Delphi ES20152 Oxygen Sensor - Front

Delphi ES20152 Oxygen Sensor for Mazda Miata

The Delphi ES20152 is a heated front oxygen sensor built for precise exhaust monitoring and OE-style replacement performance. It is a direct-fit option for select Mazda Miata applications, including 1994-2000 Mazda Miata front positions.

• Heated oxygen sensor for faster operating temperature
• 4-wire design for the specified vehicle application
• 18 x 1.5 mm thread size
• 740.0 overall length
• Front position fitment for select Mazda Miata models
• Package contents: oxygen sensor and instruction sheet

OE-Style Design and Fitment

Delphi ES20152 is engineered with Delphi’s OE heritage and decades of supplier experience behind it. The sensor is intended for front exhaust placement on select Mazda Miata models, including Fits 1999-2000 Mazda Miata, Front and Fits 1996-1997 Mazda Miata, Front, plus Fits 1994-1995 Mazda Miata, N/A. This part cross-references Bosch 15330 and DENSO Auto Parts 234-4144 for the same application.

What This Oxygen Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio readings
• Reduced fuel control from a worn front sensor
• Slow sensor response during warm-up
• Emissions test failures tied to sensor output

Installation Notes and Tips

Verify thread size, wire count, and sensor position before installation. This Delphi oxygen sensor uses an 18 x 1.5 mm thread and a 4-wire heated design, so matching the original connector and routing is important for proper installation on Mazda Miata applications. Follow the included instruction sheet and confirm the front sensor location before replacement.

Quality Assurance

Delphi builds aftermarket parts using OE experience gained from supplying major automakers. The ES20152 reflects that background with application-specific engineering for front oxygen sensor replacement on select Mazda Miata vehicles.