Denso 234-8049 Oxygen Sensor - Downstream

Denso OE-Style Oxygen Sensor for Escape

Denso 234-8049 is an OE-style narrow-band oxygen sensor built for direct replacement on select Ford Escape models. It is engineered for the downstream position and uses a specific-fit design with a 4-wire configuration for accurate installation and reliable exhaust monitoring.

Key Features

• OE-style replacement oxygen sensor for downstream applications
• Narrow-band sensor type for factory-style signal response
• Specific fit design for select Ford Escape vehicles
• 4-wire construction with a 37.87 in. wiring harness length
• Built to OE standards with precision replacement dimensions
• Aluminum oxide trap layer helps protect the ceramic element from silicone and lead contamination

Product Details

This Denso oxygen sensor is designed for 2017-2022 Ford Escape downstream applications and is intended to restore proper exhaust feedback for the engine management system. The 234-8049 part number is a direct-fit replacement that follows OE-style specifications, helping ensure the right fit on the first installation. Denso’s oxygen sensor line is built and tested to strict OE standards, with attention to sensor response, connector fitment, and harness length for service-ready replacement. This part cross-references Carlson 16186 and Gates 22544 for the same application.

Denso’s OE-style oxygen sensor line focuses on exact replacement fitment and durable sensor construction. The aluminum oxide trap layer is used to help shield the sensing element from contamination that can affect signal quality and long-term performance. For drivers searching for a 2017 Ford Escape downstream oxygen sensor, a 2020 Ford Escape O2 sensor replacement, or a 2022 Ford Escape OE-style oxygen sensor, 234-8049 is built for that application.

Common Issues This Part May Address

• Check engine light related to downstream oxygen sensor faults
• Incorrect exhaust oxygen readings reported to the engine control system
• Reduced fuel economy caused by a failing sensor signal
• Rough engine operation tied to inaccurate air-fuel feedback
• Service replacement for a worn or contaminated Ford Escape oxygen sensor

Installation Notes and Tips

Verify the downstream location before installation and confirm connector style, wire count, and harness length against the removed sensor. This part is a specific-fit replacement for select Ford Escape models, so matching the vehicle year and position is important. For best results, inspect the exhaust threads and surrounding wiring before installation and clear any stored diagnostic trouble codes after the repair.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for consistent fit and function. The 234-8049 is built as an OE-style replacement for 2017-2022 Ford Escape downstream applications, with design details aimed at dependable sensor performance and long service life.