Coolant Hose Flange – 07K 121 133E (OE)

Description

Product Reference

The 07K121133E Coolant Hose Flange is an OE‑style replacement used on select Volkswagen and Audi applications (commonly associated with VW 2.5L 5‑cylinder setups depending on model year and chassis). This molded coolant line is designed to route engine coolant between critical cooling system components—such as the engine outlet, thermostat/water pump area, radiator, and/or heater circuit—helping maintain proper coolant circulation and stable engine operating temperature.

Over time, coolant hoses and plastic/composite coolant pipes can weaken from repeated heat cycles, pressure, and coolant exposure. Cracks, swelling, or leaks at connection points can lead to coolant loss, low‑coolant warnings, poor heater performance, or overheating. Replacing the worn line with a new 07K121133E restores correct coolant routing and helps keep the cooling system leak‑free.

• OEM reference: 07K 121 133E
• OE‑style molded hose/pipe for correct routing and clearance
• Heat‑ and pressure‑resistant materials for long service life
• Designed to match factory connections and mounting points
• Helps prevent coolant leaks and maintain stable engine temperature
• Direct‑fit replacement; no modifications required

Applications

Used on select VW/Audi models that specify coolant hose/cooling pipe part number 07K121133E.

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

Service Notes

• Replace any associated O‑rings/seals and hose clamps during installation to ensure a long‑lasting seal.
• Refill with the correct VW/Audi‑approved coolant and properly bleed the cooling system after service.
• Inspect nearby plastic coolant fittings and hoses; replacing aging components together can prevent repeat leaks.

Cross Reference

• 07K 121 132G
• 07K 121 132F
• 07K 121 133D

Additional information

No fitment data available.