Rein CTA0086 Engine Coolant Thermostat Housing Assembly

OE-Quality Thermostat Housing

The Rein CTA0086 engine coolant thermostat housing assembly is built for a precise, OE-style fit and consistent cooling system control. It is a standard replacement for select Volkswagen Passat applications and is calibrated to open at 87 degrees for dependable temperature regulation.

Key Features

• OE-quality thermostat housing assembly for direct-style replacement
• Temperature calibrated to begin opening at 87 degrees
• Constructed with high-quality metals and components for durability
• Includes a gasket or seal for proper sealing at installation
• Standard replacement grade for service and repair work

Detailed Description

Rein designs this thermostat housing assembly to install, fit, and perform in line with the original manufacturer’s intent. The CTA0086 is engineered with durable materials to support consistent coolant flow control and stable operating temperature. For Volkswagen Passat cooling system service, this part number CTA0086 provides an OE-quality replacement option that matches the needs of professional repair work.

Rein Automotive focuses on OE-quality replacement components that meet or exceed original material standards. That approach helps deliver predictable response, proper service life, and a straightforward installation experience. This part cross-references Genuine 03L121111Q for the same application.

What It Is Used For

• Replacing a thermostat housing assembly with sealing wear or age-related deterioration
• Restoring proper coolant temperature regulation
• Addressing inconsistent thermostat opening response
• Repairing leaks at the thermostat housing interface
• Servicing the cooling system on a Volkswagen Passat

Installation Notes and Tips

Confirm the vehicle application before installation. This thermostat housing assembly includes a gasket or seal, and the product attributes do not list mounting hardware. Follow the manufacturer’s service procedure for coolant draining, component transfer, and refill/bleed steps to complete the repair correctly.

Quality Assurance

Rein positions this thermostat assembly as an OE-quality replacement built to meet or exceed original material standards. The CTA0086 is temperature calibrated for consistent response, supporting reliable cooling system service on compatible Volkswagen Passat models.