Overview

Upgrade the cooling system on your Volkswagen or Audi with this complete aluminum coolant flange kit. Designed as a durable replacement for the factory plastic flanges that become brittle and crack over time, this cast aluminum set helps you eliminate recurring coolant leaks and overheating issues for good.

This kit is built for the 1.8T engine found in the VW Golf MK4, Jetta, GTI and Audi TT, and it includes the key flange and housing components needed for a full refresh. The cast aluminum construction resists heat and pressure far better than the original plastic parts, making it a smart long-term fix for a common failure point.

Key Features

• Material: Cast Aluminum
• Special Features: Aluminum Coolant Flange Upgrade Kit
• Placement on Vehicle: In
• Manufacturer Part Number: 06A121133J, 06A121121F, 1J0121087C
• Interchange Part Number: 1J0121087E, 3B0122291B
• Other Part Number: 1J0121087E, 3B0122291B
• Country/Region of Manufacture: China
• Model Number: C58234

Highlights

• ✓ Replaces failure-prone plastic flanges with strong cast aluminum
• ✓ Helps stop coolant leaks and overheating caused by cracked housings
• ✓ Direct-fit upgrade for 1.8T VW and Audi applications
• ✓ Complete kit with the key flange and housing components
• ✓ Built to handle high engine bay temperatures and pressure

Usage

Ideal for DIY mechanics and shops servicing the 1.8T engine. Fits Volkswagen Golf MK4, Jetta, GTI (2000-2005) and Audi TT (2000-2002). Use this kit when replacing a leaking or cracked coolant flange, or as preventive maintenance on a high-mileage engine.

In the Box

• 6-piece aluminum coolant flange upgrade kit

Please Note

• Confirm your vehicle year, engine code and part numbers before ordering.