Walker 350-33049 Oxygen Sensor - Downstream, Upstream, Upstream Left or Upstream Right

Overview of Walker 350-33049 Oxygen Sensor for Subaru

The Walker 350-33049 oxygen sensor is designed specifically for Subaru Impreza and Legacy models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

• Heated sensor type for faster response times
• Specific fit for Subaru Impreza and Legacy vehicles
• Threaded mounting type with 18.0 mm thread diameter
• 15.67 inches wiring harness length with 3 wires of 20 gauge
• Radiused polygon male connector for secure connection
• Overall length of 19.21 inches for proper installation

Detailed Product Description

The Walker 350-33049 oxygen sensor is a heated sensor designed to provide precise air-fuel mixture readings for Subaru Impreza and Legacy models. Its 3-wire configuration and 20 gauge wire ensure reliable electrical signals, while the 15.67-inch wiring harness length offers flexibility during installation. The sensor features a radiused polygon male connector that fits securely with the vehicle’s wiring harness, reducing the risk of connection issues. The threaded mounting type with an 18.0 mm diameter allows for straightforward replacement and secure attachment to the exhaust system. With an overall length of 19.21 inches, this sensor is engineered to fit specific Subaru models without modification.

Walker Products Aftermarket Line

This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing reliable emission control components tailored to specific vehicle applications. The product line emphasizes precise fitment and quality construction to meet or exceed OEM standards, ensuring compatibility and durability for Subaru vehicles like the Impreza and Legacy.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for improved fuel efficiency
• Helps resolve check engine light triggers related to oxygen sensor faults
• Reduces emissions by providing correct air-fuel ratio data
• Prevents rough idling and engine performance issues caused by faulty sensors
• Supports proper catalytic converter function by monitoring exhaust gases

Installation Notes and Tips

When installing the Walker 350-33049 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness. The 18.0 mm threaded sensor should be tightened to manufacturer torque specifications to prevent leaks. Verify the radiused polygon male connector is fully seated to maintain a secure electrical connection. This sensor is designed for direct replacement on Subaru Impreza and Legacy models, so no modifications are necessary.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors undergo rigorous testing to meet emission control standards and ensure durability. The 350-33049 part number is manufactured to provide consistent performance and reliability. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship, supporting long-term use in Subaru Impreza and Legacy vehicles.