Delphi ES20112 Upstream Heated Oxygen Sensor 4-Wire Direct Fit

The Delphi ES20112 is a direct-fit, heated upstream oxygen sensor engineered to OE specifications. Also known as an O2 sensor or lambda sensor, it monitors exhaust oxygen content to help the engine control module maintain the optimal air-to-fuel ratio for peak engine performance, fuel efficiency, and reduced emissions.

Delphi has been a leading supplier of oxygen sensor technology to original equipment automakers for decades, and that same engineering expertise is built into every aftermarket unit. The ES20112 features a planar sensor element with an integrated heater that reaches operating temperature rapidly for fast closed-loop activation and reduced cold-start emissions.

Key Features:

• Direct Fit: OEM-matched connector (4-pin square), threads (18 x 1.5 mm), and wire length for hassle-free installation
• 4-Wire Heated Design: Integrated heater circuit for quick warm-up and accurate readings across all operating conditions
• Overall Length: 14.961 in (380 mm)
• Thread Size: 18 x 1.5 mm | Wrench Size: 7/8 in.
• Position: Upstream / Front (pre-catalytic converter)
• Connector Style: Square 4-blade female
• Patented Contamination-Resistant Coating: Resists silicone, phosphorous, and other fuel and oil additives for long service life
• E85 Compatible: Coating provides reliable operation with E85 and other alcohol-blend fuels
• Meets or Exceeds OE Specifications: Tested and calibrated to OE standards for accurate readings
• Service Interval: Rated for up to 150,000 miles
• Sold individually

Engineered with the same rigor as original equipment parts, the Delphi ES20112 oxygen sensor is a reliable replacement that helps restore proper engine management, eliminate check-engine codes related to the O2 sensor circuit, and support optimal fuel economy.