T5 Metal Water Pipe (Across The Top Of The Engine) - 2.5 TDI (AXE,AXD)

This metal water pipe is a direct-fit replacement for the upper coolant circuit on VW T5 Transporters fitted with the 2.5 TDI AXE and AXD engines. Located at the top of the engine, this pipe forms part of the main coolant distribution system, carrying hot coolant from the cylinder head toward the thermostat housing and radiator return paths. A healthy and leak-free top water pipe is essential for maintaining stable engine temperatures and preventing overheating—especially on the 2.5 TDI engines, where the cooling system runs at higher pressure than smaller diesel units.

Constructed from durable corrosion-resistant metal, this replacement pipe is far stronger and longer-lasting than many ageing factory units, which commonly suffer from rust, pinhole leaks or weakened joints over time. The bends, mounting tabs and outlet positions are manufactured to OE specification, ensuring perfect alignment with the thermostat housing, rubber coolant hoses and existing fixing points.

This pipe installs directly in place of the original with no modifications required. We recommend fitting new sealing O-rings where the pipe enters the housing and checking the condition of all adjoining coolant hoses at the same time. Replacing this pipe is particularly worthwhile during cooling system overhauls, water pump changes or when diagnosing intermittent coolant loss.

Suitable for:
• VW T5 2.5 TDI AXE – 2003-2010
• VW T5 2.5 TDI AXD – 2003-2010

A reliable, high-quality replacement to keep your 2.5 TDI running cool and dependable.