Rein CHH0416 HVAC Heater Hose - Heater Core Outlet To Tee

OE Heater Hose for BMW Cooling System Service

Rein CHH0416 is an OE-quality heater hose built for European vehicle cooling system repairs. It is a direct replacement for the original hose assembly, with the correct branch shape and thermoplastic quick-connect fittings for a clean, factory-style repair on BMW 535i, 535is, 635CSi, and M6 applications.

For technicians and DIY owners searching for a BMW heater hose replacement, CHH0416 helps restore proper coolant flow from the heater core outlet to the tee without cutting, refitting, or adjusting the hose.

Key Features

• Direct-fit heater hose for European applications
• OE-style branch geometry and quick-connect design
• EPDM hose construction with black finish
• Resists heat, salt, road debris, oil, and other contaminants
• Built to SAE J20R4 -D2 industry standards
• Reduces installation time by eliminating hose modification
• Helps prevent leaks caused by reusing old quick connectors and O-rings

Detailed Description

Rein CHH0416 is a complete OE quality direct-fit heater hose for BMW cooling and HVAC service. It measures 12.38 inches centerline length and uses application-specific end sizes to match the original routing and connection points. The hose is designed for the heater core outlet to tee position, making it a practical choice when replacing a worn or leaking BMW heater hose assembly.

This part cross-references BMW OE numbers 64211368715 and 64211373471 for the same application. It is a strong match for owners and repair shops looking for a BMW 535i heater hose, BMW 635CSi heater hose, or BMW M6 heater hose replacement that follows the original fit and connection style.

What It Helps Fix

• Coolant seepage at aging heater hose connections
• Cracked or hardened EPDM hose material
• Leaks from worn quick-connect fittings and O-rings
• Improper fit from modified or universal hoses
• Extended repair time caused by trimming or refitting

Installation Notes and Tips

Install CHH0416 as a direct replacement for the OE heater hose assembly on the listed BMW applications. Inspect mating connectors, seals, and adjacent coolant lines before installation, and replace damaged O-rings or connectors as needed to avoid repeat leaks. Confirm routing and connection points against the vehicle’s original layout before filling and bleeding the cooling system.

Quality Assurance

Rein positions this heater hose as an OE-quality replacement for European vehicles, with construction and fitment aligned to the original manufacturer’s design. It is backed by a 24-month or 24,000-mile warranty.

Compatible With: 1985-1989 BMW 635CSi, heater core outlet to tee; 1985-1988 BMW 535i, heater core outlet to tee; 1988 BMW 535is, heater core outlet to tee; 1987-1988 BMW M6, heater core outlet to tee.