Delphi ES20419 Oxygen Sensor - Rear

Delphi ES20419 Rear Oxygen Sensor

The Delphi ES20419 is a heated rear oxygen sensor built for precise exhaust monitoring on select Suzuki applications. It combines OE heritage with application-specific fitment for the 2008-2013 Suzuki SX4, making it a direct replacement choice for rear sensor service.

Key Features

• Heated oxygen sensor for faster operating temperature and stable signal output
• Rear position fitment for 2008-2013 Suzuki SX4
• 4-wire design with square connector shape
• 18 x 1.5 mm thread size for proper exhaust bung fitment
• 260.0 overall length for routing and installation clearance
• Includes oxygen sensor and instruction sheet
• OE-focused engineering backed by Delphi’s long history supplying automakers

Detailed Description

Delphi ES20419 is an emission control oxygen sensor designed for the rear location on the 2008-2013 Suzuki SX4. As a heated sensor, it helps the engine management system monitor exhaust oxygen content after the catalytic converter reaches operating temperature. This part number, ES20419, is built with Delphi’s OE experience and aftermarket knowledge to support accurate replacement on the Suzuki SX4 rear sensor position.

This sensor uses a 4-wire configuration, a square connector, and an 18 x 1.5 mm thread size. The 260.0 overall length supports proper harness routing in the exhaust area. This part cross-references Bosch 18028 and DENSO Auto Parts 234-4165 for the same application.

What It Helps Address

• Check engine light related to rear oxygen sensor performance
• Faulty exhaust oxygen readings after the catalytic converter
• Rough emissions test results tied to sensor signal issues
• Delayed sensor response from a worn heated O2 sensor
• Replacement needs on a 2008-2013 Suzuki SX4 rear sensor location

Installation Notes and Tips

Verify the rear sensor location before installation and confirm the connector shape, wire count, and thread size match the original unit. Inspect the exhaust bung threads and harness routing before tightening the sensor. For best results, compare the removed sensor to Delphi ES20419 and confirm fitment on the 2008-2013 Suzuki SX4, rear.

Quality Assurance

Delphi draws on more than 100 years of OE experience and supplier knowledge from top automakers, with aftermarket parts engineered from that heritage. The ES20419 is built to reflect that OE-focused approach for emission control service.