Air and Fuel Oxygen Sensors, Controllers and Components

Denso

AIR/FUEL SENSOR

$192.60

SKU: D00A 234-5731

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

Easy — 1–2 hours

Description

The Denso 234-5731 is an OE-identical Air/Fuel Ratio (AFR) sensor designed to provide precise output proportional to the air/fuel ratio. This sensor helps the ECU achieve an exact AFR response, leading to improved performance, reduced emissions, and better gas mileage.

It features an aluminum-oxide trap layer to protect the ceramic and platinum electrode from silicone and lead poisoning. A double protection cover ensures proper unit temperature for quicker response times and shields the ceramic element from contamination. The stainless steel housing offers corrosion and contamination resistance, while a porous PTFE filter allows atmospheric oxygen entry without letting contaminants seep in.

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

BrandDenso
Part NumberD00A 234-5731

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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