Standard Motor Products Secondary Air Injection Pump Diverter Valve

Standard Motor Products A.I.R. Diverter Valves: Emission-Grade Precision

When a secondary air injection system starts misbehaving, one of the first components to inspect is the diverter valve. This valve is the gatekeeper of your engine's air injection system, routing pressurized air from the pump to the exhaust ports during cold starts — and safely diverting it when conditions change. A failed or stuck diverter valve can trigger check-engine lights, cause failed emissions tests, and put unnecessary strain on the pump itself. That's why choosing a quality replacement matters.

Standard Motor Products (SMP) has been a trusted name in aftermarket engine management and emission control components for decades. SMP's Standard® brand is a cornerstone of their secondary air injection pump diverter valve lineup, carrying parts engineered specifically to restore proper system function. As part of their broader commitment to emission controls — which spans EVAP, EGR, and PCV systems — SMP brings the same engineering rigor to A.I.R. diverter valves.

What Makes SMP's A.I.R. Diverter Valves Stand Out

Standard Motor Products markets its secondary air injection diverter valves under the Standard Motor A.I.R. Diverter Valve product line. These components are manufactured from durable materials — including cast aluminum and reinforced plastic, depending on the application — and are built to factory specifications for a stock-location installation that requires no modification.

• OE-Spec Construction: Each valve is engineered to match original equipment dimensions and materials, whether that means cast aluminum for high-heat applications or durable polymer housings for weight-sensitive fitments.
• End-of-Line Testing: SMP's quality protocols include end-of-line testing on emission control components to ensure every part meets performance standards before it leaves the factory.
• Broad Vehicle Coverage: The lineup covers a wide range of domestic applications, including popular GM platforms such as Buick, Chevrolet, Cadillac, GMC, Pontiac, Saturn, and Saab — spanning part numbers like DV17, DV111, DV126, DV129, DV133, DV144, and DV150.
• Direct-Fit Replacement: Valves are designed to install in the stock location with no cutting, drilling, or bracket fabrication required, making them suitable for both professional technicians and experienced DIYers.

Emission Control Expertise You Can Trust

SMP's depth in emission control is considerable. Their Standard® brand emission control program encompasses EVAP systems, EGR components, PCV systems, and secondary air injection — reflecting a company that understands these interconnected systems holistically, not in isolation. When technicians encounter a secondary air injection fault, they can rely on SMP to supply not just the diverter valve but also related components that may need attention alongside it.

Whether you're diagnosing a P0411 code on a mid-2000s GM SUV or performing a proactive replacement on a high-mileage import, Standard Motor Products' A.I.R. diverter valves offer the OE-grade quality and precise fitment that keeps emission systems operating as designed.