Denso 234-5002 Air / Fuel Ratio Sensor - Upstream

Overview of the Denso OE Style Air/Fuel Ratio Sensor

The Denso OE Style Air/Fuel Ratio Sensor 234-5002 is designed specifically for Cadillac CTS, SRX, and STS models. This heated sensor ensures accurate air and fuel mixture readings to maintain optimal engine performance and emissions control.

• Heated sensor type for faster response times
• Specific fit for Cadillac CTS, SRX, and STS
• 14.53-inch wiring harness length for precise installation
• Five-wire configuration with male connector
• Thread diameter of 0.711 inches for secure mounting
• Regular grade type for reliable operation

Detailed Product Description

The Denso 234-5002 air/fuel ratio sensor is engineered to meet the exact specifications of select Cadillac vehicles, including the CTS, SRX, and STS. As a heated sensor, it quickly reaches operating temperature, providing accurate oxygen level readings to the engine control unit. This sensor features a 14.53-inch wiring harness length and a five-wire setup with a male connector, ensuring compatibility and ease of connection. The thread diameter of 0.711 inches allows for proper installation and sealing within the exhaust system. Manufactured under the OE Style brand line, this sensor aligns with original equipment standards for fit and function.

About the OE Style Product Line

The OE Style line from Denso focuses on delivering parts that closely replicate original equipment specifications. This ensures that the 234-5002 air/fuel ratio sensor provides a direct replacement solution with consistent performance and durability. The OE Style designation indicates that this sensor is designed to meet the same quality and fitment criteria as the factory-installed component in Cadillac CTS, SRX, and STS models.

Common Applications and Issues Addressed

• Helps resolve engine performance problems related to incorrect air/fuel mixture
• Reduces emissions by providing accurate oxygen sensor data
• Prevents rough idling and poor fuel economy
• Addresses check engine light triggers related to oxygen sensor faults
• Supports proper catalytic converter function by maintaining correct fuel ratios

Installation Notes and Tips

When installing the Denso 234-5002 sensor, ensure the wiring harness length of 14.53 inches is sufficient for your vehicle’s routing requirements. The male connector and five-wire configuration should match the factory harness for a secure connection. Use appropriate tools to avoid damaging the 0.711-inch thread diameter during installation. It is recommended to follow vehicle-specific service manuals for torque specifications and sensor placement.

Quality Assurance and Warranty

Denso manufactures the 234-5002 air/fuel ratio sensor to meet stringent quality standards. The OE Style product line ensures reliable performance consistent with original equipment. While specific warranty details are not provided here, Denso parts typically come with manufacturer-backed warranties to cover defects in materials and workmanship.