4PCS O2 Oxygen Sensor Front & Rear Downstream Upstream For Ford Mercury Mazda
4PCS O2 Oxygen Sensor Front & Rear Downstream Upstream For Ford Mercury Mazda is a set of four direct-replacement oxygen sensors priced at $50.36. Featuring 4-wire, M18-1.5 threaded design, it's ideal for maintaining engine efficiency and emissions compliance in compatible Ford, Mercury, and Mazda vehicles.
● In stock
Buy at Lab Work Auto →Price and availability may change. Click to see current details on Lab Work Auto.
Key features
- Complete 4-sensor set for full replacement
- Direct OEM fit with M18-1.5 threaded design
- 4-wire configuration with male plug connectors
- High-quality internal chip from top supplier
- 16.6-inch wire length for flexible routing
- Hex size 7/8 for standard socket use
- Interchangeable with 11171843, 15717
Pros
- +Cost-effective 4-pack for full system update
- +Tested before shipment for reliability
- +Improves fuel economy and reduces emissions
- +Compatible with multiple Ford and Mazda models
Cons
- −Connector may require trimming on some models
- −Not plug-and-play for all vehicle variants
About 4PCS O2 Oxygen Sensor Front & Rear Downstream Upstream For Ford Mercury Mazda
What is 4PCS O2 Oxygen Sensor Front & Rear Downstream Upstream For Ford Mercury Mazda?
The 4PCS O2 Oxygen Sensor Front & Rear Downstream Upstream For Ford Mercury Mazda is a complete set of four brand-new oxygen sensors engineered to replace factory-installed units in select Ford, Mercury, and Mazda vehicles. These sensors monitor oxygen levels in exhaust gases, helping the engine control module optimize fuel mixture, improve fuel economy, and reduce harmful emissions. Each unit is tested before shipment and built with high-quality components, including chips from top-tier suppliers, ensuring reliable performance and durability.
Key features
- Complete 4-Sensor Set — Includes upstream and downstream sensors for full system replacement.
- Direct OEM Replacement — Designed to fit vehicles requiring M18-1.5 thread size without adapters.
- 4-Wire Configuration — Equipped with male 4-pin connectors for standard compatibility.
- Premium Internal Components — Uses high-grade chips from leading suppliers for accurate readings.
- Threaded Mounting — Secure M18-1.5 threaded-in design ensures leak-free installation.
- 16.6" Wire Length — Provides ample reach for front and rear exhaust positions.
- Interchange Fitment — Compatible with part numbers 11171843 and 15717.
Who is 4PCS O2 Oxygen Sensor Front & Rear Downstream Upstream For Ford Mercury Mazda for?
This sensor set is ideal for DIY mechanics and auto repair shops servicing Ford, Mercury, and Mazda models that require four oxygen sensors. It’s best suited for users performing emissions repairs, check engine light diagnostics, or routine maintenance to restore fuel efficiency. Some models may require minor modification to the connector housing.
How does 4PCS O2 Oxygen Sensor Front & Rear Downstream Upstream For Ford Mercury Mazda compare?
Compared to single-sensor purchases, this 4-piece kit offers cost savings and ensures uniform performance across all sensor positions. While not an exact connector match for every vehicle, it outperforms generic sensors in build quality and reliability. It matches OEM specifications more closely than basic aftermarket units, especially in signal accuracy and longevity.
Best use cases
- →Replacing failed upstream and downstream O2 sensors
- →Fixing check engine light related to O2 codes
- →Routine maintenance for fuel efficiency
- →Emissions test preparation
- →DIY repair on Ford, Mercury, Mazda vehicles
Is 4PCS O2 Oxygen Sensor Front & Rear Downstream Upstream For Ford Mercury Mazda right for you?
This 4-pack is best for DIYers and mechanics maintaining Ford, Mercury, or Mazda vehicles requiring four oxygen sensors. Moderate mechanical skill is needed for installation. If your vehicle needs only one or two sensors, buying individually may be more economical. Ensure compatibility with your model year and check connector fit before purchase.
How it compares: Compared to single-sensor kits, this 4-pack offers better value and consistent performance. It outperforms basic aftermarket sensors in durability and signal accuracy, though not always plug-and-play. Ideal for those seeking OEM-level replacement without dealer pricing.
More from Lab Work Auto
#63P-81950-00-00 TRIM RELAY For YAMAHA OUTBOARD F150 & 250 Part
$17.80
(4 pcs) For Ford F-150 Bed Interface Plates Standard Tie Down FL3Z9928408AB
$16.82
-6 An X 5/16-24 O Ring Hydroboost Spittier/Return Port Fitting Car Accessories
$8.20
-6AN AN6 Fuel Adapter Fitting to 3/8 Quick Connect LS W/ Clip Female Black GM
$7.91Frequently Asked Questions
What vehicles fit the 4PCS O2 Oxygen Sensor Front & Rear Downstream Upstream For Ford Mercury Mazda?
▾
This set fits select Ford, Mercury, and Mazda models requiring M18-1.5 threaded oxygen sensors. Check your vehicle's compatibility with part numbers 11171843 or 15717 for confirmation before installation.
Does the 4PCS O2 Oxygen Sensor Front & Rear Downstream Upstream For Ford Mercury Mazda come pre-tested?
▾
Yes, each sensor is 100% tested before shipment to ensure proper function, signal accuracy, and electrical integrity, reducing the risk of defects upon installation.
How difficult is installation of the 4PCS O2 Oxygen Sensor Front & Rear Downstream Upstream For Ford Mercury Mazda?
▾
Installation requires basic mechanical tools and moderate skill. The threaded M18-1.5 design allows standard socket use, but some models may need minor trimming of connector tabs for fitment.
Is the 4PCS O2 Oxygen Sensor Front & Rear Downstream Upstream For Ford Mercury Mazda an exact plug-in replacement?
▾
While designed as a direct replacement, the plastic connector may not perfectly match all models. Users may need to cut small side pins for proper fit, especially on certain Ford and Mazda variants.
Can this sensor set improve fuel economy?
▾
Yes, replacing faulty O2 sensors with these high-quality units helps restore optimal air-fuel mixture, which can improve fuel efficiency, reduce emissions, and clear check engine lights.
How much does 4PCS O2 Oxygen Sensor Front & Rear Downstream Upstream For Ford Mercury Mazda cost?
▾
4PCS O2 Oxygen Sensor Front & Rear Downstream Upstream For Ford Mercury Mazda is $50.36 at Lab Work Auto. Prices may change — click through to Lab Work Auto for the latest.
Is 4PCS O2 Oxygen Sensor Front & Rear Downstream Upstream For Ford Mercury Mazda in stock at Lab Work Auto?
▾
Yes, 4PCS O2 Oxygen Sensor Front & Rear Downstream Upstream For Ford Mercury Mazda is currently in stock at Lab Work Auto.
Specifications
- SKU
- F7-6486