Standard Ignition PVS72 Ported Vacuum Switch

Ported Vacuum Switch for OE-Style Emissions Control

Standard Ignition PVS72 is a ported vacuum switch built for precise vacuum routing in emissions-related systems. It uses a brass and high-temperature plastic housing built to OEM specification, with thermal elements engineered for consistent operation in demanding underhood conditions.

Compatible With 1975-1976 Chevrolet Camaro, 1975-1976 Pontiac Firebird, and other classic GM applications that use a 2-port ported vacuum switch, this part supports accurate vacuum signal control for original-style drivability and emissions function.

Key Features

• Ported vacuum switch with 2 hose connectors
• 3/8"-18 NPT thread size
• Brass and high-temperature plastic construction
• OEM-spec fit and performance targets
• Thermal element design for stable switching behavior
• Standard Ignition PVS72 for classic GM emissions service

Detailed Description

The Standard Ignition PVS72 is designed for vehicles that rely on a ported vacuum switch to manage vacuum flow based on operating temperature. Its construction combines brass and heat-resistant plastic for durability, while the thermal element design helps maintain consistent response in emission-control applications. This part cross-references 3031548 and E981 for the same application.

Fits 1975-1976 Chevrolet Camaro, N/A; Fits 1975-1976 Pontiac Firebird, N/A; Fits 1975-1976 Chevrolet Nova, N/A; Fits 1975-1976 GMC Jimmy, N/A; Fits 1975-1976 Oldsmobile Omega, N/A. Standard Ignition PVS72 is also listed for additional 1975-1976 Chevrolet, GMC, Oldsmobile, and Pontiac applications that use the same 2-port ported vacuum switch configuration.

What It Helps Address

• Incorrect vacuum routing in temperature-controlled emissions systems
• Vacuum signal loss caused by a worn or cracked switch body
• Drivability issues tied to inconsistent EGR vacuum control
• Restoration needs for original-style GM vacuum switch service
• Replacement of a failed 2-port ported vacuum switch

Installation Notes and Tips

Verify the thread size, hose connector count, and OE reference before installation. Match the vehicle’s original vacuum routing exactly, and inspect adjacent hoses and fittings for age-related wear while servicing the switch. Confirm the application against the listed fitment for 1975-1976 Chevrolet C10, C20, C30, Camaro, G10, G20, G30, K10, K20, K5 Blazer, Nova, GMC G15, Jimmy, Oldsmobile Cutlass Supreme, Omega, Pontiac Firebird, LeMans, and Grand LeMans.

Quality Assurance

Standard Ignition manufactures emission components with process control from component selection through finished product inspection. The PVS72 is built to OEM specification using materials selected for underhood temperature resistance and consistent performance.