NTK 25652 Oxygen Sensor - Downstream or Upstream
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NTK
 Direct Fit Oxygen Sensor

NTK 25652 Oxygen Sensor - Downstream or Upstream

Brand NTK 25652
Position Upstream and Downstream
Wiring Harness Length 15.7500
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 Porsche · 24 vehicles

Direct fit design. Application-specific replacement for supported oxygen sensor installations.

Heated 4-wire sensor. Built for faster response with a threaded mounting style.

OE-focused engineering. NTK tests sensors during manufacturing to meet or exceed OE specifications.

Cross-references Bosch 15182, Bosch 15183 and DENSO Auto Parts 234-4269 for the same application. See all 8.

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Direct Fit Oxygen Sensor for Porsche Boxster

Restore accurate exhaust feedback with this NTK direct fit oxygen sensor, part number 25652. It is a specific-fit, heated sensor built with a threaded mounting design and a 4-wire harness for straightforward replacement on supported Porsche Boxster applications.

Key Features

  • Direct fit oxygen sensor for specific applications
  • Heated sensor design for faster operating response
  • 4-wire configuration with 15.75-inch harness length
  • Threaded mounting type with 18 mm thread diameter
  • OE-equivalent design for supported Porsche Boxster fitments

Detailed Description

NTK 25652 is part of the Direct Fit Oxygen Sensor line, built for import and domestic coverage with application-specific fitment. For Porsche Boxster models from 2000-2002, this sensor is listed for upstream and downstream positions, with notes identifying the exact bank and catalyst location for each application. The direct-fit design supports a clean replacement path without adapting the connector or mounting style on the listed vehicles.

NTK is known for oxygen sensor manufacturing and uses ceramic-focused production technology to control the sensor from raw material through finished product. This part cross-references Bosch (e.g., 15182, 15183) for the same application.

What It Is Used For

  • Replacing a worn or slow-responding oxygen sensor
  • Addressing check engine light concerns related to exhaust oxygen readings
  • Restoring proper air-fuel feedback to the engine control system
  • Correcting sensor faults tied to heater circuit or signal performance
  • Maintaining OE-style exhaust monitoring on Porsche Boxster applications

Installation Notes and Tips

Verify the exact position before ordering, since this part is listed for both upstream and downstream locations on 2000-2002 Porsche Boxster applications. Confirm the connector, thread size, and harness length against the original sensor before installation. Use the fitment notes to match the correct bank and catalyst location for your vehicle.

Quality Assurance

NTK states that its oxygen sensors are extensively tested during manufacturing to meet or exceed OE specifications. The brand also supplies original equipment oxygen sensors and supports application-specific coverage for current and legacy vehicles.

Related reading

This part fits 24 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2002PorscheBoxster3.2LH6UpstreamLocated Before RH Primary (Manifold) Catalyst; B1S1; OE Equivalent Design; Direct Fit Oxygen Sensor
2002PorscheBoxster3.2LH6UpstreamLocated Before LH Primary (Manifold) Catalyst; B2S1; OE Equivalent Design; Direct Fit Oxygen Sensor
2002PorscheBoxster3.2LH6DownstreamLocated After RH Primary (Manifold) Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2002PorscheBoxster3.2LH6DownstreamLocated After LH Primary (Manifold) Catalyst; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2002PorscheBoxster2.7LH6UpstreamLocated Before LH Primary (Manifold) Catalyst; B2S1; OE Equivalent Design; Direct Fit Oxygen Sensor
2002PorscheBoxster2.7LH6UpstreamLocated Before RH Primary (Manifold) Catalyst; B1S1; OE Equivalent Design; Direct Fit Oxygen Sensor
2002PorscheBoxster2.7LH6DownstreamLocated After LH Primary (Manifold) Catalyst; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2002PorscheBoxster2.7LH6DownstreamLocated After RH Primary (Manifold) Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2001PorscheBoxster3.2LH6UpstreamLocated Before RH Primary (Manifold) Catalyst; B1S1; OE Equivalent Design; Direct Fit Oxygen Sensor
2001PorscheBoxster3.2LH6UpstreamLocated Before LH Primary (Manifold) Catalyst; B2S1; OE Equivalent Design; Direct Fit Oxygen Sensor
2001PorscheBoxster3.2LH6DownstreamLocated After RH Primary (Manifold) Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2001PorscheBoxster3.2LH6DownstreamLocated After LH Primary (Manifold) Catalyst; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2001PorscheBoxster2.7LH6UpstreamLocated Before RH Primary (Manifold) Catalyst; B1S1; OE Equivalent Design; Direct Fit Oxygen Sensor
2001PorscheBoxster2.7LH6UpstreamLocated Before LH Primary (Manifold) Catalyst; B2S1; OE Equivalent Design; Direct Fit Oxygen Sensor
2001PorscheBoxster2.7LH6DownstreamLocated After RH Primary (Manifold) Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2001PorscheBoxster2.7LH6DownstreamLocated After LH Primary (Manifold) Catalyst; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2000PorscheBoxster3.2LH6UpstreamLocated Before RH Primary (Manifold) Catalyst; B1S1; OE Equivalent Design; Direct Fit Oxygen Sensor
2000PorscheBoxster3.2LH6UpstreamLocated Before LH Primary (Manifold) Catalyst; B2S1; OE Equivalent Design; Direct Fit Oxygen Sensor
2000PorscheBoxster3.2LH6DownstreamLocated After RH Primary (Manifold) Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2000PorscheBoxster3.2LH6DownstreamLocated After LH Primary (Manifold) Catalyst; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2000PorscheBoxster2.7LH6UpstreamLocated Before RH Primary (Manifold) Catalyst; B1S1; OE Equivalent Design; Direct Fit Oxygen Sensor
2000PorscheBoxster2.7LH6UpstreamLocated Before LH Primary (Manifold) Catalyst; B2S1; OE Equivalent Design; Direct Fit Oxygen Sensor
2000PorscheBoxster2.7LH6DownstreamLocated After RH Primary (Manifold) Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2000PorscheBoxster2.7LH6DownstreamLocated After LH Primary (Manifold) Catalyst; B2S2; 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 — 15182Bosch — 15183DENSO Auto Parts — 234-4269DENSO Auto Parts — 234-427175-322875-32299866061270198660612801