NTK 25634 Oxygen Sensor - Upstream
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NTK
 Direct Fit Oxygen Sensor

NTK 25634 Oxygen Sensor - Upstream

Brand NTK 25634
Position Upstream
Wiring Harness Length 66.7500
Sensor Type Heated
Universal Or Specific Fit Specific
Wire Quantity 3
Thread Diameter 18.000
Mounting Type Threaded
Product line Direct Fit Oxygen Sensor
Fits Volvo · 1 vehicle

Direct fit replacement. Specific-fit oxygen sensor for application-matched service.

Heated design. Helps the sensor reach operating temperature quickly.

OE supplier pedigree. NTK builds oxygen sensors with OE-level manufacturing focus.

Cross-references Bosch 13308, 75-1894 and 213-1264 for the same application. See all 8.

$130.63Free shipping
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Direct Fit Oxygen Sensor for Volvo 240

NTK 25634 is a direct fit heated oxygen sensor built for specific applications. It is engineered with a threaded mounting design and OE-style fit, form, and function for emission control service on the Volvo 240.

Key Features

  • Heated oxygen sensor for faster signal response.
  • Specific-fit design for direct replacement service.
  • Threaded mounting type for secure installation.
  • 66.75-inch wiring harness length for application-specific routing.
  • 18 mm thread diameter.

Detailed Description

NTK 25634 is part of the Direct Fit Oxygen Sensor line, a product family focused on application-specific replacement coverage. NTK draws on its OE oxygen sensor manufacturing background and ceramic technology to deliver a sensor that matches the intended fit, form, and function for emission system service. This part cross-references Bosch 13308 for the same application.

Fits 1993 Volvo 240, upstream, with B1S1 California emissions and OE equivalent design notes. For Volvo 240 emission control repair, this oxygen sensor supports accurate exhaust feedback in the specified upstream location. The NTK 25634 part number is useful when matching the correct sensor for this exact application.

What It Is Used For

  • Replacing a worn or slow-responding oxygen sensor.
  • Restoring proper exhaust feedback for engine management.
  • Addressing emissions-related fault codes tied to sensor performance.
  • Correcting drivability issues caused by inaccurate air-fuel feedback.

Installation Notes and Tips

Verify the upstream location, California emissions note, and B1S1 application before ordering. Confirm the threaded mounting style, 3-wire configuration, and harness length against the original sensor. Use the NTK 25634 part number to match the correct direct-fit replacement for the Volvo 240.

Quality Assurance

NTK is an original equipment oxygen sensor supplier with manufacturing and testing processes aimed at meeting or exceeding OE specifications. Each sensor is tested during production for quality and reliability.

Related reading

This part fits 1 vehicle
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1993Volvo2402.3LL4UpstreamB1S1; Calif. Emissions; OE Equivalent Design; Direct Fit Oxygen Sensor
Directly replaces or cross-references 8 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bosch — 1330875-1894213-1264234-31356842910ES10274OS586SG524