Rein 1J0-121-156 AT Heater Core Hose Assembly with Quick Couplers

The Rein 1J0-121-156 AT Heater Hose Assembly is an OE-quality replacement component designed to restore reliable coolant flow between your vehicle's heater core, water flange, and water pipe. Engineered to meet original equipment standards, this complete hose assembly provides a direct-fit solution for European vehicles requiring precise coolant system connections.

Key Features:

• Complete Assembly: Four-way heater hose configuration with integrated quick coupling pieces and bracket attachment hardware
• Factory-Quality Construction: Made from reinforced rubber compound designed to withstand extreme temperatures, road salt, oil, and other contaminants
• Pre-Assembled Quick Couplers: Includes new O-rings and quick-connect fittings to prevent leaks and eliminate the need to reuse worn components
• Direct OE Replacement: Correct diameter, bends, and lengths match original specifications for hassle-free installation
• Heat Shield Included: Protective shielding guards against excessive heat exposure for extended service life
• No Modifications Required: Bolt-on installation with no cutting, refitting, or adjusting necessary

This heater hose assembly connects directly to the heater core outlets on the firewall and replaces OEM part number 1J0 121 156 AT. Rein Automotive has specialized in high-quality cooling system components since 2007, offering professional-grade replacement parts trusted by mechanics and automotive enthusiasts. The assembly features three branches and two quick-connect fittings with a centerline length of approximately 27 inches. Cross-reference numbers include CHH0147R and 1J0121156AN.

When coolant hoses fail due to age, heat exposure, or wear—through splitting, swelling, cracking, or breaking—replacing them promptly prevents overheating and potential engine damage. This complete Rein assembly eliminates the risk of coolant leaks and comebacks by providing all necessary components in one package.