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LABWORK 2Pcs Oxygen O2 02 Sensor Upstream&Downstream For Ford Focus 2000-04 2.0L

LABWORK 2Pcs Oxygen O2 02 Sensor Upstream&Downstream For Ford Focus 2000-04 2.0L is a direct-fit replacement pair of 4-wire O2 sensors. Priced at $28.95, it maintains engine efficiency and reduces emissions in 2.0L Ford Focus models from 2000–2004.

$28.95

● In stock

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Key features

  • Direct-fit replacement for 2.0L Ford Focus 2000-04
  • Includes upstream and downstream O2 sensors
  • 4-wire design with factory plug connectors
  • No splicing or modifications required
  • Brand new, not remanufactured
  • Compatible with Ford, Mercury, and Contour 2.0L
  • Affordable under $30 full set

Pros

  • +Low price for a complete sensor pair
  • +Easy plug-and-play installation
  • +Fits multiple 2.0L Ford and Mercury models
  • +Eliminates check engine light issues
  • +New construction ensures reliability
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Cons

  • Not designed for high-performance tuning
  • Longevity may not match premium brands

About LABWORK 2Pcs Oxygen O2 02 Sensor Upstream&Downstream For Ford Focus 2000-04 2.0L

What is LABWORK 2Pcs Oxygen O2 02 Sensor Upstream&Downstream For Ford Focus 2000-04 2.0L?

This OEM-replacement oxygen sensor set includes one upstream and one downstream sensor designed specifically for 2.0L Ford Focus models from 2000 to 2004. These sensors monitor exhaust oxygen levels to help the engine control unit optimize fuel mixture, improve fuel economy, and reduce harmful emissions. As a brand-new direct plug-in solution, it ensures fast installation without modifications.

Key features

  • Direct Fit — Designed for seamless replacement on 2.0L Ford Focus, Contour, and Mercury models 2000–2004.
  • 4-Wire Configuration — Matches factory specs for reliable signal transmission and heater circuit performance.
  • Upstream & Downstream Pair — Complete set for both pre- and post-catalytic converter monitoring.
  • Plug-and-Play — Factory-style connectors eliminate splicing for quick DIY installation.
  • Brand New Construction — Not remanufactured; ensures long-term reliability and accurate readings.
  • Wide Compatibility — Also fits 2.0L Mercury Cougar, Mystique, and Ford Contour variants.
  • Cost-Effective — Full set under $30, offering significant savings over dealership parts.

Who is LABWORK 2Pcs Oxygen O2 02 Sensor Upstream&Downstream For Ford Focus 2000-04 2.0L for?

DIY mechanics maintaining 2.0L Ford Focus models from 2000–2004 will benefit most from this sensor set. It’s ideal for those replacing failed sensors triggering a check engine light or upgrading worn components during routine maintenance. Home garages and budget-conscious drivers seeking reliable performance without dealer pricing will find this a smart choice.

How does LABWORK 2Pcs Oxygen O2 02 Sensor Upstream&Downstream For Ford Focus 2000-04 2.0L compare?

Compared to pricier OEM sensors from dealers, this LABWORK set delivers identical fit and function at a fraction of the cost. Unlike universal sensors requiring wire cutting and soldering, these are direct replacements with factory connectors. While not as durable as high-end aftermarket brands like Denso or Bosch in extreme conditions, they offer solid performance for standard driving and emissions compliance.

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Best use cases

  • Replacing failed O2 sensors in 2000-04 Focus
  • Fixing P0135, P0141, or similar O2 codes
  • Routine maintenance on 2.0L SOHC engines
  • Passing emissions testing
  • Upgrading worn factory sensors
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Is LABWORK 2Pcs Oxygen O2 02 Sensor Upstream&Downstream For Ford Focus 2000-04 2.0L right for you?

This LABWORK O2 sensor set is ideal for DIYers with a 2.0L Ford Focus, Contour, or Mercury model from 2000–2004. No advanced tools needed—just basic wrenches and safety gear. If you're seeing poor fuel economy or a check engine light, these sensors are a logical fix. For heavier-duty use, consider Denso or Bosch, but for standard repair, this set offers excellent value.

How it compares: Compared to universal O2 sensors, this LABWORK pair offers plug-and-play ease without wire cutting. It matches OEM fit at lower cost, though it may not last as long as premium branded sensors under extreme heat or mileage.

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Frequently Asked Questions

What vehicles does this O2 sensor fit?

This set fits 2.0L Ford Focus (2000–2004), Ford Contour, Mercury Cougar, and Mercury Mystique. Both upstream and downstream positions are covered with direct-fit connectors.

Does this require any wiring modifications?

No. These are direct plug-in replacements with factory-style 4-wire connectors. No splicing, cutting, or adapters are needed for installation.

How do I know if I need upstream or downstream sensors?

Upstream sensors monitor exhaust before the catalytic converter; downstream monitors after. If you have emissions issues or check engine codes, both may need replacement.

Is this sensor new or remanufactured?

This is a brand-new oxygen sensor set. It is not rebuilt or recycled, ensuring reliable performance and accurate oxygen readings from the start.

Can I install these sensors myself?

Yes. With basic hand tools and safety precautions, most DIYers can replace both sensors in under an hour. No special programming or calibration is required.

How much does LABWORK 2Pcs Oxygen O2 02 Sensor Upstream&Downstream For Ford Focus 2000-04 2.0L cost?

LABWORK 2Pcs Oxygen O2 02 Sensor Upstream&Downstream For Ford Focus 2000-04 2.0L is $28.95 at Lab Work Auto. Prices may change — click through to Lab Work Auto for the latest.

Is LABWORK 2Pcs Oxygen O2 02 Sensor Upstream&Downstream For Ford Focus 2000-04 2.0L in stock at Lab Work Auto?

Yes, LABWORK 2Pcs Oxygen O2 02 Sensor Upstream&Downstream For Ford Focus 2000-04 2.0L is currently in stock at Lab Work Auto.

Specifications

SKU
F7-8054
Last updated May 14, 2026