Walker 350-33069 Oxygen Sensor - Upstream

Overview of Walker Oxygen Sensor for Mercedes-Benz 190E

The Walker 350-33069 oxygen sensor is designed specifically for the Mercedes-Benz 190E, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a threaded mounting type and a radiused polygon connector for secure installation.

• Heated oxygen sensor with 3-wire configuration
• Specific fit for Mercedes-Benz 190E models
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length of 10.35 inches and overall length of 13.9 inches
• Connector includes both male and female radiused polygon shapes
• 20 gauge wire for reliable signal transmission

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-33069) is engineered to meet the exact specifications required by the Mercedes-Benz 190E. The sensor’s heated design allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The 3-wire setup supports accurate oxygen level readings, which are critical for the vehicle’s engine control unit to adjust air-fuel mixture precisely. The sensor’s threaded mounting type with an 18.0 mm diameter ensures a secure fit in the exhaust system, while the radiused polygon connectors—both male and female—provide a reliable electrical connection. With a wiring harness length of 10.35 inches and an overall length of 13.9 inches, this sensor fits seamlessly into the designated location without modification.

Walker Products Aftermarket Line

The Walker Products Aftermarket line focuses on providing replacement emission control components that meet or exceed OEM standards. This oxygen sensor is part of that line, offering a direct fit and reliable performance for Mercedes-Benz 190E owners seeking a quality aftermarket solution. The product line emphasizes compatibility and durability, ensuring that each sensor supports proper engine management and emissions compliance.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for improved fuel economy
• Helps resolve rough idling caused by faulty sensor readings
• Reduces engine hesitation and stalling related to emission sensor failure
• Supports passing emissions inspections by maintaining proper exhaust gas monitoring
• Prevents check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

Installation of the Walker 350-33069 oxygen sensor requires removal of the old sensor from the exhaust manifold or pipe. Use appropriate tools to avoid damaging the threaded mounting. Ensure the wiring harness is connected securely to the vehicle’s harness using the radiused polygon connectors. Verify the sensor orientation and torque specifications according to Mercedes-Benz 190E service guidelines. It is recommended to inspect the wiring and connector for corrosion or damage before installation.

Quality Assurance and Warranty

Walker oxygen sensors undergo rigorous testing to meet emission control standards and provide consistent performance. This part is manufactured to match OEM specifications for fit and function. While specific warranty details are not provided here, Walker Products Aftermarket parts typically come with a limited warranty covering defects in materials and workmanship. Consult product documentation or the supplier for exact warranty terms.