The 06B 121 132E coolant flange by URO Parts is an OE-style direct-fit replacement for the Audi A4 B6 1.8T (2002–2006). Engineered to meet or exceed OEM specifications with the O-ring included for a complete, leak-free installation.
$9.00
The 06B 121 132E coolant flange by URO Parts is an OE-style replacement used on the Audi A4 B6 1.8T. This multi-port flange mounts to the cylinder head and provides secure connection points for coolant hoses along with a mounting location for the engine temperature sensor, ensuring proper coolant distribution and temperature monitoring for stable engine operation. URO Parts is an OE-style European replacement supplier producing components that meet or exceed original manufacturer specifications, and this flange includes the O-ring already in place for a complete, ready-to-install repair.
Due to constant exposure to high-pressure coolant and extreme heat cycles, the original plastic flange often becomes brittle and develops hairline cracks. This typically results in persistent coolant seepage at the rear of the cylinder head, dried coolant residue, low-coolant warnings, and potential engine overheating. Replacing the failing unit with the URO 06B 121 132E restores a factory-tight seal and reliable cooling system performance.
The most common indicator of a failing coolant flange on the Audi A4 1.8T is coolant seepage or dried residue found at the rear of the cylinder head near the flange body. A persistent coolant odor after driving, unexplained drops in the reservoir level, or an illuminated low-coolant warning light are additional signs. Physical inspection may reveal a visibly cracked or brittle plastic housing, particularly around the hose barbs or sensor bore. Left unaddressed, a failed flange can lead to rapid coolant loss and engine overheating. Replacing the flange promptly prevents heat-related engine damage.
OEM Reference: 06B 121 132E; supersedes 06B 121 132B
Brand: URO Parts — OE-style European replacement supplier
O-ring included and already in place for a complete, leak-free installation
Multi-port design for correct coolant distribution and sensor mounting
Heat- and coolant-resistant composite construction for long-term durability
Precision-molded connections ensure a secure, leak-free hose fitment
Direct-fit replacement; no modifications required to the factory cooling system
Replace the coolant temperature sensor O-ring and any associated flange seals during installation. Use new hose clamps to ensure a secure grip on existing coolant hoses. After installation, refill with the correct VW/Audi-approved coolant and properly bleed the air from the cooling system before returning the vehicle to service.
Always verify fitment by VIN before ordering.
06B 121 132E
06B 121 132B
| Weight | 0.45 lbs |
|---|---|
| Dimensions | 6.0 × 5.0 × 4.0 in |
| Year | Make | Model | Engine | Notes |
|---|---|---|---|---|
| 2002-2006 | Audi | A4 | 1.8L |
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