Coolant Flange – 06A 121 133D (VIKA)

Description

Product Description

The 06A121133D Coolant Flange is an OE‑style replacement component used on select Volkswagen and Audi applications (commonly associated with 1.8T and related 4‑cylinder engines, depending on model year). This coolant flange mounts to the engine and provides properly aligned connection points for multiple coolant hoses, helping distribute coolant between the engine, radiator, and heater circuit to maintain stable operating temperature.

Over time, constant heat cycling and cooling system pressure can cause the original plastic flange to become brittle, warp, or crack. Leaks often show up as coolant odor, wetness, or dried pink/orange residue around the flange and hose connections, leading to coolant loss, warning lights, and overheating risk. Replacing the worn unit with a new 06A121133D flange restores a tight seal and reliable coolant flow.

• OEM reference: 06A 121 133D
• OE‑style molded coolant flange for correct fit and hose alignment
• Heat‑ and coolant‑resistant composite construction
• Multi‑port design supports proper coolant routing and distribution
• Helps prevent coolant leaks and overheating
• Direct‑fit replacement; no modifications required

Applications

Used on select VW/Audi vehicles that specify coolant flange part number 06A121133D.

(Fitment varies by engine code and model year—confirm by VIN or parts catalog and match the port layout to your existing flange.)

Service Notes

• Replace the flange O‑ring/gasket and any related seals during installation for best results.
• Use new hose clamps if the originals are worn or corroded.
• Refill with VW/Audi‑approved coolant and properly bleed the cooling system after service.

Additional information