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Rein CTA0021 Engine Coolant Thermostat Housing Assembly for Audi A4 1.8T (2002-2006)

Rein CTA0021 Engine Coolant Thermostat Housing Assembly for Audi A4 1.8T (2002-2006)

REIN AUTOMOTIVE
Availability:
Out of stock
SKU CTA0021
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$76.95 - $76.95
$76.95
$76.95 - $76.95
$76.95
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We show live inventory for in-stock items. Products may sell out due to high demand but are restocked regularly. Out-of-stock items can still be ordered and usually arrive within a few weeks.

The Rein Engine Coolant Thermostat Housing Assembly (CTA0021) is a high-quality replacement for Audi A4 models with 1.8L 4-cylinder engine from 2002 to 2006. Featuring an integrated thermostat, this assembly regulates coolant flow to maintain optimal engine temperature, preventing overheating and engine damage. Built to meet or exceed OEM specifications with premium materials for long-lasting durability.

Key Features & Benefits

  • Integrated Thermostat: Regulates coolant flow for precise temperature control.
  • Premium Materials: Resists corrosion and withstands extreme temperatures.
  • Direct Fit: Designed to OEM specifications for easy installation.
  • Prevents Overheating: Ensures consistent engine cooling performance.
  • Complete Assembly: Includes housing and thermostat for a one-piece replacement.

Vehicle Fitment

Make Model Years Engine
Audi A4 2002–2006 1.8L4
Audi A4 Quattro 2002–2005 1.8L4

Technical Specifications

Part Number CTA0021
Brand Rein
Application Audi A4 1.8L (2002-2006)
Material Premium composite with corrosion-resistant coating

Installation Notes

Direct bolt-on replacement; professional installation recommended.

About Rein

Rein is a trusted aftermarket brand known for producing cooling system components that meet or exceed OEM quality standards.

This part also goes by the following cross reference.

Cross Reference Part Number:

Fits These Vehicles 2 applications
B6 A4
Make Model Engine Years
Audi A4 1.8L4 2002–2006
Audi A4 Quattro 1.8L4 2002–2005
B7 A4
Make Model Engine Years
No vehicles listed for this group.

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