Delphi ES20210 rear oxygen sensor for the 2001-2002 Jeep Wrangler 4-cylinder 2.5L, the 2003-2004 Wrangler 4-cylinder 2.4L and other vehicles measures the oxygen in the exhaust so the engine computer can adjust fuel delivery. This Delphi oxygen sensor is sold as a single sensor.
- Delphi planar technology covers older, conical design sensors
- Smart design consolidates SKUs without using long wires
- Patented protective sensor coating helps prevent contamination
- Validated for all fuel types, including ethanol blends like E85
- Tested to 150,000 miles, plus 2,000 hours of severe thermal testing
Quick facts
- Part: Delphi ES20210 oxygen sensor
- Fits: the 2001-2002 Jeep Wrangler 4-cylinder 2.5L, the 2003-2004 Wrangler 4-cylinder 2.4L and other vehicles
- Position: Rear, rear left
A failing oxygen sensor can show up as a check engine light, poorer fuel economy or a rough idle. An exhaust leak, a misfire or damaged wiring can be behind the same signs, so find the cause before buying a sensor.
Fits
It works as an oxygen sensor replacement for the 2001-2002 Jeep Wrangler 4-cylinder 2.5L and the 2003-2004 Wrangler 4-cylinder 2.4L. It also fits as an oxygen sensor for the 2001-2002 Dodge Dakota 4-cylinder 2.5L and the 2001-2003 Dakota V6 3.9L or V8 5.9L. If your vehicle is not named here, look up your year, make, model and engine in the "Vehicles it fits" section. Quantity varies by vehicle: the 2003 Dodge Ram 1500 V6 3.7L takes two sensors, and the other engines named here take one.
Specifications
Fit and size
- Position: Rear, rear left
- Quantity per vehicle: varies by vehicle, one or two
Build and materials
- Technology: Delphi planar
- Surface: patented protective sensor coating
- Fuel compatibility: all fuel types, including ethanol blends like E85
In the box
One oxygen sensor and one instruction sheet.
Interchange: 234-4772 · 138-677 · 250-24345
5602 9112AA · 5604 1846AA · 5604 1952AA · OS1416 · OS1470 · 13671 · 13714 · 15304 · 23141 · REA1466 · REA1488 · SG1853 · SG663 · SG717 · SU3287 · SU3298
This part cross-references / interchanges with the following part numbers:
OS1416, OS1470, 13671, 13714, 15304, 5602 9112AA, 5604 1846AA, 5604 1952AA, 234-4772, 138-677, 23141, REA1466, REA1488, SG1853, SG663, SG717, 250-24345, SU3287, SU3298
Frequently Asked Questions
Is the Delphi ES20210 the right O2 sensor for a 2003-2004 Jeep Wrangler 4-cylinder 2.4L?
Yes. Delphi ES20210 is listed for the 2003-2004 Jeep Wrangler 4-cylinder 2.4L, and also for the 2001-2002 Wrangler with the 4-cylinder 2.5L.
Is the ES20210 an oxygen sensor for the 2003 Dodge Ram 1500 V6 3.7L, and how many does it take?
Yes. Delphi ES20210 fits the 2003 Dodge Ram 1500 V6 3.7L, which takes two sensors. This listing is one sensor.
Does the ES20210 come with an instruction sheet?
Yes. The package holds one oxygen sensor and one instruction sheet. Nothing else is listed in the box.
Can the ES20210 be used with E85 fuel?
Yes. Delphi ES20210 is validated for all fuel types, including ethanol blends like E85.
How was the ES20210 tested?
The ES20210 is tested to 150,000 miles, plus 2,000 hours of severe thermal testing. A patented protective coating on the sensor helps prevent contamination.
