Air and Fuel Oxygen Sensors, Controllers and Components

NGK

NGK Mercedes-Benz 300SL 1993-1990 Direct Fit Oxygen Sensor

$105.29

SKU: N003 25520

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Special Order
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

Part #: 25520

NTK is the world's largest supplier and manufacturer of OEM oxygen sensors. Oxygen sensors play a critical role as part of the vehicle's on-board diagnostic system in maintaining optimal engine performance, maximizing fuel efficiency and reducing harmful emissions. Providing constant closed loop feedback to the ECU, oxygen sensors help to control the air-fuel ratio while alerting OBDII systems of possible problems with fuel delivery or catalytic converter efficiency. A ceramics company at our core, NTK uses state-of-the art technology enabling control of the ceramic element used in our oxygen sensors from raw material to finished product. Trust The Sensor Specialist for full-line market support and OE application technology.

NTK is constantly improving sensor designs to provide excellent performance and improve resistance to failure. NTK works with their OEM manufacturers through each phase of development from concept to production.

MIA's Description

The NGK 25520 is a direct-fit oxygen sensor designed for specific Mercedes-Benz 300SL models from 1990 to 1993. It features a threaded mounting type and a heated sensor design. This sensor has three wires and a circular connector shape. It includes a wiring harness and has an M18-1.5 thread size with an 18.000mm thread diameter.

Fitment

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Specifications

BrandNGK
Part NumberN003 25520

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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