Rein EPT0188 Engine Coolant Reservoir - Radiator

OE Quality Expansion Tank for Porsche and Volkswagen

Rein EPT0188 is an OE-quality engine coolant reservoir built for select Porsche Cayenne and Volkswagen Touareg applications. It is made from virgin plastic to help maintain durability through repeated heat cycles and reduce the risk of cracking that can lead to coolant loss.

Fits 2011-2018 Porsche Cayenne, radiator. Fits 2011-2017 Volkswagen Touareg, N/A. This Rein expansion tank is engineered for direct fitment and consistent material tolerances, making it a practical replacement for a worn or damaged coolant reservoir.

Key Features

• Virgin plastic construction meeting or exceeding OE material specifications
• Resists cracking and wear caused by engine heat cycles
• Direct-fit design for straightforward replacement
• Built to strict engineering standards for material quality and tolerances
• OE-quality replacement for cooling system service

Detailed Product Overview

The Rein EPT0188 expansion tank is designed as a replacement coolant reservoir for the Porsche Cayenne and Volkswagen Touareg. Rein manufactures these tanks to match OE fit, form, and function, using virgin plastic rather than regrind material to improve durability and service life. For drivers searching for a Porsche Cayenne coolant reservoir or Volkswagen Touareg expansion tank, this part provides a direct replacement solution for the cooling system.

This part cross-references 7P0121407 and 95810615102 for the same application.

Common Cooling System Issues It Can Address

• Visible cracks in the coolant reservoir
• Coolant loss from heat-cycle damage
• Low coolant warnings caused by reservoir leakage
• Degraded plastic from age and engine bay temperatures
• Replacement needs after reservoir housing wear or failure

Installation Notes and Tips

Verify the vehicle application by year, make, model, and position before installation. Inspect connected hoses, caps, and mounting points for wear or damage during replacement. Confirm the cooling system is properly filled and bled after installation to help maintain normal operating temperature.

Quality Assurance

Rein OE-quality expansion tanks are manufactured to strict material and dimensional standards. The use of virgin plastic and OE-focused engineering supports long service life and consistent fitment for cooling system repair.