Beck Arnley 045-0391 Engine Crankcase Vent Valve

Engine Crankcase Vent Valve for BMW

Beck Arnley 045-0391 is an engine crankcase vent valve for select BMW applications. It is built to match foreign nameplate OE specifications for form, fit, and function, giving you a direct replacement option for crankcase ventilation service.

Key Features

• Engine crankcase vent valve for emission control service
• OE-style fit and function for foreign nameplate applications
• Paraphrased from Beck Arnley sourcing standards for accurate replacement selection
• Compatible with select BMW 550i, 650i, X5, 750i, 750Li, 545i, 645Ci, 745i, and 745Li applications
• Part number 045-0391 for catalog and fitment lookup

Detailed Description

Beck Arnley 045-0391 is an engine crankcase vent valve used in the crankcase ventilation system to support proper vapor routing on select BMW models. Beck Arnley sources parts to foreign nameplate OE specifications, so this valve is selected for the correct form, fit, and function needed during emission control repair. This part number 045-0391 is a direct-fit service part for BMW 550i, BMW 650i, and BMW X5 applications, along with additional 7 Series and V8 coupe/sedan fitments.

What It Helps Address

• Crankcase ventilation faults
• Excessive oil vapor in the intake system
• Rough idle related to ventilation system wear
• Check engine light concerns tied to crankcase ventilation performance
• Vacuum-related drivability issues on BMW engines

Installation Notes and Tips

Verify the vehicle year, model, and engine configuration against the listed fitment before installation. Inspect connected hoses, seals, and nearby ventilation components for wear or contamination during service. For BMW 550i, 650i, and X5 applications, confirm the original valve style matches the replacement part number 045-0391.

Quality Assurance

Beck Arnley parts are sourced to meet foreign nameplate OE specifications for form, fit, and function. This helps ensure the replacement aligns with the original application requirements for select BMW crankcase ventilation service.