Dorman 911-117 Engine Crankcase Vent Valve

Engine Crankcase Vent Valve for BMW

This Dorman engine crankcase vent valve is a standard replacement for select BMW applications, built to match the original valve’s fit and function. It uses plastic, rubber, and steel construction to support dependable crankcase ventilation performance in the 2003-2010 BMW 545i, 645Ci, 745i, 550i, 650i, 750i, and X5 lineup.

• Standard replacement crankcase vent valve for OE-style fitment
• Constructed from plastic, rubber, and steel
• Includes cap, diaphragm, and spring
• Designed for reliable crankcase ventilation performance
• Fits select BMW 545i, 645Ci, 745i, 550i, 650i, 750i, and X5 models

Detailed Product Overview

Dorman 911-117 is engineered to match the original crankcase vent valve on specified vehicles, helping maintain proper crankcase ventilation system operation. As a standard replacement part, it is built for direct-fit service on BMW models including the 2004-2005 BMW 545i, 2004-2005 BMW 645Ci, 2003-2005 BMW 745i, 2006-2010 BMW 550i, 2006-2010 BMW 650i, 2006-2008 BMW 750i, and 2004-2010 BMW X5. This part cross-references Genuine 11127547058 for the same application.

Common Symptoms This Part May Address

• Rough idle related to crankcase ventilation issues
• Excessive oil vapor or oil residue in the intake system
• Vacuum-related drivability concerns
• Crankcase pressure control problems
• Check engine light conditions tied to ventilation faults

Installation Notes and Tips

Verify the vehicle year, model, and engine configuration before ordering. Compare the original valve, cap, diaphragm, and spring layout to confirm correct replacement. Clean surrounding components during service and inspect connected hoses and seals for wear before reassembly. Dorman 911-117 is a direct-fit replacement for the listed BMW applications, including BMW 550i, BMW 650i, and BMW X5 models.

Quality Assurance

Dorman designs this crankcase vent valve to match OE fit and function and builds it with materials selected for durability and reliable performance. The part is manufactured as a standard replacement for specified BMW crankcase ventilation system applications.