Stop the Leak. Keep Your TDI Running Right.

If your MK4 TDI is showing signs of a fuel smell, rough idle, or fuel weeping near the injection system, a cracked or brittle fuel return line is often the culprit. This is a common age-related failure on MK4 diesels — and it's an easy fix when you have the right part.

What You're Getting

• OEM-spec fuel return line for MK4 platform diesel engines
• Part number: 1J0201374K
• Direct replacement — no cutting, splicing, or adapters needed
• Designed to handle diesel fuel and the heat cycles of the TDI engine bay

Fits

• VW Golf MK4 TDI
• VW Jetta MK4 TDI
• VW Beetle TDI (confirm fitment by part number)

Why Replace It Now?

Fuel return lines on MK4 TDIs harden and crack with age. A failed line can cause fuel odour in the cabin, poor fuel economy, and in worst cases, a fire hazard. This is a straightforward DIY repair — typically under 30 minutes with basic hand tools.

Order today and get your TDI back to reliable daily driving.