DELPHI 78QZFH Rear Oxygen Sensor 3.5L V6

( Brand: Delphi ), ( Manufacturer Part Number: 78QZFH ), ( Part Type: Sensor ), ( Engine: 3.5l V6 ), ( Compatible Make/model: Acura Mdx ), ( Compatible Years: 2002 2001 02 01 ), ( Position: Rear ), ( Fitment Info: Oxygen Sensor ), ( Manufacturer Warranty: 12 Month Warranty ), ( Attention: Read Full Description To Confirm Fitment ), ( Cs-sku: 400 )

Review DELPHI Rear Oxygen Sensor Acura 3.5l V6 fits MDX 2001–2002

The Delphi 78QZFH Rear Oxygen Sensor is a crucial component in the emissions system of select Acura MDX vehicles manufactured between 2001 and 2002, featuring a 3.5L V6 engine. This sensor is designed to monitor the amount of unburnt oxygen in the exhaust gases, ensuring optimal fuel-air mixture and efficient combustion. This, in turn, contributes to reduced harmful emissions and enhanced engine performance.

The Delphi 78QZFH Oxygen Sensor is a zirconia sensor, which is known for its ability to quickly respond to changes in oxygen concentration levels. It is a heated oxygen sensor, which means that it is equipped with a heating element that maintains an ideal operating temperature, ensuring accurate sensor readings.

The sensor features a compact, durable design, with a ceramic body and stainless steel housing. This not only ensures a long service life but also adds to the sensor's resistance to harsh exhaust gas conditions. The sensor is also designed to be easily installed, with a standard OEM-style connector and a plug-and-play design.

The Delphi 78QZFH Oxygen Sensor is a direct replacement for the original equipment sensor and is engineered to meet or exceed OEM specifications. It is backed by Delphi's warranty, offering peace of mind to customers who demand the highest quality and reliability. This sensor is an essential component for maintaining the proper functioning of the emissions system and ensuring optimal engine performance. When it comes to maintaining the longevity and efficiency of your Acura MDX, investing in a high-quality oxygen sensor like the Delphi 78QZFH is a smart choice.

Delphi 78QZFH Rear Oxygen Sensor for Acura MDX (2001-2002) 3.5L V6: A Comprehensive Analysis

The Delphi 78QZFH rear oxygen sensor is a crucial component of the emissions system in certain Acura MDX models manufactured between 2001 and 2002, equipped with a 3.5L V6 engine. This analysis aims to provide you with a clear understanding of the benefits and potential downsides of purchasing this specific oxygen sensor.

1. Improved Emissions System Performance: The primary function of an oxygen sensor is to monitor the efficiency of the vehicle's emissions system by measuring the amount of unburnt oxygen in the exhaust gases. By replacing a faulty sensor with a new one like the Delphi 78QZFH, you can ensure that your Acura MDX maintains optimal emissions system performance.

2. Fuel Efficiency: A malfunctioning oxygen sensor can lead to decreased fuel efficiency, as the engine may not be able to efficiently combust fuel. Installing a new oxygen sensor, such as the Delphi 78QZFH, can help restore optimal fuel efficiency and save you money on gas.

3. Potential to Pass Emissions Tests: If you live in an area with strict emissions regulations, having a functioning oxygen sensor is essential for passing emissions tests. Installing a new sensor, such as the Delphi 78QZFH, can give you peace of mind and help avoid costly repairs.

4. Longer Engine Life: A faulty oxygen sensor can lead to various engine-related issues, such as misfiring, rough idling, and decreased performance. By replacing it with a new one like the Delphi 78QZFH, you can help ensure the longevity of your engine and potentially save yourself from costly repairs.

1. Cost: While the Delphi 78QZFH rear oxygen sensor is not excessively priced, it still represents an additional expense for vehicle maintenance. The cost must be weighed against the potential benefits, such as improved emissions performance and fuel efficiency.

2. Installation Complexity: Installing the Delphi 78QZFH rear oxygen sensor may require some mechanical expertise or professional assistance. This could add to the overall cost and time investment involved in the replacement.

3. Potential for False Positives: While rare, there is a possibility that a new oxygen sensor, such as the Delphi 78QZFH, could register false readings. In such cases, it is essential to have the vehicle diagnosed by a professional to ensure the sensor is functioning correctly.

The Delphi 78QZFH rear oxygen sensor is an essential component for maintaining the emissions system performance, fuel efficiency, and overall health of your Acura MDX (2001-2002) 3.5L V6. While there are costs and installation complexities associated with the replacement, the potential benefits, such as passing emissions tests, improved fuel efficiency, and engine longevity, make the investment worthwhile. Ultimately, the decision to purchase the Delphi 78QZFH rear oxygen sensor depends on your personal circumstances, budget, and the condition of your vehicle. If you're experiencing symptoms of a faulty oxygen sensor, it is recommended that you consider investing in a new one to ensure optimal vehicle performance and longevity.

Details:

Detailed Applications. Wiring Harness length : 34.3 in. Wiring Harness length : 872.0mm. Thread Type Standard: Metric.

Package Contents: Oxygen Sensor, Instruction Sheet. Tested and calibrated to OE standards. Product Specifications Position s: Rear. Wire Quantity: 4.

Sensor Type: Narrow-Band. Rear Delphi Oxygen Sensor fits Acura MDX 2001 - 2002 3.5L V6 78QZFH: Position: Brand: condition: New Notes: Sensor, Features:Backed by stringent OE development and product validation methods.

part #: 78qzfh prices

• $51.98-$109.51

specifications acrasensor:

• for models: Mdx
• for makes: Acura
• for years: 2001-2002
• brand: Delphi
• mpn: 78qzfh
• part type: Sensor
• engine: 3.5l V6
• compatible make/model: Acura Mdx
• compatible years: 2002 2001 02 01
• position: Rear
• fitment info: Oxygen Sensor
• manufacturer warranty: 12 Month Warranty
• attention: Read Full Description To Confirm Fitment
• cs-sku: 400

seller acrasensor:

• rating: 99.1%
• # reviews: 23807
• city: Tempe, Arizona

payments acrasensor:

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

shipping acrasensor:

• transit: 4-8 Days
• class: Economy
• service: Economy
• type: Fixed
• cost: $0.00

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

offer acrasensor:

• sold: 0
• availability: In Stock
• started: April 5, 2026
• quantity: 2
• options: Ship-to-home

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