Keep coolant moving cleanly to the engine with the Dorman - OE Solutions Engine Coolant Pipe 902-5423. This direct-fit replacement drops into the 2004-2007 Volkswagen Touareg (see the Buyer's Guide tab for engine-level fitment), taking the place of an original pipe that has failed from heat or corrosion. Dorman also catalogs this part under the description Engine Coolant Thermostat Housing Assembly, so it may appear under both names.
Direct replacement: built to match the original pipe's fit and function on the listed applications, so it installs without modification.
Leak-free transfer: engineered to help carry coolant without seepage when the original pipe has failed from heat or corrosion.
Durable construction: designed and manufactured to strict specifications for reliable performance.
Trustworthy quality: backed by a team of product experts in the United States and more than a century of automotive experience.
A coolant pipe routes coolant between the cooling-system components; over time heat cycling and corrosion can crack or perforate the original, showing up as coolant weeping, drips, or low coolant level. If a failed coolant pipe is the cause, this replaces it.
Interchange: CH3423 · 022121050A
This part cross-references / interchanges with the following part numbers:
CH3423, 022121050A
Frequently Asked Questions
What vehicles does this coolant pipe fit?
It is a direct-fit replacement for the 2004-2007 Volkswagen Touareg. Check the Buyer's Guide tab to confirm engine-level fitment for your vehicle.
What does an engine coolant pipe do?
It routes coolant between the cooling-system components, providing a sealed passage for coolant flow through the engine.
What are signs the original pipe needs replacing?
Coolant weeping, drips, or a dropping coolant level can indicate a pipe cracked or perforated by heat or corrosion. Diagnose the source before replacing.
Why is this also called a thermostat housing assembly?
Dorman catalogs the part number 902-5423 both as an engine coolant pipe and as an Engine Coolant Thermostat Housing Assembly, so you may see it listed under either name.
What interchange numbers does this part replace?
It cross-references CH3423 and 022121050A. Match your original part number to confirm the correct replacement.
Engine Coolant PipeThis replacement engine coolant water outlet is engineered to match the fit and durability of the stock engine coolant water outlet on specified vehicles. It is designed to...
Engine Coolant PipeThis engine coolant pipe is designed to match the fit and function of the original pipe on specified vehicles. It is engineered to help ensure leak-free coolant transfer when an...
Engine Coolant Thermostat Housing AssemblyThis engine coolant pipe is designed to match the fit and function of the original pipe on specified vehicles. It is engineered to help ensure leak-free...
Engine Coolant PipeThis engine coolant pipe is designed to match the fit and function of the original pipe on specified vehicles. It is engineered to help ensure leak-free coolant transfer when an...
Engine Coolant PipeThis engine coolant pipe is designed to match the fit and function of the original pipe on specified vehicles. It is engineered to help ensure leak-free coolant transfer when an...
WARNING:
These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to
www.P65Warnings.ca.gov.
