Denso 234-4024 Oxygen Sensor - Downstream Left

Denso OE Style Oxygen Sensor 234-4024

Denso 234-4024 is an OE Style heated oxygen sensor built for direct replacement in specific GM truck and SUV applications. It is engineered for a first-time fit and accurate signal feedback, helping maintain proper air-fuel control in downstream left locations.

This Denso oxygen sensor is a specific-fit replacement for 2001 Chevrolet Silverado 1500 HD, 1999-2001 Chevrolet Silverado 2500, and 2001 GMC Sierra 1500 applications, among others. The OE-style design supports clean integration with the factory connector and harness layout.

Key Features

• Heated oxygen sensor for downstream left placement
• Specific-fit design for direct replacement
• 4-wire configuration with female connector
• Threaded mounting type with 0.708 in. thread diameter
• 22.05 in. wiring harness length
• Built to OE standards for consistent sensor performance
• Aluminum oxide trap layer helps protect the ceramic element from silicone and lead contamination

OE Style Design and Fitment

Denso’s OE Style line focuses on exact replacement fit and factory-style operation. For drivers searching for a downstream left oxygen sensor for Chevrolet Silverado 2500 or GMC Sierra 2500 applications, Denso 234-4024 provides the correct sensor type, connector style, and threaded mounting format for the listed vehicles. This part cross-references Bosch 13029 for the same application.

Compatible With: 2001 Chevrolet Silverado 1500 HD, downstream left; 1999-2001 Chevrolet Silverado 2500, downstream left; 2001 Chevrolet Silverado 2500 HD, downstream left; 2001 Chevrolet Silverado 3500, downstream left; 2000-2001 Chevrolet Suburban 2500, downstream left; 2001 GMC Sierra 1500, downstream left; 2001 GMC Sierra 1500 HD, downstream left; 1999-2001 GMC Sierra 2500, downstream left; 2001 GMC Sierra 2500 HD, downstream left; 2001 GMC Sierra 3500, downstream left; 2001 GMC Yukon XL 1500, downstream left; 2000-2001 GMC Yukon XL 2500, downstream left.

What This Oxygen Sensor Helps Address

• Incorrect oxygen sensor readings from a worn downstream sensor
• Check engine light concerns related to sensor performance
• Rough fuel control caused by delayed or inaccurate exhaust feedback
• Reduced fuel economy tied to aging emissions sensors
• Factory-fit issues from mismatched connector or harness length

Installation Notes and Tips

Verify the downstream left position before ordering and match the connector, wire count, and thread size to the original sensor. Inspect the exhaust bung threads and wiring routing before installation, and confirm the harness reaches the factory connection without strain. For best results, compare the removed sensor to Denso 234-4024 before final tightening.

Quality Assurance

Denso manufactures and tests this sensor to OE standards for replacement accuracy and dependable operation. The OE Style construction is intended to deliver the correct part and fit for the listed Chevrolet Silverado and GMC Sierra applications.