BOSCH 54YRDK78 Downstream Oxygen Sensor

( Brand: Bosch ), ( Manufacturer Part Number: 54YRDK78 ), ( Type: Oxygen Sensor ), ( Placement On Vehicle: Downstream ), ( Fits 1: 2004-2008 Acura Tsx ), ( Fit Note: Oe Quality Oxygen Sensor ), ( Manufacturer Warranty: 12 Month Warranty ), ( Attention: Please Read All Notes To Confirm Fitment ), ( Cs-sku: 400 )

Review BOSCH Downstream Oxygen Sensor Acura fits TSX 2004–2008

The Bosch 54yrdk78 Downstream Oxygen Sensor is a crucial component of the exhaust gas recirculation (EGR) system in select AcuraTSX models from the years 2004 to 2008 and 2005 to 2007. This sensor plays a vital role in ensuring optimal engine performance and fuel efficiency by accurately measuring the amount of unburnt oxygen present in the exhaust gases.

This Bosch oxygen sensor is designed to be a downstream type, meaning it is installed after the catalytic converter in the exhaust system. Its robust zirconia sensor element is capable of detecting even the smallest variations in oxygen levels, providing real-time feedback to the engine control unit (ECU). This information is then used to adjust the fuel-air mixture for more complete combustion and reduced emissions.

The Bosch 54yrdk78 Oxygen Sensor features a compact, hexagonal design with an integrated heater element. This heater helps the sensor reach its operating temperature more quickly, ensuring accurate readings from the very beginning of the engine's operation. The sensor also includes a heat shield, which helps to maintain its temperature stability and prolong its lifespan.

The Bosch 54yrdk78 Downstream Oxygen Sensor is engineered to meet or exceed OEM specifications, ensuring reliable and consistent performance. It is also designed with a durable, corrosion-resistant ceramic body and a high-temperature electrical connection for added durability and longevity.

Replacing a faulty oxygen sensor with a new Bosch 54yrdk78 Downstream Oxygen Sensor can help improve engine performance, reduce emissions, and potentially increase fuel efficiency. This sensor is an essential investment for any AcuraTSX owner looking to maintain their vehicle's optimal driving experience.

Bosch 54yrdk78 Downstream Oxygen Sensor for Acura Tsx (2004-2008 & 2005-2007): A Detailed Analysis

The Bosch 54yrdk78 Downstream Oxygen Sensor is a crucial component for maintaining the optimal fuel-air mixture in the exhaust system of Acura Tsx vehicles produced between 2004 and 2008, as well as 2005 and 2007. In this analysis, we will discuss the key advantages and disadvantages of purchasing this particular oxygen sensor for your Acura Tsx.

1. OEM Compatibility: The Bosch 54yrdk78 oxygen sensor is designed as an original equipment manufacturer (OEM) replacement part, ensuring a perfect fit for your Acura Tsx and maintaining the vehicle's factory specifications.

2. Superior Sensing Technology: Bosch is a renowned brand for producing high-quality sensors, and this oxygen sensor is no exception. It offers precise and reliable oxygen level measurement, which can lead to better fuel efficiency and improved engine performance.

3. Enhanced Durability: Bosch's advanced manufacturing processes result in a sensor with superior durability. It can withstand the harsh conditions of the exhaust system while delivering consistent performance.

4. Improved Emission Control: By providing accurate oxygen level readings, the Bosch 54yrdk78 oxygen sensor ensures that your Acura Tsx's emission control system functions efficiently. This not only benefits the environment but also helps maintain the longevity of the catalytic converter.

1. Cost: The Bosch 54yrdk78 oxygen sensor is a premium replacement part, and its price might be higher compared to aftermarket alternatives. However, the superior quality and reliability offered by Bosch may justify the added cost for some consumers.

2. Installation Complexity: The downstream oxygen sensor is located in the exhaust system, which can be an intricate and time-consuming process to access. Therefore, some vehicle owners may prefer to have a professional mechanic install the sensor for them.

In conclusion, the Bosch 54yrdk78 Downstream Oxygen Sensor for Acura Tsx (2004-2008 & 2005-2007) offers several advantages, including OEM compatibility, superior sensing technology, enhanced durability, and improved emission control. However, it also comes with some disadvantages, such as a higher cost and installation complexity. Ultimately, the decision to purchase this oxygen sensor depends on your budget, technical expertise, and preference for OEM parts. If you prioritize reliability, precision, and a perfect fit for your Acura Tsx, the Bosch 54yrdk78 oxygen sensor is an excellent choice. However, if you are budget-conscious and comfortable with aftermarket alternatives, you may consider exploring other options.

For Acura Tsx owners looking for a high-quality, reliable, and precision oxygen sensor, the Bosch 54yrdk78 Downstream Oxygen Sensor is our top recommendation. Its OEM compatibility, advanced sensing technology, durability, and improved emission control make it an excellent investment for maintaining the optimal performance and longevity of your Acura Tsx.

Details:

Performance meets or exceeds OE specifications. FAST RESPONSE - Bosch Switching-Type Oxygen O2 sensors reach operating temperature in. Downstream Oxygen Sensor Bosch 54YRDK78 for Acura TSX 2004 2006 2005 2008 2007: Position: Brand: condition: New, Notes OE Quality Features: Premium oxygen sensors are designed to improve fuel economy while reducing harmful emissions. Direct Fit includes OE Connector for easy installation.

part #: 54yrdk78 price

• $77.17

specifications acrasensor:

• for models: Tsx
• for makes: Acura
• for years: 2004-2008
• brand: Bosch
• mpn: 54yrdk78
• type: Oxygen Sensor
• placement on vehicle: Downstream
• fits 1: 2004-2008 Acura Tsx
• fit note: Oe Quality Oxygen Sensor
• manufacturer warranty: 12 Month Warranty
• attention: Please Read All Notes To Confirm Fitment
• cs-sku: 400

general acrasensor:

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

returns acrasensor:

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

shipping acrasensor:

• service: Standard
• class: Standard
• transit: 4-7 Days
• type: Fixed
• cost: $0.00

seller acrasensor:

• # reviews: 57692
• city: Fort Lauderdale, Florida
• rating: 97.0%

offer acrasensor:

• options: Ship-to-home
• sold: 0
• quantity: 1
• started: May 2, 2026
• availability: In Stock

payments acrasensor:

• wallet: Paypal
• credit card: Visa
• other

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