Dorman 46034 PCV Valve Tubing

Dorman 46034 PCV Hose for Select Ford and Mazda

Dorman 46034 is a replacement PCV valve tubing hose built for crankcase ventilation service on select Ford, Mazda, and Mercury vehicles. It is made from quality materials to help resist cracking and brittleness, making it a practical choice when the original hose is worn, leaking, or deteriorated.

Compatible With 2003-2008 Mazda 6, inlet side; 2004-2009 Mazda 3; 2005-2006 Mazda Tribute, inlet side; 2005-2008 Ford Escape; 2005-2008 Mercury Mariner; 2006-2009 Ford Fusion; 2006-2009 Mazda 5, inlet side; 2006-2009 Mercury Milan; 2007-2011 Ford Focus; and 2008-2011 Mazda Tribute, inlet side.

• OE-style PCV hose replacement for crankcase ventilation repair
• Built from materials selected to resist cracking and brittleness
• Addresses leaking or damaged original equipment hose conditions
• Direct-fit application coverage for select Ford, Mazda, and Mercury models
• Part number 46034 for easy catalog matching

Detailed Product Overview

Proper crankcase ventilation helps maintain smooth engine operation and long-term engine health by routing vapors through the PCV system as intended. Dorman 46034 replaces the original PCV hose on supported applications, including the Mazda 3, Mazda 6, Ford Fusion, and Ford Escape, with fitment also covering select Mercury Milan and Mariner models. This hose is intended for the inlet side where specified in the fitment data and is a direct replacement for worn tubing that can cause vacuum leaks or ventilation issues.

This part cross-references OE numbers 3L8Z6758AA and L30513895 for the same application.

Common Problems This Part Can Address

• Cracked or brittle PCV hose material
• Vacuum leaks from a deteriorated crankcase ventilation line
• Oil vapor routing issues caused by hose damage
• Rough idle or drivability concerns related to PCV system leaks
• Failed inspection due to visible hose deterioration

Installation Notes and Tips

Verify the vehicle year, make, model, and inlet-side application before installation. Inspect the surrounding PCV system for additional wear, hardened connectors, or oil contamination that could affect sealing. Confirm the hose routing matches the original layout on the vehicle, and replace any damaged adjacent components during service.

Quality Assurance

Dorman manufactures this PCV hose replacement using quality materials intended to provide dependable service in crankcase ventilation repair. Part number 46034 is engineered as a replacement for the original hose on listed applications.