
$3.61
The 1J0121087A Coolant Hose Flange is an OE-style replacement fitting used on various Volkswagen and Audi models. This multi-way junction serves as a critical connection point in the engine cooling circuit, allowing for the branching of coolant flow between the radiator, expansion tank, and engine block. It ensures that coolant is distributed correctly to maintain stable operating temperatures throughout the system.
Over time, the original plastic connector is subjected to constant heat cycles, pressure, and vibration, which can cause the material to become brittle. This often leads to hairline cracks or complete failure at the hose barbs, resulting in sudden coolant loss, low-coolant warnings, and potential engine overheating. Replacing a weakened or leaking connector with this OE-quality 1J0121087A fitting restores a secure, leak-free junction and reliable cooling system performance.
Used on select Volkswagen and Audi models that specify coolant hose connector part number 1J0121087A.
(Fitment varies by engine code and model year; please confirm compatibility via VIN or parts catalog to ensure this matches your specific cooling system layout.)
| Weight | 0.25 lbs |
|---|---|
| Dimensions | 5.0 × 4.0 × 3.0 in |





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