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Suitable for 2Pcs O2 Sensor Up & Down for Mazda MX-5 Miata 2.0L (16-18)| P51B188GX, P51S1886ZA
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Suitable for 2Pcs O2 Sensor Up & Down

for Mazda MX-5 Miata 2.0L (16-18)
🏷️ Replaces OE: P51B188GX, P51S1886ZA
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$59.95
Final: $56.95 -5% OFF
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⚙️ Sensor Installation Blueprint
ENGINE CATALYTIC CONVERTER UPSTREAM (SENSOR 1)Exhaust Manifold (Engine Side) DOWNSTREAM (SENSOR 2)Exhaust Pipe (After Converter)
👨‍🔧 Mechanic's Installation Notes:

This is a COMPLETE SET (Upstream & Downstream). O2 sensors wear out at the same rate (typically 80k-100k miles).
Installation: Upstream sensors screw into the exhaust manifold near the engine. Downstream sensors screw into the pipe after the catalytic converter under the car.

Common Error Codes: P0131, P0171, P0420, P0430
Expert Recommendation: Replacing all sensors together ensures optimal engine performance and saves you from paying mechanic labor costs twice.

Automotive-Leader Sensors

Vehicle Compatible

Year
Make
Model
Engine/Displacement
2016-2018
Mazda
MX-5 Miata
2.0L L4

 

Product Specifications

Warranty & Support: 2 Years + Pre-sale Load Test + 24/7 Technical Support
Item
Specification
Core Part Number
1. Upstream Sensor: 234-8027
2. Downstream Sensor: 234-5724
Interchange: P51B-18-8GX, P51B188GX, P51B18-8GX, P51B 18 8GX, 2345720, 234-5720, 234 5720, 234-8000, 2348000, 89465WB001, P51C18861, P51S1886ZA, P51C-18-861, 24788
Position
Upstream: Front, Pre-Catalytic Converter
Downstream: Rear, Post-Catalytic Converter
Key Parameters
- Sensor Type: Heated
- Wire Quantity: 4-Wire (Both Sensors)
- Wire Harness Length:
  - 234-8027: 16.38 IN
  - 234-5724: 12.80 IN

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