Sale

Denso /

Upstream Oxygen Sensor, Zirconia Heated, 12.99-Inch Harness

$54.99 $12.99 Save $42.00

SKU: 234-4123

In Stock
In Stock
Ships by Aug 29
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The Denso 234-4123 is an upstream oxygen sensor engineered for exact replacement and optimal performance in your vehicle's emission control system. It features a Zirconia sensor type and is heated for quicker response times critical to fuel efficiency. The durable construction includes a rugged stainless steel housing, a porous PTFE filter to prevent contamination, and an aluminum oxide trap layer to protect the ceramic element from silicone and lead poisoning. This OE-identical sensor comes with a 12.99-inch wiring harness, a threaded mounting type, and an OE-type connector, ensuring a first-time fit. It is specifically designed to meet the increasing demands of today's engines and is 100 percent checked for high temperature signal output, air tightness, continuity, and heat resistance.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

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 Number234-4123
CategoryAir and Fuel

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

(760) 282-4645 Instagram Google

Buy with Confidence

Returns & Fitment

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.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

View Full Shipping Policy