Ignitions and Electrical› Ignition Components

NGK

NGK Audi A4 2001-2000 Direct Fit Oxygen Sensor

$195.76

SKU: N003 25597

Special Order
Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The NGK/NTK 25597 is an OE-identical oxygen sensor designed to reduce emissions and ensure smog test compliance. It features a protective coating, rapid activation times, and utilizes NTK's premier technical ceramic material with an integrated heater for quick closed-loop activation and reduced cold start emissions. The advanced housing is corrosion-resistant and protects the ceramic element from contaminants, while a porous PTFE filter allows atmospheric oxygen entry without allowing contaminants into the casing.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandNGK
Part NumberN003 25597

Buy with Confidence

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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