O2 Oxygen Sensor; Downstream (98-99 Impreza w/o California Emissions)Find parts that fit my vehicle

About this item
Reference Numbers: 250-23091; 0009051400; 22690AA290; 22690AA350; 156-4031; 19060047; 213-1280; 234-3091; ES10590; FE6303; FE8809; SG192; SG712; SU4682; SU4685
YOUR TRUSTED DIY VIDEO SOURCE: TRQ offers the largest catalog of DIY videos for replacement parts, making installation easier and repairs more accessible. Our mission is to help you "View Before You Do," with hundreds of new videos added weekly.
TRUST & COMPATIBILITY: For over 25 years, TRQ has been the premium choice for direct-fit replacement parts. Confirm fitment with the Amazon Garage "confirmed fit" feature and review our full compatibility chart below before purchase.
EASE OF INSTALLATION: Save time and effort with pre-assembled components designed as direct replacements for the original equipment, ensuring precise fit and eliminating the need for modifications.

Product Description
O2 Oxygen Sensor

Fitment
Subaru Forester
1998-99 - H4 2.5L Upstream Bank 1 Sensor 1
Subaru Impreza
1998 - H4 2.2L Downstream Bank 1 Sensor 2
1998-99 - H4 2.5L Upstream Bank 1 Sensor 1
1999 - H4 2.2L excluding California Emissions Upstream Bank 1 Sensor 1
Subaru Legacy
1996-98 - H4 2.2L Upstream Bank 1 Sensor 1
1996-99 - H4 2.5L Upstream Bank 1 Sensor 1
1999 - H4 2.2L excluding California Emissions Upstream Bank 1 Sensor 1

Product Attributes
Thread Diameter: 0.71 in
Wrench Size: 0.87 in
Wiring Harness Length: 14.57 in
Thread Diameter: 18 mm
Overall Length: 18.9 in
Wrench Size: 22 mm
Wire Quantity: 3
Terminal Quantity: 3
Wiring Harness Length: 370 mm
Overall Length: 480 mm
Connector Gender: Female
Terminal Gender: Female
Thread Size: M18x1.5-6e
Sensor Type: Narrow-Band
Terminal Type: Pressure Contact
Universal Or Specific Fit: Specific
Grade Type: Standard Replacement
Mounting Type: Threaded
Connector Shape: Triangle
Heated: Yes
Features & Benefits: Quality Tested - built to a strict level of product standards.
Sensor Design: Thimble

Product Features
Application Specific Design: No modifications and pre-calibrated
Isotatic-pressed and plasma-sprayed for extended service life
Double-Layered 310S Stainless Steel: Additional protection from moisture and debris
Restored Engine Performance: Improved fuel economy and lower emissions

Item Details
TRQ oxygen sensors are manufactured to precise specifications using premium raw materials to optimize your vehicle’s emission system. Each sensor is isostatically-pressed for improved strength and durability, and plasma-sprayed to improve sensitivity and prolong the service life of the sensors. Oxygen sensors wear out over time and should be replaced every 60,000 miles to prevent poor engine performance. TRQ recommends replacing the oxygen sensors in sets to optimize fuel economy and reduce overall emissions. All products are fit and road-tested in our Massachusetts R&D facility to ensure we deliver on our promise of Trusted Reliable Quality.

What's in the box
O2 Oxygen Sensor

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov