1. Acura Sensors For Sale
  2. sku: 6112001169548604
  3. API 42571XQFB

API 42571XQFB Air Fuel Level Sensor Upstream

fits model: Tsx. make: Acura. year: 2004–2008.

42571xqfb Api For 2004-2008 Acura Tsx Air Fuel Ratio Sensor Upstream 2006 2005

( Brand: Api ), ( Manufacturer Part Number: 42571XQFB ), ( Part Type: Fuel Sensor ), ( Placement On Vehicle: Upstream ), ( Manufacturer Warranty: 12 Month Warranty ), ( Notes: Air / Fuel Ratio Sensor ), ( Years: 2004 2006 2008 2005 2007 ), ( Application: Acura Tsx Air Fuel Ratio Sensor ), ( Cs-sku: 400 )

Review API Acura Air Fuel Ratio Sensor Upstream fits TSX 2004–2008

The API 42571XQFB is a high-performance Upstream Air Fuel Ratio Sensor designed specifically for the 2004-2008 Acura TSX models, with applications for both the 2005 and 2006 versions. This sensor plays a crucial role in maintaining optimal engine performance and emissions control.

The unit is built with state-of-the-art zirconia technology, which ensures accurate and reliable readings of the air-fuel mixture entering the engine. This technology allows the engine control unit (ECU) to adjust fuel delivery and air intake to maintain the ideal air-fuel ratio for optimal combustion efficiency.

The sensor housing is robustly constructed with a heat-resistant ceramic material, making it capable of withstanding the extreme temperatures and harsh engine environment. The sensor tip is protected by a durable, corrosion-resistant plating that prevents damage from contaminants and extends the sensor's lifespan.

This sensor is a direct fit replacement for the original equipment, ensuring seamless installation and hassle-free operation. The sensor comes with a comprehensive installation guide, detailing the steps required to remove the old sensor and install the new one.

The API 42571XQFB is OEM-quality and meets or exceeds the specifications of the original sensor. By using this sensor, you can improve engine efficiency, reduce emissions, and restore the optimal performance of your Acura TSX.

In summary, the API 42571XQFB is a precision-engineered Upstream Air Fuel Ratio Sensor designed specifically for the 2004-2008 Acura TSX models. Its advanced zirconia technology ensures accurate readings, while its robust construction and durability make it a reliable and long-lasting replacement for the original sensor.

Pros and Cons of Buying an API 42571XQFB Air Fuel Sensor for a 2004-2008 Acura TSX (2006, 2005 models)

Introduction:

The API 42571XQFB Air Fuel Ratio (AFR) sensor is a critical component in the fuel delivery system of your Acura TSX. This sensor measures the amount of air and fuel entering the engine and helps maintain the optimal AFR for efficient combustion. In this article, we will discuss the pros and cons of purchasing an API 42571XQFB Air Fuel sensor for your 2004-2008 Acura TSX (2006, 2005 models).

Pros:

1. Improved Fuel Efficiency: A faulty AFR sensor can cause your engine to run rich or lean, which can significantly impact fuel efficiency. Replacing the faulty sensor with a new one, like the API 42571XQFB, can help restore optimal fuel efficiency.

2. Enhanced Engine Performance: A good AFR sensor ensures that the engine is receiving the correct air-fuel mixture, which is crucial for optimal engine performance. Replacing a faulty sensor can help improve throttle response, power delivery, and overall engine performance.

3. Long Lasting: The API 42571XQFB Air Fuel sensor is known for its durability and long lifespan. Replacing the sensor with a new one can help prevent the need for frequent replacements, saving you time and money in the long run.

4. Easy Installation: The API 42571XQFB Air Fuel sensor is relatively easy to install, making it a popular choice for DIY enthusiasts. The installation process is straightforward, and most mechanics and enthusiasts can do it in under an hour.

Cons:

1. Cost: While the API 42571XQFB Air Fuel sensor is a reliable and long-lasting component, it can be a bit pricey compared to some aftermarket alternatives. However, the benefits of using a high-quality OEM sensor often outweigh the cost.

