Denso 234-4388 Oxygen Sensor - Downstream

Denso OE Style Oxygen Sensor for Suzuki SX4

Denso 234-4388 is an OE Style heated oxygen sensor built for precise replacement on the 2007 Suzuki SX4 downstream position. It is engineered for a specific fit, with a 4-wire male connector and threaded mounting for direct service on the correct application.

Key Features

• OE Style replacement oxygen sensor for emission control service
• Heated sensor design for faster operating response
• Specific fit for the 2007 Suzuki SX4 downstream location
• 4-wire configuration with male connector
• Threaded mounting with 0.708 in. thread diameter
• 17.32 in. wiring harness length for application-specific routing

Product Details

Denso 234-4388 is manufactured and tested to OE standards for accurate replacement and first-time fit. The sensor uses Denso’s aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable engine management and consistent emissions-system performance. This OE Style line is built for drivers and technicians who need the correct downstream oxygen sensor for a 2007 Suzuki SX4, with the fit and connector layout matched to the original application. This part cross-references Bosch 15294 for the same application.

What This Oxygen Sensor Helps Address

• Check engine light related to downstream oxygen sensor faults
• Incorrect air-fuel feedback from a worn sensor
• Reduced fuel economy caused by slow sensor response
• Emissions test failures tied to sensor performance
• Rough or inconsistent engine operation from contaminated sensing elements

Installation Notes and Tips

Install this sensor in the downstream position on the 2007 Suzuki SX4 and verify connector style, wire count, and thread size before installation. Use proper oxygen-sensor service tools to avoid damaging the threaded mounting or harness, and inspect the exhaust bung threads for corrosion or debris before threading in the replacement. Confirm the harness routing matches the original path so the lead length remains clear of hot exhaust components.

Quality Assurance

Denso manufactures this OE Style oxygen sensor to strict original-equipment standards and tests each component for replacement accuracy and fit consistency. The design focuses on dependable sensor response, contamination resistance, and long-term service life in the intended application.