DENSO 97QQRT21 Upstream Oxygen Sensor

( Brand: Denso ), ( Manufacturer Part Number: 97QQRT21 ), ( Type: Oxygen Sensor ), ( Placement On Vehicle: Upstream ), ( Fits 1: 1997-1999 Acura Cl ), ( Fit Note: Oxygen Sensor Oe Style Denso Is The O.e. Manufacturer / D. ), ( Manufacturer Warranty: 12 Month Warranty ), ( Attention: Please Read All Notes To Confirm Fitment ), ( Cs-sku: 400 )

Review DENSO Upstream Oxygen Sensor Acura fits CL 1997–1999

The Denso 97qqrt21 Upstream Oxygen Sensor is a crucial component in the emission control system of your 1997, 1998, or 1999 Acura CL. This sensor is responsible for monitoring the amount of unburnt oxygen in your vehicle's exhaust gases and providing real-time feedback to the engine management system.

This particular sensor, manufactured by Denso, a leading global automotive technology, manufacturing, and supplier company, is designed to provide accurate and reliable readings. The 97qqrt21 is an upstream oxygen sensor, meaning it is located closer to the engine and measures the oxygen content in the exhaust gases before they enter the catalytic converter. This information is essential for the engine management system to optimize the fuel-air mixture for efficient combustion and reduced emissions.

The Denso 97qqrt21 Upstream Oxygen Sensor is a heated zirconia sensor. Zirconia is a material known for its excellent oxygen sensing properties. The heating element in the sensor helps ensure a consistent operating temperature, even in cold weather conditions. This ensures the sensor's accuracy and stability, providing reliable feedback to the engine management system.

The sensor features a two-wire design, making it easy to install and replace. The two wires connect the sensor to the engine management system, allowing for real-time communication between the sensor and the engine computer. The sensor's body is made of high-temperature, corrosion-resistant materials, ensuring longevity and durability.

When it comes to maintaining your Acura CL's emission control system, a faulty oxygen sensor can lead to a number of issues, including poor fuel economy, reduced engine performance, and increased emissions. Replacing the sensor with a high-quality, reliable option like the Denso 97qqrt21 can help restore optimal performance and ensure your vehicle is running efficiently and effectively.

In summary, the Denso 97qqrt21 Upstream Oxygen Sensor is a vital component in the emission control system of your 1997, 1998, or 1999 Acura CL. Its accurate and reliable readings help optimize the fuel-air mixture for efficient combustion and reduced emissions. The heated zirconia sensor's two-wire design, high-temperature materials, and durability make it an excellent choice for maintaining your vehicle's performance and ensuring its longevity.

Denso 97qqrt21 Upstream Oxygen Sensor for Acura CL (1997-1999): A Detailed Analysis

The Denso 97qqrt21 is a replacement upstream oxygen sensor designed for use in Acura CL models from 1997 to 1999. This sensor plays a crucial role in maintaining the vehicle's fuel efficiency and emissions control. In this analysis, we will discuss the key features, benefits, drawbacks, and a concluding recommendation.

1. OEM Quality: Denso is a well-known automotive parts manufacturer, and the 97qqrt21 oxygen sensor is an original equipment manufacturer (OEM) replacement. This ensures a perfect fit and reliable performance.

2. Enhanced Fuel Efficiency: The oxygen sensor measures the amount of unburnt oxygen in the exhaust gases and adjusts the fuel mixture accordingly, improving fuel efficiency and reducing emissions.

3. Improved Engine Performance: By maintaining the optimal air-fuel ratio, the oxygen sensor ensures that the engine runs efficiently and smoothly.

4. Longer Service Life: Denso uses advanced technology and high-quality materials in the manufacturing process, resulting in a longer service life compared to aftermarket alternatives.

1. Cost: Denso oxygen sensors, like the 97qqrt21, can be more expensive than aftermarket alternatives. However, the investment in OEM quality and performance may outweigh the cost difference in the long run.

2. Availability: Depending on the location and availability, Denso sensors may not be readily available at every auto parts store or online retailer. It is essential to check with a reliable supplier or the dealership to ensure availability.

The Denso 97qqrt21 upstream oxygen sensor for Acura CL (1997-1999) is an excellent investment for those seeking reliable, high-performance, and long-lasting replacement parts. Its OEM quality, enhanced fuel efficiency, improved engine performance, and longer service life make it a worthwhile choice. However, the higher cost compared to aftermarket alternatives may deter some buyers. Ultimately, the decision to purchase the Denso 97qqrt21 depends on the individual's priority for performance, reliability, and cost.

If you prioritize performance, reliability, and a long service life, the Denso 97qqrt21 upstream oxygen sensor for Acura CL (1997-1999) is an excellent choice. It may be more expensive than aftermarket alternatives, but the investment in OEM quality and performance may outweigh the cost difference in the long run. It is essential to ensure availability through a reliable supplier or the dealership before making the purchase.

Details:

Detailed Applications Vehicle, 1997 - 1999 Acura CL. Upstream Oxygen Sensor Denso 97QQRT21 for Acura CL 1997 1998 1999: Position: Brand: condition: New, Notes - OE DENSO is.E. Product Specifications Wiring Harness length :9.25 in, Sensor Type:Narrow-Band, Universal Or Specific Fit:Specific, Wire Quantity:4. Constructed from high quality material.

Manufacturer / Direct Fit Oxygen Sensor; OE Features: designed to detect the amount of oxygen in exhaust system. Features double protection layer, aluminum oxide trap PTFE filter and stainless steel housing. Easy installation. Manufactured with precision to meet OE standards.

part #: 97qqrt21 prices

• $52.16-$58.84

specifications acrasensor:

• for models: Cl
• for makes: Acura
• for years: 1997-1999
• brand: Denso
• mpn: 97qqrt21
• type: Oxygen Sensor
• placement on vehicle: Upstream
• fits 1: 1997-1999 Acura Cl
• fit note: Oxygen Sensor Oe Style Denso Is The O.e. Manufacturer / D.
• manufacturer warranty: 12 Month Warranty
• attention: Please Read All Notes To Confirm Fitment
• cs-sku: 400

general acrasensor:

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

seller acrasensor:

• city: Mesa, Arizona
• rating: 91.0%
• # reviews: 52770

payments acrasensor:

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

offer acrasensor:

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

returns acrasensor:

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

shipping acrasensor:

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

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