Delphi Oxygen Sensor P/N:ES10923
Delphi ES10590 front oxygen sensor for the 1998-1999 Subaru Forester H4 2.5L and other vehicles measures oxygen in the exhaust for the engine computer. This Delphi oxygen sensor is built to Delphi's OE standards.
Before you replace this sensor, rule out a damaged connector or an exhaust leak near it. A check engine light, rising fuel use or a rough idle can mean the sensor is worn.
It fits the 1998-1999 Subaru Forester H4 2.5L and the 1998-1999 Subaru Impreza H4 2.2L or 2.5L, and it is also an oxygen sensor for the 1996-1999 Subaru Legacy H4 2.2L or 2.5L.
Fit and size
Build and materials
One oxygen sensor and one instruction sheet. This listing holds a single sensor, and the vehicle takes one.
Interchange: 156-4031 · 234-3091 · 138-370 · 138-574 · 250-23091
22690 AA290 · 22690 AA350 · 2131277 · 2131280 · OS986 · 13036 · 13702 · 226A10W011 · 24523 · REA1100 · REA1130 · SG192 · SG712 · SU4682 · SU4685
This part cross-references / interchanges with the following part numbers:
Is this the right oxygen sensor for the 1998-1999 Subaru Forester H4 2.5L?
Yes. The Delphi ES10590 front oxygen sensor fits the 1998-1999 Subaru Forester H4 2.5L, and that application takes one sensor.
Is this oxygen sensor right for the 1998-1999 Subaru Impreza H4 2.2L or 2.5L?
Yes. Delphi ES10590 fits the 1998-1999 Subaru Impreza with either the H4 2.2L or the H4 2.5L engine.
Are Delphi O2 sensors like this one validated for E85 fuel?
Yes. This Delphi ES10590 sensor is validated for all fuel types, including ethanol blends like E85.
Does this front oxygen sensor come with instructions?
Yes. The box holds one oxygen sensor and one instruction sheet.
How is this oxygen sensor tested?
It is tested to 150,000 miles, plus 2,000 hours of severe thermal testing. A patented protective coating on the sensor helps prevent contamination.
No reviews yet — be the first to review this product.
Write a ReviewWARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.