Standard Ignition CP3178 Vapor Canister

Vapor Canister for EVAP System Repair

The Standard Ignition CP3178 vapor canister is built for emission control service in the evaporative system. It uses high-grade materials and professional-grade construction to support precise performance and long service life in daily repair work.

Compatible With Chevrolet Impala, Chevrolet Impala Limited, Buick Allure, Buick LaCrosse, Chevrolet Monte Carlo, and Pontiac Grand Prix applications listed below, this vapor canister is a direct-fit service part for EVAP system maintenance. The CP3178 is a practical choice when diagnosing fuel vapor storage and purge-related emission faults.

Key Features

• Standard Ignition CP3178 vapor canister for emission control service
• Filter element included for EVAP system filtration support
• 3 hose connectors and 3 ports for application-specific routing
• Hose sizes: 3/8 in., 5/8 in., and 3/4 in.
• 14.5 in. overall length
• Built with high-grade materials for extended service life
• Professional construction for technician-focused repair work

Detailed Description

The CP3178 vapor canister stores fuel vapors from the evaporative emissions system and helps route them through the proper purge path. Standard Ignition builds this part with durable materials and precise construction to meet the demands of emission system repair. It is a strong service option for Chevrolet Impala and Impala Limited, as well as Buick Allure, Buick LaCrosse, Chevrolet Monte Carlo, and Pontiac Grand Prix models listed in the fitment data. This part number, CP3178, is also a useful reference when matching an OE-style replacement during EVAP diagnosis.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• EVAP leak codes related to vapor storage or canister integrity
• Fuel vapor odor caused by a saturated or damaged canister
• Check engine light concerns tied to evaporative emissions faults
• Poor purge flow caused by restricted canister passages
• Emission inspection failures linked to EVAP system problems

Installation Notes and Tips

Verify hose routing, connector count, and port layout before installation. Confirm the vehicle’s emissions configuration, especially Federal Emissions and PZEV-related notes where listed in fitment. Inspect EVAP hoses, seals, and purge components during replacement so the new canister is not affected by a separate leak. For best results, clear diagnostic trouble codes and perform a system check after installation.

Quality Assurance

Standard Ignition uses high-grade materials and professional construction to support precision performance and prolonged service life. The CP3178 is engineered for emission control repair where consistent EVAP system operation matters.