Models |
|---|---|
| AUDI | Q3 (8UB, 8UG) |
| VW | TIGUAN (5N) |
Choose a brand to see their compatible parts for OE 5N0121109C.
Products matched to OE number 5N0121109C.
| Attribute | Value |
|---|---|
| Inner Diameter 2 [mm] | 34 |
| Hose Length [mm] | 280 |
| Hose Length [mm] | 325 |
| Cooling Hose | from coolant regulator housing to water pipe |
| Inner Diameter 1 [mm] | 8 |
| Length [mm] | 650 |
| Weight [g] | 500 |
| Charge Type | 1 |
| Hose Length [mm] | 540 |
| Inner Diameter 1 [mm] | 10 |
Common original equipment numbers linked to stocked alternatives.
OE (Original Equipment) number 5N0121109C is a manufacturer's reference code for Radiator Hose used to identify the exact specification of a part fitted during vehicle production. By cross-referencing this OE number, you can find 2 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 5N0121109C.