Dorman 46078 PCV Valve Hose

Dorman 46078 PCV Hose for Ford Escape and Mazda Tribute

This Dorman PCV valve hose restores crankcase ventilation routing on select 2001-2004 Ford Escape and 2001-2004 Mazda Tribute models. Built from plastic and rubber materials, Dorman 46078 is made to replace a worn, cracked, or leaking original hose and help maintain smooth engine operation.

Key Features

• Direct replacement PCV valve hose for crankcase ventilation service
• Constructed from plastic and rubber for resistance to cracking and brittleness
• 19.75 in. overall length
• 0.34 in. inside diameter with 0.45 in. hose end inside diameter
• Fits 2001-2004 Ford Escape, to PCV valve
• Fits 2001-2004 Mazda Tribute, to PCV valve

Detailed Description

Proper crankcase ventilation helps support stable idle quality, cleaner engine operation, and long-term engine durability. Dorman 46078 is a replacement PCV hose engineered for the Ford Escape and Mazda Tribute applications listed above, with dimensions that match the original routing to the PCV valve. If the original hose has hardened, split, or started leaking, this replacement hose provides a straightforward service part for restoring the ventilation path. This part cross-references Ford OE number YL8Z6C658A for the same application.

Common Problems This Part Can Address

• Cracked or brittle PCV hose material
• Vacuum leaks caused by a leaking hose connection
• Rough idle related to crankcase ventilation loss
• Oil vapor routing issues from a damaged hose
• Check engine concerns tied to ventilation system leaks

Installation Notes and Tips

Verify hose routing before removal so the replacement follows the original path to the PCV valve. Inspect the mating ports and nearby vacuum lines for wear, oil saturation, or damage before installation. Confirm the hose end diameters and overall length match the vehicle’s original setup for proper fitment on the Ford Escape or Mazda Tribute.

Quality Assurance

Dorman replacement parts are built to meet the needs of routine emission control and crankcase ventilation service. Part number 46078 is intended as a direct replacement for the listed OE application.