Standard Ignition CP3656 Vapor Canister

Vapor Canister for Audi Evaporative Systems

Standard Ignition CP3656 is a vapor canister for the evaporative emission control system, built with black housing and charcoal filter media. It uses two hose connections with 3/8" and 5/8" hose sizes and includes a filter element for service-ready replacement.

Compatible with select Audi A4, A4 allroad, A4 Quattro, S4, S5, S5 Sportback, A5 Quattro, A5 Sportback, RS5, and RS5 Sportback applications, this Standard Ignition CP3656 vapor canister supports proper fuel vapor storage and routing in the EVAP system.

Key Features

• Black finish for a clean OE-style appearance
• Charcoal filter media with included filter element
• Two hose connectors and two ports
• Hose sizes: 3/8" and 5/8"
• No electrical connector required
• Standard Ignition CP3656 replacement part

Detailed Description

The vapor canister stores fuel vapors from the evaporative emission control system and helps route them through the proper purge path. Standard Ignition CP3656 is built with charcoal media to capture vapors and maintain EVAP system function across select Audi platforms, including Audi A4, A4 allroad, and A4 Quattro applications. It also cross-references 2-70516 and 8W0201801F for the same application.

Use this vapor canister when servicing EVAP-related components on 2017-2020 Audi A4, 2017-2020 Audi A4 allroad, 2017-2020 Audi A4 Quattro, 2018-2020 Audi S4, 2018-2020 Audi S5, 2018-2020 Audi S5 Sportback, 2018-2019 Audi A5 Quattro, 2018-2019 Audi A5 Sportback, 2018-2019 Audi RS5, and 2019 Audi RS5 Sportback. Standard Ignition CP3656 is also listed for 2021 Audi A4 Quattro with DMSA engine.

What It Helps Address

• EVAP system vapor storage faults
• Fuel vapor routing issues
• Charcoal canister saturation or deterioration
• Emission control warning conditions tied to the evaporative system
• Damaged or leaking canister housing

Installation Notes and Tips

Verify hose size and port count before installation. This unit uses two hose connections and does not include mounting hardware, so reuse or source the correct hardware as needed. Confirm vehicle application by year, model, and engine notes before ordering, especially on 2021 Audi A4 Quattro DMSA engine applications.

Quality Assurance

Standard Ignition CP3656 is a replacement vapor canister built to match the listed evaporative system configuration for the specified Audi applications. Confirm fitment against the vehicle’s EVAP layout and part number before installation.