2. Availability: Depending on your location and the availability of parts at your local auto parts store, you may need to order the API 42571XQFB Air Fuel sensor online, which could add some time to the replacement process.

3. Requires Professional Installation: While the installation process is straightforward, some people may prefer to have a professional mechanic install the sensor to ensure that it is installed correctly and functioning optimally.

Conclusion:

In conclusion, the API 42571XQFB Air Fuel sensor offers several advantages for 2004-2008 Acura TSX (2006, 2005 models) owners, including improved fuel efficiency, enhanced engine performance, long-lasting durability, and easy installation. However, it also comes with some disadvantages, such as cost and availability. Ultimately, the decision to purchase an API 42571XQFB Air Fuel sensor depends on your budget, installation skills, and personal preferences. If you prioritize optimal engine performance and long-term savings, the OEM sensor is a worthwhile investment. However, if you're looking for a more budget-friendly alternative, you may want to consider an aftermarket sensor.

Recommendation:

If you're considering purchasing an API 42571XQFB Air Fuel sensor for your 2004-2008 Acura TSX (2006, 2005 models), it's essential to weigh the pros and cons carefully and consider your budget, installation skills, and personal preferences. If you prioritize optimal engine performance, long-term savings, and peace of mind, the API 42571XQFB Air Fuel sensor is a solid investment. However, if you're on a tight budget or prefer an aftermarket alternative, you may want to explore other options. Regardless of your choice, always ensure that you purchase the correct sensor for your specific vehicle model and year.

Details:

Parts Geek - For 2004 - 2008 Acura TSX Air Fuel Ratio Sensor Upstream API 42571XQFB 2006 2005: Review Fitment Notes to Ensure Proper Fit Position: condition: New Brand: Notes: / Wiring Harness length : 622.40 Wire Quantity: 4 Terminal Gender: female 12 Month Warranty Vehicle: Engine: TSX2.4L Cl K24A2 FI Naturally Aspirated GAS.

part #: 42571xqfb price

  • $108.06

specifications acrasensor:

  • for models: Tsx
  • for makes: Acura
  • for years: 2004-2008
  • brand: Api
  • mpn: 42571xqfb
  • part type: Fuel Sensor
  • placement on vehicle: Upstream
  • manufacturer warranty: 12 Month Warranty
  • notes: Air / Fuel Ratio Sensor
  • years: 2004 2006 2008 2005 2007
  • application: Acura Tsx Air Fuel Ratio Sensor
  • cs-sku: 400

returns acrasensor:

  • paid by: Seller
  • time: 30 Days
  • policy: Returns Accepted

general acrasensor:

  • Car Truck Parts Accessories > Air Fuel Delivery > Air Intake Fuel Sensors
  • condition: New

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shipping acrasensor:

  • cost: $0.00
  • carrier: FedEx
  • transit: 4-7 Days
  • service: FedEx Ground / FedEx Home Delivery
  • class: Standard
  • type: Fixed

seller acrasensor:

  • rating: 98.7%
  • # reviews: 327564
  • city: Norton, Massachusetts

offer acrasensor:

  • quantity: 1
  • started: April 11, 2026
  • options: Ship-to-home
  • sold: 0
  • availability: In Stock
for models: tsx, for makes: acura, for years: 2004-2008, part type: fuel sensor, placement on vehicle: upstream, manufacturer warranty: 12 month warranty, notes: air / fuel ratio sensor, years: 2004 2006 2008 2005 2007, application: acura tsx air fuel ratio sensor, cs-sku: 400,
category: auto parts > car truck parts accessories > air fuel delivery > acura air intake fuel sensors, sku: 6112001169548604,
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1 offer $108.06 USD
  • New. Offer #1 priced at $108.06 + $0.00 shipping estimate = $108.06* total. Notes: Air / Fuel Ratio Sensor 2004-2008 Acura TSX 2.4L 4 Cyl K24A2 FI Naturally Aspirated GAS.FREE SHIPPING

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