Gates EMH139 Engine Crankcase Breather Hose - Valve Cover To Oil Separator

Overview of Gates Emission Control Hose EMH139

The Gates Emission Control Hose EMH139 is designed for precise crankcase ventilation in select BMW models. Engineered with durable plastic and clip-on ends, this engine crankcase breather hose ensures reliable emission control system performance.

• Material: High-quality plastic construction
• Inside Diameter: 0.64 inches (16 mm)
• Centerline Length: 11 inches (279 mm)
• End Type: Clip on both ends for secure fitment
• Protective sleeve included for added durability
• OE exact comparison rating for direct replacement
• Includes one hose with two quick connectors

About the Gates Emission Control Hose Product Line

The Gates Emission Control Hose line focuses on components that maintain proper crankcase ventilation and emission system integrity. This product line is engineered to meet or exceed original equipment specifications, providing reliable fit and function for emission control systems. The EMH139 hose is molded for precision and includes a protective sleeve to resist wear and environmental damage, supporting long-term engine performance.

Detailed Product Description

The EMH139 engine crankcase breather hose is molded from durable plastic, offering resistance to heat and chemical exposure common in engine compartments. With an inside diameter of 0.64 inches (16 mm) and a centerline length of 11 inches (279 mm), it is designed to fit specific BMW models including the 323Ci, 325i, 328i, 330i, 525i, X3, X5, Z3, and Z4. Both ends feature clip-on connectors for secure attachment without additional hardware. The included protective sleeve enhances hose longevity by shielding it from abrasion and external contaminants.

Common Applications and Issues Addressed

• Replacement of cracked or brittle crankcase breather hoses
• Restoring proper crankcase ventilation to reduce engine blow-by
• Preventing vacuum leaks that can cause rough idling or poor fuel economy
• Maintaining emission control system compliance on compatible BMW models
• Eliminating oil vapor leaks that may trigger check engine lights

Installation Notes and Tips

• Ensure engine is cool before removing old hose to avoid burns
• Check clip-on ends for secure fit to prevent vacuum leaks
• Inspect surrounding components for wear or damage during installation
• Use the protective sleeve to prevent abrasion from adjacent parts
• Verify hose routing matches OEM configuration for optimal performance

Quality Assurance and Warranty

The Gates Emission Control Hose EMH139 meets OE exact comparison standards, ensuring compatibility and performance equivalent to original parts. Manufactured with precision molding and quality materials, this hose is built to withstand typical engine compartment conditions. While specific warranty details are not provided, Gates products generally adhere to industry quality standards for emission control components.