Coolant Flange – 06A 121 121C (OE)

Description

Product Description

The 06A121121C Coolant Flange is an OE‑style replacement component used on select Volkswagen and Audi 1.8T and related 4‑cylinder engines. This flange mounts to the engine and provides a sealed outlet for coolant flow from the engine to the connected coolant hose, helping maintain proper circulation and stable operating temperature.

Over time, the original flange—especially plastic versions—can crack, warp, or leak due to constant heat cycling and cooling system pressure. A failing flange often causes coolant loss, low‑coolant warnings, or overheating. Replacing it with a new 06A121121C restores proper coolant routing and a leak‑free seal.

• OEM reference: 06A 121 121C
• OE‑style coolant flange for correct fit and alignment
• Designed to withstand engine heat and cooling system pressure
• Precision‑molded flange for secure mounting and reliable sealing
• Direct‑fit replacement; no modifications required

Applications

Used on select VW/Audi models that specify coolant flange part number 06A121121C (commonly found on various 1.8T engines).

(Fitment varies by engine code and model year—confirm by VIN or parts catalog.)

Service Notes

• Always replace the O‑ring/gasket when installing the pipe to ensure a leak‑free seal.
• Inspect the attached coolant hose for swelling or cracking and replace if necessary.
• Refill with VW/Audi‑approved coolant and properly bleed the cooling system after service.

Cross Reference

• 06A 121 121
• 06A 121 121 A
• 06A 121 121 B

Additional information