Air and Fuel› Oxygen Sensors, Controllers and Components

Denso

IRIDIUM SPARK PLUG

$78.04

SKU: D00A 5721

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 234-5721 is an OE-identical Air/Fuel Ratio (AFR) sensor. It features a sophisticated sensing element to produce a precise output relative to the air/fuel ratio, aiding the ECU in achieving better performance, lower emissions, and increased gas mileage. The sensor is protected by an aluminum-oxide trap layer to prevent silicone and lead poisoning of the platinum electrode.

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 5721

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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