Wells 4B1391 Vapor Canister for EVAP Emissions System

The Wells 4B1391 Vapor Canister is a critical component of your vehicle's evaporative emissions control (EVAP) system. This canister stores and contains harmful fuel vapors from the fuel system, preventing them from being released into the atmosphere where they can cause environmental damage.

Key Features:

• Constructed with high-quality reinforced plastic housing for durability and long service life
• Contains activated carbon filter material that effectively traps and stores fuel vapors
• Helps reduce fuel consumption by recycling captured vapors back into the engine
• Robust seals prevent leaks and maintain proper emissions control
• Direct replacement design for straightforward installation

This vapor canister works as part of the EVAP system to capture fuel vapors when the vehicle is parked and during operation. When the engine is running, the purge valve opens to allow these stored vapors to be drawn into the intake manifold and burned during combustion, improving fuel efficiency and reducing emissions. If you're experiencing symptoms like rough idling, fuel odors, startup issues, or check engine light codes related to the EVAP system, a faulty vapor canister may be the cause.

Cross-Reference Part Numbers: 911-863, CP1392, CP3257, VC4314, 3142026300