URO 6Q0121407B Engine Coolant Reservoir

Engine Coolant Reservoir Overview

This URO engine coolant reservoir is built for direct-fit replacement in supported applications. It uses OE-molded dimensions, a pressurized design, and an integrated level sensor to match the original cooling system layout.

Fits Volkswagen Polo, Audi A1, Volkswagen CrossFox, and select Ford E-Series applications listed below. Part number 6Q0121407B is referenced for multiple OE-style cooling system replacements.

Key Features

• Plastic reservoir construction for cooling system service
• Precision-molded to OE dimensions for sensor and connection compatibility
• Pressurized design for the cooling system
• Level sensor included
• Factory pressure-tested for fit and function verification
• 24-month unlimited mileage warranty

Detailed Description

URO 6Q0121407B is an engine coolant reservoir engineered to match original equipment dimensions and connection points in supported vehicles. The molded plastic construction is made to withstand engine heat and the demanding environment of the cooling system, while the pressurized design and included level sensor support proper reservoir function. This part number, 6Q0121407B, is used across multiple Volkswagen, Audi, and Ford applications where the original reservoir configuration matches the listed fitment.

This part cross-references Monroe Shocks & Struts (e.g., 603-640, V10-0558) for the same application.

What It Helps Fix

• Cracked or leaking coolant reservoir housing
• Faulty coolant level monitoring from a damaged tank
• Pressure loss in the cooling system reservoir
• Fitment issues caused by an incorrect replacement tank
• Heat-related deterioration of the original plastic reservoir

Installation Notes and Tips

Verify the reservoir shape, sensor connection, and pressure-cap configuration against the original part before installation. Fitment includes Volkswagen Polo, Audi A1, Volkswagen CrossFox, and select Ford E-Series models with the listed notes, including applications without cruise control and specific bore or brake-booster requirements. Part number 6Q0121407B should be matched to the vehicle’s original cooling system layout for proper installation.

Quality Assurance

URO states this reservoir is guaranteed for fitment, factory pressure-tested, and backed by a 24-month unlimited mileage warranty.