NTK 25538 Oxygen Sensor - Downstream, Downstream Left or Downstream Right
OE Quality 60-Day Returns
NTK
 Direct Fit Oxygen Sensor

NTK 25538 Oxygen Sensor - Downstream, Downstream Left or Downstream Right

Brand NTK 25538
Position Downstream, Downstream Right, and Downstream Left
Wiring Harness Length 80.7500
Sensor Type Heated
Universal Or Specific Fit Specific
Wire Quantity 4
Thread Diameter 18.000
Mounting Type Threaded
Product line Direct Fit Oxygen Sensor
Fits Saab and Volvo · 13 vehicles

Direct fit design. Specific-fit replacement with OE-style form and function.

Heated sensor. Supports faster operating response after startup.

OE-tested quality. Manufactured and tested to meet or exceed OE specifications.

Cross-references Bosch 15062, Carlson 13335 and Carlson 13594 for the same application. See all 19.

$95.70Free shipping
In stock · usually ships same day before 1pm CST
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Order total $95.70
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Free returns within 60 days if it doesn't fit when fitment is verified.
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Direct Fit Oxygen Sensor Overview

The NTK 25538 is a direct fit heated oxygen sensor built for specific applications with threaded mounting and a 4-wire design. It is engineered for accurate exhaust feedback and OE-style fitment in import applications, including Volvo S70, Volvo V70, Saab 900, and Volvo 850 coverage.

Key Features

  • Direct fit oxygen sensor for specific applications
  • Heated sensor design for faster operating response
  • 4-wire configuration with threaded mounting
  • 18 mm thread diameter
  • 80.75 in. wiring harness length
  • NTK 25538 is part of the Direct Fit Oxygen Sensor line

Detailed Application Notes

NTK builds oxygen sensors with OE application technology and extensive manufacturing testing to support fit, form, and function. This sensor is a threaded, heated replacement that matches the original style used in downstream applications on the Volvo S70, Volvo V70, Saab 900, and Volvo 850. The NTK 25538 is intended for buyers seeking a specific-fit oxygen sensor with the correct connector and harness length for the listed applications.

This part cross-references Bosch 15062 and DENSO Auto Parts 234-4181 for the same application.

What This Part Helps Address

  • Fault codes related to oxygen sensor performance
  • Slow sensor response after warm-up
  • Incorrect exhaust feedback to the engine control system
  • Replacement needs for worn or aging downstream sensors

Installation Notes and Quality

Verify the thread diameter, wire count, harness length, and downstream position before installation. Use the fitment notes to confirm the correct left, right, or downstream application for the vehicle. NTK states that these oxygen sensors are extensively tested during manufacturing to meet or exceed OE specifications.

Related reading

This part fits 13 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1998VolvoS702.4LL5DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
1998VolvoV702.4LL5DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
1997Saab9002.5LV6Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
1997Saab9002.5LV6Downstream LeftOxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor
1997Volvo8502.4LL5DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
1997Volvo8502.3LL5DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
1996Saab9002.5LV6Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
1996Saab9002.5LV6Downstream LeftOxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor
1996Volvo8502.4LL5DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
1996Volvo8502.3LL5DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
1995Volvo8502.4LL5DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
1995Volvo8502.3LL5DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
1994Volvo8502.3LL5DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
Directly replaces or cross-references 19 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bosch — 15062Carlson — 13335Carlson — 13594Carlson — 15235Carlson — 15261Delphi — ES10962DENSO Auto Parts — 234-4181DENSO Auto Parts — 234-468975-160075-323575-3238213-1353234-4183466019746602059202720OS614SG125SG1712