Gates EMH121 Engine Crankcase Breather Hose - Intake To Tube

Overview of Gates Emission Control Hose EMH121

The Gates Emission Control Hose EMH121 is designed specifically for BMW vehicles including the 323Ci, 323i, 328Ci, 328i, 328is, 528i, and Z3 models. This engine crankcase breather hose ensures proper ventilation within the crankcase ventilation system, helping maintain engine performance and emission standards.

• Constructed from durable plastic and rubber materials
• Inside diameters of 7 mm (.281 in) and 8 mm (.3 in) for precise fitment
• Centerline length of 445 mm (17.5 in) for accurate replacement
• Clip-on and push-in end types for secure installation
• Includes a protective sleeve for added durability
• Single hose quantity with one quick connector
• Molded design for consistent quality and fit

About the Gates Emission Control Hose Product Line

The Gates Emission Control Hose line focuses on components that support the crankcase ventilation system, critical for controlling engine emissions and maintaining air quality standards. The EMH121 is part of this line, engineered to meet OEM specifications for BMW models, ensuring reliable performance and compatibility within the emission control system.

Detailed Product Description

The EMH121 engine crankcase breather hose is molded from a combination of plastic and rubber, providing flexibility and resistance to heat and chemical exposure common in engine compartments. With inside diameters of 7 mm and 8 mm, this hose fits precisely onto the corresponding ports of the crankcase ventilation system. The 17.5-inch centerline length (445 mm) matches OEM dimensions, ensuring a proper seal and preventing leaks. The hose features a clip-on end and a push-in end, facilitating straightforward installation without additional hardware. A protective sleeve is included to guard against abrasion and extend service life.

Common Applications and Issues Addressed

• Replacement of cracked or brittle crankcase breather hoses in BMW 3 Series and 5 Series models
• Resolving vacuum leaks that cause rough idling or engine performance issues
• Preventing oil vapor leaks that can trigger emission system warnings
• Maintaining proper crankcase ventilation to reduce engine sludge buildup
• Ensuring compliance with emission control regulations by restoring system integrity

Installation Notes and Tips

• Verify hose dimensions and end types before installation to ensure compatibility
• Use the clip-on and push-in ends to secure the hose without additional clamps
• Inspect the protective sleeve for damage and position it correctly to prevent abrasion
• Replace any worn or damaged hardware if applicable, although none is included with this part
• Consult the vehicle’s service manual for specific crankcase ventilation system procedures

Quality Assurance and Warranty

The Gates Emission Control Hose EMH121 is manufactured to meet strict quality standards, including precise molding and material selection to withstand engine environment stresses. While hardware is not included, the hose is designed for durability and reliable performance in BMW 323Ci, 323i, 328Ci, 328i, 328is, 528i, and Z3 models. Gates provides a limited warranty against defects in material and workmanship, supporting long-term use within the emission control system.