Airtex 4B1004 Fuel Vapor Storage Canister

The Airtex 4B1004 is a high-quality fuel vapor storage canister designed to be a direct replacement for your vehicle's evaporative emission control (EVAP) system. This essential emissions control component captures and stores gasoline vapors that evaporate from the fuel tank, preventing harmful hydrocarbons from escaping into the atmosphere.

Key Features:

• Filled with activated charcoal that absorbs and traps fuel vapors until the engine can burn them
• Direct-fit replacement with OEM-equivalent specifications
• Durable plastic construction designed to withstand underbody mounting conditions
• Helps eliminate fuel odors and prevents check engine light codes related to EVAP system leaks
• Cross-references with Standard Motor Products CP1031 and Wells VC120

How It Works:

The vapor canister connects to your fuel tank via vent lines and temporarily stores fuel vapors in its activated charcoal media. When the engine is running and reaches operating temperature, the purge valve opens and allows engine vacuum to draw these stored vapors into the intake manifold where they are burned as part of the normal combustion process. This prevents fuel waste, reduces emissions, and helps your vehicle pass emissions testing.

Common Symptoms of a Failed Vapor Canister:

• Check engine light with EVAP system fault codes
• Strong fuel odor near the vehicle
• Hissing sound when removing the fuel cap due to excessive tank pressure
• Failed emissions inspection
• Difficulty filling the fuel tank

This canister is manufactured by Airtex, a trusted name in automotive fuel system components. It is engineered to meet or exceed OEM specifications for reliable performance and emissions compliance.