Dorman 46078 PCV Valve Hose

Overview of Dorman PCV Valve Hose for Ford Escape and Mazda Tribute

The Dorman 46078 PCV valve hose is designed to maintain proper crankcase ventilation in select Ford and Mazda vehicles. This replacement hose ensures efficient emission control by connecting the PCV valve to the intake manifold, helping to reduce harmful engine emissions.

• Constructed from durable plastic and rubber materials for reliable performance
• Measures 19.75 inches in length for precise fitment
• Inside diameter of 0.34 inches with hose ends measuring 0.45 inches inside diameter
• Compatible with Ford Escape and Mazda Tribute models
• Includes one PCV valve hose per package

Detailed Product Description and Specifications

The Dorman 46078 PCV valve hose combines plastic and rubber components to provide flexibility and durability under engine bay conditions. With a length of 19.75 inches, this hose is engineered to fit the crankcase ventilation system of Ford Escape and Mazda Tribute vehicles accurately. The hose features an inside diameter of 0.34 inches, while both hose ends have an inside diameter of 0.45 inches, ensuring a secure connection to the PCV valve and intake manifold. This precise sizing helps maintain proper airflow and prevents leaks that could affect engine performance and emissions.

Applications and Common Issues Addressed

• Replacement for cracked or brittle PCV valve hoses in Ford Escape and Mazda Tribute
• Helps prevent vacuum leaks that can cause rough idling or engine hesitation
• Restores proper crankcase ventilation to reduce oil contamination and sludge buildup
• Supports emission control compliance by maintaining system integrity
• Addresses check engine light triggers related to PCV system faults

Installation Notes and Tips

When installing the Dorman 46078 PCV valve hose, ensure the engine is cool to avoid burns. Remove the old hose carefully to prevent damage to surrounding components. Verify that the hose ends fit snugly onto the PCV valve and intake manifold connections. It is recommended to inspect related components such as the PCV valve and grommets during installation to ensure the entire system functions correctly.

Quality Assurance and Warranty Information

Dorman manufactures the 46078 PCV valve hose to meet or exceed OEM specifications for fit, form, and function. The combination of plastic and rubber materials is selected for durability and resistance to engine heat and chemicals. This part is backed by Dorman's limited warranty, providing coverage against defects in material and workmanship under normal use.