Rein CHC0712 Engine Coolant Pipe - Oil Cooler To Thermostat

OE-Style Coolant Pipe Connector

The Rein CHC0712 is an OE-quality rubber engine coolant pipe connector for the oil cooler to thermostat circuit. It is built as a direct replacement for the original connector used on select Audi and Volkswagen applications, including Audi A4, A5, Q5, and Volkswagen GTI models.

Rein CHC0712 uses coolant-degradation-resistant rubber and is manufactured to strict engineering standards for material quality and dimensional accuracy. That helps restore proper hose connection integrity in a high-heat cooling system location.

Key Features

• Direct OE-style replacement hose rubber connector
• Rubber construction designed for durability and long service life
• Resists coolant degradation in demanding cooling system service
• Manufactured to strict specifications for fit and tolerance
• Addresses a common failure point at the hose connector
• Compatible with select Audi and Volkswagen oil cooler to thermostat applications

Detailed Description

Rein CHC0712 is an engine coolant pipe connector made for vehicles that route coolant between the oil cooler and thermostat. This part is designed to match OE form, fit, and function, making it a practical replacement when the original connector becomes brittle, leaks, or no longer seals correctly. It is a direct-fit solution for many turbocharged and non-turbocharged platform applications across Audi A3, A4, A5, A6, Q3, Q5, TT, and Volkswagen Beetle, CC, Eos, GTI, Jetta, Passat, Tiguan, and Tiguan Limited models.

This part cross-references Genuine 06H121131C and 06H121131B for the same application. The CHC0712 part number is commonly searched by buyers looking for an OE-quality coolant hose connector for Audi A4 coolant pipe repair, Volkswagen GTI oil cooler to thermostat hose replacement, or Audi Q5 cooling system service.

What It Helps Address

• Coolant seepage at a cracked or hardened connector
• Loss of sealing at the oil cooler to thermostat hose junction
• Cooling system leaks caused by rubber deterioration
• Fitment issues from worn or distorted OE connector material
• Service replacement for a damaged coolant pipe connector

Installation Notes and Tips

Verify the vehicle’s engine code and cooling system routing before ordering, since this connector is application-specific. Inspect adjoining hoses, clamps, and sealing surfaces for wear before installation so the new connector can seat properly. After installation, refill and bleed the cooling system according to factory service procedures and check for leaks at operating temperature.

Quality Assurance

Rein manufactures this connector as an OE-quality replacement using high-quality rubber construction and controlled tolerances. The part is backed by a 24-month or 24,000-mile warranty.