Walker 590-1172 Engine Variable Valve Timing (VVT) Solenoid - Exhaust

Walker 590-1172 Exhaust VVT Solenoid

Walker Products 590-1172 is an engine variable valve timing solenoid for exhaust-side applications. It is built with a metal housing, black connector, and OE-style electrical interface to support precise oil control in the VVT system.

Key Features

• Engine variable valve timing (VVT) solenoid for exhaust applications
• Metal housing for durable engine-bay service
• Black female connector with 2 male terminals
• 1 mounting hole for direct-fit style installation
• Walker Products engineering and manufacturing support
• Meets or exceeds OEM standards and specifications

Product Details

Walker Products 590-1172 is part of the Walker Products engine management line, backed by the company’s long history in fuel system and sensor manufacturing. The brand focuses on OE-level fit, application accuracy, and technical support for aftermarket repairs. This exhaust VVT solenoid is listed for 2012-2015 Scion iQ, exhaust, and is a direct replacement choice for technicians servicing VVT-related drivability concerns on the Scion iQ. This part cross-references Dorman OE Solutions 918-098 for the same application.

What It Helps Address

• Check engine lights related to VVT control faults
• Rough idle caused by inconsistent cam timing control
• Loss of power from delayed exhaust cam response
• Oil flow control issues in the variable valve timing system
• Driveability complaints tied to exhaust-side timing performance

Installation Notes

Verify the connector style, terminal count, and mounting location before installation. This Walker 590-1172 exhaust VVT solenoid is specified for the exhaust position on 2012-2015 Scion iQ models. Confirm the vehicle’s engine code and OE part match during diagnosis, and inspect related wiring, oil passages, and connectors before replacing the solenoid.

Quality Assurance

Walker Products is an ISO 9001/IATF16949 certified manufacturer with in-house product management and engineering support. The company states that its parts are manufactured to meet or exceed OEM standards and specifications.