Standard Ignition PVS80 Ported Vacuum Switch

Ported Vacuum Switch for GM Emissions Control

Standard Ignition PVS80 is a ported vacuum switch built with a brass body and high-temperature plastic housing to match OEM specifications for fit and function. It uses thermal elements engineered for consistent operation in emission-control systems, making it a direct replacement choice for older Chevrolet and GMC trucks, vans, and utility models.

• Ported vacuum switch for emission-control vacuum routing
• Brass construction with high-temperature plastic housing
• OEM-spec fit and performance
• 4 hose connectors for 3/16" vacuum hose
• 1/2"-14 NPT thread size
• Gray 4-port configuration on listed applications

Detailed Product Information

The Standard Ignition PVS80 is designed for vehicles that rely on a ported vacuum signal to manage emission-system operation. Its thermal design helps regulate vacuum flow as operating conditions change, while the brass and heat-resistant housing materials support durability in demanding underhood environments. This part cross-references Dayco 81151 for the same application.

Compatible With 1983-1990 Chevrolet P30, 1983-1990 GMC P3500, 1988-1989 Chevrolet C3500, 1988-1989 Chevrolet G30, 1988-1989 Chevrolet K3500, and other listed Chevrolet and GMC applications including C/K trucks, G-series vans, R/V-series models, and select Suburban, Blazer, Jimmy, and El Camino fitments. Search terms such as Chevrolet C10 vacuum switch replacement, GMC G3500 ported vacuum switch, and PVS80 emission switch replacement align with this part.

Common Problems This Part Can Address

• Incorrect vacuum routing in emission-control circuits
• Faulty thermal switching in EGR-related systems
• Vacuum leaks at a worn switch body or hose connection
• Driveability issues tied to inconsistent vacuum signal control
• Replacement needs on aging Chevrolet and GMC emission hardware

Installation Notes and Tips

Verify the thread size, hose size, and 4-port layout before installation. Match the vehicle’s emissions configuration, including California or Federal calibration notes where listed, and confirm the original switch location and hose routing before removing the old unit. Use clean vacuum hose ends and inspect adjacent lines for cracks or hardening during service.

Quality Assurance

Standard Ignition manufactures this switch with component-level quality control from raw materials through finished product. The PVS80 is built to OEM specification for precision fit and consistent performance in emission-control applications.