The 1J0 122 291B coolant hose connector is an OE-style direct-fit replacement for select Volkswagen and Audi applications, including Golf IV, Jetta IV, New Beetle, and Audi A3. Engineered for a secure, leak-free fit in the heater hose and expansion tank circuit.
$20.00
The 1J0 122 291B coolant hose connector is an OE-style replacement fitting used on select Volkswagen and Audi applications. This quick-coupling connector serves as a secure junction in the engine cooling circuit, linking the heater core hose and expansion tank hose to maintain proper coolant flow and system pressure for stable operating temperatures.
As these plastic connectors age, repeated heat cycles and coolant exposure cause the material to become brittle. Cracking, warped sealing surfaces, or weakened hose connections lead to coolant seepage, low-coolant warnings, and potential overheating. Replacing the failed connector with a new 1J0 122 291B restores a leak-free connection and reliable coolant circulation.
A failing coolant hose connector often shows visible seepage or dried coolant residue at the connector body or hose ends. A persistent coolant odor after driving, unexplained drops in the expansion tank level, or a low-coolant warning light are further indicators. Physical inspection may reveal hairline cracks in the plastic housing or a connector that no longer grips the attached hoses firmly. Sudden coolant loss from a fully failed connector can cause rapid engine overheating. Replacing the connector at first signs of failure helps prevent more extensive cooling system damage.
OEM Reference: 1J0 122 291B
OE-style construction for proper fit and hose alignment
Quick-coupling design for the heater hose and expansion tank hose circuit
Heat- and coolant-resistant composite/plastic construction
Designed for a secure, leak-free hose connection under system pressure
Direct-fit replacement; no modifications required
Replace any related O-rings, seals, and hose clamps during installation for best results. After installation, refill with the correct VW/Audi-approved coolant and properly bleed the cooling system to remove trapped air. Inspect nearby hoses and plastic fittings; replacing aging components together helps prevent repeat leaks.
Always verify fitment by VIN before ordering.
| Weight | 0.25 lbs |
|---|---|
| Dimensions | 5.0 × 4.0 × 3.0 in |
| Year | Make | Model | Engine | Notes |
|---|---|---|---|---|
| 2004-2006 | Volkswagen | Beetle | 1.9L | |
| 2006-2008 | Volkswagen | Beetle | 2.5L | |
| 2006-2019 | Volkswagen | GTI | 2.0L | |
| 1999-2006, 2010-2015 | Volkswagen | Golf | 2.0L | |
| 2012, 2015-2019 | Volkswagen | Golf R | 2.0L | |
| 2015 | Volkswagen | Golf SportWagen | 2.0L | |
| 1999-2006 | Volkswagen | Jetta | 2.0L |
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