The 6Q0 122 291F is a Dorman OE-style lower radiator coolant hose flange for Volkswagen and Audi Mk4-platform models — including the Golf, Jetta, Beetle, Audi A3, TT, and TT Quattro across 1.8T, 2.0L, 1.9 TDI, and 2.8 VR6 applications (1998–2010). This precision-molded flange serves as the sealed junction for the lower coolant hose and features an integrated coolant drain port, making it a direct-fit replacement to restore leak-free cooling system operation with no modifications required.
$15.00
1 in stock
The 6Q0 122 291F Coolant Hose Flange is a Dorman OE-style lower radiator hose connector. It mounts in the lower coolant circuit on Mk4-based VW and Audi vehicles. Specifically, it provides the sealed junction between the lower radiator hose and the engine’s cooling circuit. Furthermore, this flange features an integrated drain port. That port gives technicians a direct service point to drain the cooling system. Because of it, you can drain coolant without disturbing additional hoses or clamps. As a result, system service becomes faster and cleaner. The 6Q0 122 291F supersedes the earlier VAG OE references 1J0 122 291A and 1J0 122 291D, making it the current fitment for these applications.
The 6Q0 122 291F mounts in the lower coolant circuit. Consequently, it endures constant hot coolant contact, sustained system pressure, and repeated thermal cycling. In particular, the lower hose position means coolant chemistry and pressure concentrate continuously at the hose barb and sealing surfaces. Over time, these stresses cause the plastic composite to become brittle. Hairline cracks then develop at the barb transitions and sealing face. Even a minor crack causes coolant seepage. As a result, low-coolant warnings appear and fluid levels drop without a visible external source. Therefore, replacing the 6Q0 122 291F promptly restores a tight, leak-free lower hose connection and returns the cooling system to proper operation.
Dorman is a leading OE-style replacement supplier with over a century of automotive experience. Moreover, their catalog specifically addresses Volkswagen and Audi applications across Mk4-era platforms. For the 6Q0 122 291F, Dorman engineers the flange to replicate the original VAG hose barb diameter, wall thickness, and drain port position. Additionally, Dorman selects plastic compounds rated for the thermal and chemical demands of a lower coolant hose environment. Therefore, the flange seals correctly with factory-style hose clamps and O-rings — without modification. Furthermore, Dorman backs the 627-002 with a limited lifetime warranty, providing long-term confidence for this repair.
Catching a failing 6Q0 122 291F early prevents coolant loss and protects the engine from heat damage. Therefore, watch for these warning signs:
Coolant weeping, staining, or dried mineral deposits around the lower hose connection or flange body
Persistent low coolant warnings that require repeated top-ups without a visible leak elsewhere
Sweet coolant odor from beneath the vehicle after engine warm-up
Visible cracking, crazing, or surface discoloration on the plastic flange body
Soft or poorly seating lower radiator hose at the flange barb
If any of these indicators appear, replace the flange promptly. Additionally, pressure-test the cooling system before returning the vehicle to service.
OEM Reference: 6Q0 122 291F (supersedes 1J0 122 291A / 1J0 122 291D)
Brand: Dorman — OE-style European replacement supplier; Dorman 627-002
OE-spec lower radiator hose flange for Mk4 VW/Audi applications
Integrated coolant drain port for efficient, mess-free system service
Precision-molded housing for correct hose barb fit and secure sealing
Compatible with factory-style hose clamps and O-rings
Direct-fit replacement — no modifications required
First, drain the cooling system through the integrated port before removing the flange; this prevents coolant spillage and contamination of nearby components
Next, inspect the lower radiator hose for softness, swelling, or surface cracking; replacing the hose and flange together avoids a return trip for the same symptom
Also, install new hose clamps — reusing old clamps on a new flange is a common cause of slow seepage after installation
Then, verify the drain port cap or plug is fully seated before refilling to prevent leaks at that fitting
Finally, refill with VW/Audi-approved coolant (G12+/G13 per your owner’s manual) and bleed the system fully to purge air pockets before returning the vehicle to service
Always verify fitment by VIN before ordering. Multiple variants may exist within the same model year.
6Q0 122 291F (VAG OEM — current)
1J0 122 291A / 1J0 122 291D (VAG OEM — superseded)
Dorman 627-002
Febi Bilstein 46154
VAICO V10-9752
| Weight | 0.25 lbs |
|---|---|
| Dimensions | 6.0 × 4.0 × 3.0 in |
| Year | Make | Model | Engine | Notes |
|---|---|---|---|---|
| 2000, 2006 | Audi | TT | 1.8T | |
| 1998, 2010 | Volkswagen | Beetle | 2.5L | |
| 2000, 2005 | Volkswagen | Beetle | 2.0T | |
| 2000, 2005 | Volkswagen | Beetle | 1.8T | |
| 2000, 2005 | Volkswagen | Beetle | 1.9T | |
| 2000, 2006 | Volkswagen | Golf IV | 1.8T | |
| 2000, 2006 | Volkswagen | Golf IV | 2.0T | |
| 2000, 2006 | Volkswagen | Jetta IV | 1.8T | |
| 2000, 2006 | Volkswagen | Jetta IV | 1.9T | |
| 2000, 2006 | Volkswagen | Jetta IV | 2.0T |
The 6Q0 122 291F is a Febi Bilstein OE-quality lower radiator coolant hose flange for Volkswagen and Audi Mk4-platform models — including the Golf, Jetta, Beetle, Audi A3, and TT across 1.8T, 2.0L, 1.9 TDI, and 2.8 VR6 applications (1998–2010). This precision-molded flange provides the sealed junction for the lower coolant hose and features an integrated coolant drain port, making it a direct-fit replacement to restore leak-free cooling system operation with no modifications required.
The 5Q0 122 291DA is the OE 3-port coolant hose connector located at the water pump on select Volkswagen and Audi MQB-platform vehicles. It serves as the central junction point between the coolant hoses routing to the radiator, heater circuit, and engine — covering a wide range of 1.8T and 2.0T turbocharged applications from Golf and GTI to Audi A3, TT, and Q3. This part is superseded by 5Q0 122 291AL, which is the current OE replacement. Always confirm fitment by VIN before ordering.
The 5Q0 122 291AC is the OE right-side coolant bypass line adapter (T-piece) used on select 2018–2023 Volkswagen and Audi MQB-platform vehicles equipped with a 2.0L engine and manual transmission. Positioned on the passenger side of the cooling circuit, it serves as the outlet adapter for the cooling system bypass line — a distinct application from the central water pump connectors used on the same platform. Always confirm fitment by VIN before ordering, as this part is transmission-specific.
The Service Tech ABS Speed Sensor WHT003860 is a cost-effective, OE-style replacement for select Volkswagen and Audi models. It delivers precise wheel-speed data to your ABS, ESP, and traction control systems with a plug-and-play installation and no modifications required.
The ATE ABS Speed Sensor WHT003859 is a premium OE-quality replacement for select Audi and Volkswagen models. It delivers precise wheel-speed data to your ABS, ESP, and traction control systems with a true plug-and-play installation.
