BOSCH 73WRNR42 Downstream Oxygen Sensor

( Brand: Bosch ), ( Manufacturer Part Number: 73WRNR42 ), ( Type: Oxygen Sensor ), ( Placement On Vehicle: Downstream ), ( Fits 1: 1997-1999 Acura Cl ), ( Fits 2: 1999 Acura Tl ), ( 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 CL TL 1997–1999

Bosch 73WRNR42 Downstream Oxygen Sensor for Acura CL, TL (1997-1999, 1998)

The Bosch 73WRNR42 is a vital automotive component designed for use in the downstream position of the oxygen sensor system on select Acura models including the CL and TL from the years 1997 to 1999 and 1998. This oxygen sensor plays an essential role in maintaining optimal engine performance by measuring the amount of unburnt oxygen present in the exhaust gases, ensuring the correct air-fuel mixture for efficient combustion.

Bosch, a renowned global technology leader, manufactures this oxygen sensor with the utmost precision and attention to detail. The sensor's advanced zirconia technology allows for rapid response to changing exhaust gas conditions, providing real-time data to the vehicle's engine control unit (ECU) for adjustments to fuel mixtures and ignition timing, ultimately improving fuel efficiency and reducing harmful emissions.

The Bosch 73WRNR42 is engineered to withstand the harsh conditions of the exhaust system, featuring a robust ceramic element shielded within a corrosion-resistant housing. This sensor's long-lasting durability guarantees reliable operation even in the face of high temperatures and potentially corrosive exhaust gases.

- Advanced zirconia technology for rapid response and accurate oxygen measurement

- Corrosion-resistant housing for durability in harsh exhaust conditions

- Designed for use in the downstream position of the oxygen sensor system

- Compatibility with Acura CL and TL models from 1997 to 1999 and 1998

In conclusion, the Bosch 73WRNR42 downstream oxygen sensor is an essential upgrade for Acura CL and TL owners seeking improved engine performance, enhanced fuel efficiency, and reduced harmful emissions. With its advanced zirconia technology, corrosion-resistant housing, and compatibility with select Acura models, this Bosch sensor ensures optimal exhaust gas measurement and contributes to a smoother, more efficient driving experience.

The Bosch 73WRNR42 downstream oxygen sensor is a crucial component of the emissions system in certain Acura CL and TL models from the years 1997 to 1999. Replacing a faulty oxygen sensor can help improve the vehicle's fuel efficiency, reduce exhaust emissions, and ensure proper engine performance. Here are some pros and cons of buying this particular sensor.

1. OEM Part: This sensor is an original equipment manufacturer (OEM) part, meaning it's the same component that was installed on your Acura when it was new.

2. Fits Specific Models: It is specifically designed for the 1997 to 1999 Acura CL and TL models, ensuring a perfect fit.

3. Improves Engine Performance: A faulty oxygen sensor can cause poor engine performance, misfires, and decreased fuel efficiency. Replacing it with a new one can help restore optimal engine function.

4. Reduces Emissions: A malfunctioning oxygen sensor can lead to increased exhaust emissions, which can negatively impact the environment and potentially lead to emissions-related fines.

5. Bosch Quality: Bosch is a renowned automotive parts manufacturer known for its high-quality products.

1. Cost: Bosch is a premium brand, and their parts may be more expensive than aftermarket alternatives.

2. Availability: Since this is an OEM part, it might not be as readily available as aftermarket sensors from various manufacturers.

3. Installation: Installing the sensor requires some mechanical knowledge and the appropriate tools. If you're not comfortable doing it yourself, consider taking it to a professional.

In conclusion, the Bosch 73WRNR42 downstream oxygen sensor for Acura CL and TL models from 1997 to 1999 is a high-quality, OEM component that can help restore optimal engine performance, reduce emissions, and improve fuel efficiency. However, it comes with a higher price tag than aftermarket alternatives and might not be as readily available. Ultimately, if you prioritize OEM parts and want to ensure a precise fit, the Bosch sensor is an excellent choice. If you're budget-conscious or prefer to have a replacement on hand for emergencies, an aftermarket sensor may be a more suitable option.

Details:

Downstream Oxygen Sensor Bosch 73WRNR42 for Acura CL TL 1999 1997 1998: Position: Brand: condition: New, Notes OE Quality Features: Premium oxygen sensors are designed to improve fuel economy while reducing harmful emissions. Recommend to use OTC 6500 Flexed O2 Sensor Wrench. Detailed Applications Vehicle Engine, 1998 - 1999 Acura CL2.3L 4 Cl, 1997 - 1999 CL3.0L V6, 1997 CL2.2L Cl. Performance meets or exceeds OE specifications.

Oxygen Sensor Type: Narrow-band heated. Heated Oxygen Sensor: Yes. True Direct-fit OE connectors and harness. Direct Fit includes OE Connector for easy installation.

part #: 73wrnr42 price

• $56.15

specifications acrasensor:

• for models: Cl, Tl
• for makes: Acura
• for years: 1997-1999
• brand: Bosch
• mpn: 73wrnr42
• type: Oxygen Sensor
• placement on vehicle: Downstream
• fits 1: 1997-1999 Acura Cl
• fits 2: 1999 Acura Tl
• 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
• paid by: Seller
• policy: Returns Accepted

seller acrasensor:

• rating: 91.0%
• # reviews: 52768
• city: Tempe, Arizona

payments acrasensor:

• wallet: Apple-pay
• credit card: Mastercard
• other

offer acrasensor:

• started: October 10, 2025
• options: Ship-to-home
• quantity: 1
• sold: 0
• availability: In Stock

shipping acrasensor:

• transit: 5-8 Days
• cost: $0.00
• class: Standard
• type: Fixed
• service: Standard

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