Standard Ignition CP3543 Vapor Canister

OE-Style Vapor Canister Replacement

Standard Ignition CP3543 is a direct-fit vapor canister for evaporative emission control service. It is built for pressurized fuel systems and includes an integrated check valve calibrated to the vehicle’s specific operating pressure needs.

Compatible With Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, GMC Sierra 3500 HD, Cadillac CTS, and Chevrolet Avalanche applications across the listed model years.

Key Features

• Direct-fit OE replacement for proper fit, form, and function
• Integrated check valve matched to vehicle-specific pressure requirements
• Designed for pressurized fuel systems and sustained creep loads
• Black finish with a 12.75-inch overall length
• Includes filter element
• Three hose connectors and three ports for evaporative system routing

Detailed Description

Standard Ignition CP3543 vapor canister is engineered as an OE replacement for evaporative emission control repair. The canister is designed to restore vapor storage and routing performance in the EVAP system, with an integrated check valve that supports the pressure demands of the application. Its direct-fit design helps maintain factory-style fitment on Chevrolet Silverado 2500 HD and 3500 HD, GMC Sierra 2500 HD and 3500 HD, as well as Cadillac CTS and Chevrolet Avalanche models listed below.

This part cross-references 25937605 and CP1708 for the same application.

What This Part Helps Address

• EVAP system fault codes related to vapor storage or purge flow
• Fuel vapor leakage concerns from a damaged canister
• Check valve or pressure retention issues in the evaporative system
• Hard-to-diagnose emissions failures during inspection
• Fitment problems caused by a worn or incorrect replacement canister

Installation Notes and Fitment

Fits 2011-2016 Chevrolet Silverado 2500 HD, N/A.

Fits 2011-2016 Chevrolet Silverado 3500 HD, N/A, w/ Short Bed.

Fits 2011-2015 GMC Sierra 2500 HD, N/A.

Fits 2016 GMC Sierra 3500 HD, N/A.

Fits 2011-2015 Chevrolet Silverado 2500, N/A.

Fits 2011-2013 Chevrolet Silverado 3500, N/A.

Fits 2015 Chevrolet Silverado 3500, N/A.

Fits 2011-2015 GMC Sierra, N/A.

Fits 2011-2015 GMC Sierra 3500 HD, N/A, Short Bed.

Fits 2014 Cadillac CTS, N/A.

Fits 2013 Chevrolet Avalanche, N/A.

Verify hose routing, port alignment, and EVAP connections before installation. Confirm the canister matches the vehicle’s bed-length or configuration notes where listed.

Quality Assurance

Standard Ignition manufactures this vapor canister as an OE-style replacement with application-specific pressure calibration and factory-oriented construction for consistent service performance.