Ignitions and Electrical› Ignition Components

Denso

MAZDA

$148.78

SKU: D00A 234-4939

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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 Denso 234-4939 is a downstream oxygen sensor designed for specific Mazda models. It features a heated sensor element for faster activation and improved efficiency, along with a four-wire configuration for reliable signal transmission. The sensor includes a 26.77-inch wiring harness for proper installation.

The design includes an aluminum-oxide trap layer and a double protection cover to safeguard the platinum electrode and maintain optimal unit temperature.

Fitment

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Available on iOS & Android

Specifications

BrandDenso
Part NumberD00A 234-4939

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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