Gates 51554 HVAC Heater Hose - Breather Line

Gates 51554 Molded Coolant Hose Overview

Gates 51554 is a molded coolant hose assembly built for specific BMW applications with OE-style routing and integrated connection features. It is made from EPDM, plastic, and steel, and uses a molded design with one female quick connector for a precise fit in the breather line position.

The Gates Molded Coolant Hose line is engineered for application-specific replacement, with modular components that mirror original equipment layouts. For BMW 128i, 328i, 328i xDrive, 328xi, 325i, 325xi, 330i, and 330xi applications, this hose supports the factory-style hose path and connection style used in the cooling system.

Key Features

• Gates part number 51554
• Molded coolant hose for HVAC heater hose and breather line applications
• EPDM, plastic, and steel construction
• One female quick connector integrated into the hose assembly
• Centerline length: 889 mm (35 in.)
• End inside diameters: 8 mm (.3 in.) and 18 mm (.7 in.)
• Modular hose design with molded routing

Detailed Description

Gates 51554 is a molded coolant hose assembly designed to match specific BMW cooling-system routing requirements. The molded shape, integrated female quick connector, and OE-style modular construction help maintain the original hose path and connection interface. This part cross-references Genuine 17127618510 and Rein CHE0573 for the same application.

As part of the Gates Molded Coolant Hose line, this assembly reflects the brand’s focus on application-specific coolant hose replacements with integrated OE components where required. It is a direct-fit style solution for BMW 128i and BMW 328i family vehicles, as well as select 325i, 325xi, 330i, and 330xi models.

What This Hose Helps Address

• Cracked or deteriorated coolant hose material
• Loose or damaged quick-connector interface
• Incorrect hose routing after prior repairs
• Coolant seepage at the hose connection point
• Breather line hose replacement on listed BMW models

Installation Notes and Tips

Verify the existing hose routing, connector style, and end diameters before installation. Compare the original hose to Gates 51554 to confirm the molded shape and quick-connector location match the vehicle’s factory layout. This part is listed for Fits 2006 BMW 325i, Breather Line; Fits 2006 BMW 325xi, Breather Line; Fits 2006 BMW 330i, Breather Line; Fits 2006 BMW 330xi, Breather Line; Fits 2007-2008 BMW 328xi, Breather Line; Fits 2007-2013 BMW 328i, Breather Line; Fits 2008-2013 BMW 128i, Breather Line; Fits 2009-2013 BMW 328i xDrive, Breather Line.

Quality Assurance

Gates is an established automotive aftermarket brand known for application-specific coolant hose assemblies and OE-style modular components. Part number 51554 is built to follow the original equipment configuration for the listed BMW applications.