Rein CHH0700 HVAC Heater Hose - Heater To Reservoir

OE Heater Hose for BMW Cooling System Service

Rein CHH0700 is an OE-quality heater hose built for European vehicle cooling system repairs. It is a direct replacement for the original heater hose and hose assembly, with the correct branch shape and thermoplastic quick-connect fittings for a clean, factory-style repair on BMW applications.

Compatible with select BMW 1 Series, 3 Series, and X1 models, this heater hose is designed for the heater-to-reservoir routing used on the listed vehicles. Rein CHH0700 helps restore proper coolant flow while reducing the time needed for installation.

Key Features

• Direct-fit replacement for the OE heater hose assembly
• Reduces installation time by matching the original routing and connection style
• No cutting, refitting, or adjusting the hose during installation
• Helps prevent leaks and repeat repairs from reusing old quick connectors and O-rings
• Built to resist heat, salt, road debris, oil, and other contaminants
• OE-style thermoplastic quick-connect fittings for factory-like fitment

Detailed Description

Rein Automotive CHH0700 is engineered as a complete OE-quality direct-fit heater hose for European vehicles. The hose mirrors the original design, including branch dimensions and connector style, so it installs like the factory part and maintains the intended coolant routing. For BMW 128i, 135i, 328i, 335i, and related models, CHH0700 supports a precise heater-to-reservoir connection without the need to modify the hose.

This part cross-references BMW OE part number 64216951946 for the same application.

What It Helps Fix

• Coolant seepage at worn heater hose connections
• Cracked or heat-aged hose material
• Broken or weakened quick-connect fittings
• Repeat leaks caused by reusing old O-rings
• Poor fitment from universal hose repairs

Installation Notes and Tips

Fits 2006-2011 BMW 323i, heater to reservoir; 2006 BMW 325i, heater to reservoir; 2006 BMW 325xi, heater to reservoir; 2006 BMW 330i, heater to reservoir; 2006 BMW 330xi, heater to reservoir; 2007-2013 BMW 328i, heater to reservoir; 2007-2008 BMW 328xi, heater to reservoir; 2007-2013 BMW 335i, heater to reservoir; 2007-2008 BMW 335xi, heater to reservoir, w/o Servotronic Hyd. Stg.; 2008-2013 BMW 128i, heater to reservoir; 2008-2013 BMW 135i, heater to reservoir; 2009-2013 BMW 328i xDrive, heater to reservoir; 2009-2010 BMW 335i xDrive, heater to reservoir; 2011-2013 BMW 335i, heater to reservoir, w/o Servotronic Hyd. Stg.; 2011-2013 BMW 335i xDrive, heater to reservoir, w/o Servotronic Hyd. Stg.; 2011-2013 BMW 335is, heater to reservoir; 2011 BMW 1 Series M, heater to reservoir; 2013 BMW 135is, heater to reservoir; 2013-2015 BMW X1, heater to reservoir, w/o Servotronic Hyd. Stg.

Confirm the vehicle’s engine and steering configuration before ordering, especially on applications noted without Servotronic hydraulic steering. Inspect mating surfaces and replace worn seals or connectors as needed to complete the repair correctly.

Quality Assurance

Rein Automotive focuses on OE-style replacement parts for European vehicles, with fit and connector design matched to the original hose assembly. CHH0700 is backed by a 24-month or 24,000-mile warranty.