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 |
The Meyle 8E0 121 403 Coolant Tank is a direct-fit OEM-style expansion tank engineered for Audi A4 B6 and B7 platform models. Furthermore, it manages thermal expansion, maintains correct system pressure, and serves as the primary coolant fill point — with an integrated level sensor included for a complete, plug-and-play installation.
The 06K 903 133AF is an OE-spec accessory drive belt tensioner assembly for select Volkswagen and Audi 2.0T applications. Engineered to factory specifications, this direct-fit replacement restores correct belt tension across all accessory drive components — 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 Graf 06A 121 012G is an OE-quality timing-belt-driven water pump for select Volkswagen and Audi 1.8T and 2.0 engines. Built for direct installation with no modifications required.
The Graf VW Water Pump 026 121 005H is an OE-quality belt-driven replacement for select Volkswagen and Audi 4-cylinder engines. Built for direct installation with no modifications required.
