Thermostat Housing 03H121117A 03H121117B | Fits VW Touareg Atlas Audi Q7 | VW Partly

RESTORE PROPER COMPONENT FITMENT

A worn, damaged, leaking, or deteriorated thermostat housing can affect coolant flow and system sealing and cause repair concerns in compatible Volkswagen Group vehicles.

This OE-reference replacement helps restore coolant flow and system sealing. It is designed for direct-fit installation and manufactured according to OE specifications for professional repair and maintenance.

FEATURES

• OEM-style aftermarket replacement

• Direct-fit installation

• Manufactured to OE specifications

• Durable wear-resistant construction

• Restores proper coolant flow and system sealing

• Helps prevent coolant leaks

• Suitable for professional repair and maintenance

OEM REFERENCE

• 03H121117A

• 03H121117B

COMPATIBLE VEHICLES

VOLKSWAGEN

• Touareg

• Atlas

AUDI

• Q7

Please verify compatibility using VIN number, engine code, or OEM part number before purchase.

COMMON SYMPTOMS

• Coolant leakage near the pipe connection

• Low coolant level warning

• Overheating caused by confirmed coolant loss

• Visible cracks or aging on coolant pipe

• Coolant odor from engine bay

WHY REPLACE THIS PART?

Replacing a worn or damaged thermostat housing helps restore proper operation, maintain correct fitment, and reduce the risk of repeated repair caused by aged or failed components.

FITMENT / INSTALLATION NOTE

Professional installation is recommended. Confirm fitment using the complete OE number, VIN, vehicle application, and removed-part design before ordering or installation.