Standard Ignition CP104 Vapor Canister Purge Valve

Vapor Canister Purge Valve for Evaporative Control

Standard Ignition CP104 is a vapor canister purge valve for evaporative emission control systems. It is built to meet or exceed original equipment specifications and uses industrial-grade materials for consistent operation in the evaporative system.

Compatible with 1987 Buick Century and 1983-1984 Pontiac Firebird, this purge valve is a direct-fit service part for vehicles that need accurate vapor management from the charcoal canister to the engine intake. The CP104 is also cross-referenced to select OE and aftermarket numbers for the same application.

Key Features

• Vapor canister purge valve for emission control service
• Standard Ignition CP104 replacement part number
• 3 hose connectors and 3 ports
• Hose sizes: 1/4 in., 5/16 in.; 7 mm, 8 mm
• No connector style for applications using direct hose routing
• Built to OE-level specifications with end-of-line testing

Application Details

Fits 1987 Buick Century, N/A. Fits 1983-1984 Pontiac Firebird, N/A. Standard Ignition CP104 is a practical replacement when servicing the evaporative system on these vehicles, including Buick Century and Pontiac Firebird applications that require a 3-port purge valve with the listed hose sizes.

This part cross-references 2-28011 and 17074286 for the same application.

What It Helps Address

• Check engine light related to evaporative emission system faults
• Fuel vapor routing problems from a sticking purge valve
• Rough idle or drivability issues tied to purge control faults
• Failed emissions inspection caused by EVAP system malfunction
• Vacuum leak symptoms at the purge valve or hose connections

Installation Notes

Verify hose size, port count, and connector style before installation. Match the existing hose routing on the vehicle and inspect nearby EVAP hoses for cracks, soft spots, or contamination before replacing the valve. Confirm the part number CP104 against the vehicle’s original purge valve configuration for Buick Century and Pontiac Firebird service.

Quality Assurance

Standard Ignition states that its canister purge valves are manufactured to meet or exceed original equipment specifications. The CP104 is produced with industrial-grade materials and undergoes end-of-line testing to support consistent quality and service life.