Aluminum Coolant Hose Flange – 1K0 121 087E (Aluminum)

Description

Product Description

The 1K0121087E Aluminum Coolant Hose Flange Connector is an upgraded replacement for select Volkswagen and Audi applications where the original plastic/rubber assembly is prone to aging and leaks. This aluminum version is designed to provide a more durable, heat‑resistant connection in the cooling system, maintaining proper coolant flow between components such as the engine outlet, radiator circuit, and/or expansion/return line (depending on vehicle configuration).

Cooling system fittings see constant heat cycling and pressure. Factory plastic connectors can become brittle, crack, or warp at the sealing surface, often causing coolant seepage and low‑coolant warnings. Upgrading to an aluminum 1K0121087E fitting helps improve long‑term reliability, reduce repeat leaks, and maintain stable engine operating temperature.

• Reference: 1K0 121 087E
• Aluminum construction for improved durability vs. plastic versions
• Better resistance to heat cycling, pressure, and warping
• Precision-machined/molded connections for secure hose fitment
• Helps prevent coolant leaks and repeated cooling system failures
• Direct‑fit replacement when matched by application

Applications

Used on select Volkswagen/Audi models that specify or cross‑reference 1K0121087E.

(Fitment varies by engine code and model year—confirm by VIN and match the connection layout of your existing part.)

Service Notes

• Replace any associated O‑rings/seals and hose clamps during installation for a leak‑free repair.
• Refill with the correct VW/Audi‑approved coolant and properly bleed the cooling system after service.
• Inspect adjacent coolant hoses and plastic flanges; replacing aged components together can help prevent future leaks.

Additional information

No fitment data available.