Denso 234-4012 oxygen sensor front view with compact stainless steel body for precise exhaust readings.
Denso 234-4012 oxygen sensor wiring harness shows a 4-wire connection for stable signals.
Denso 234-4012 oxygen sensor stainless steel body resisting corrosion for longevity.
Denso 234-4012 ceramic element detail for improved response.
Denso 234-4012 package includes one sensor for straightforward replacement.
Denso 234-4012 application coverage chart highlights broad vehicle compatibility across brands.
Denso 234-4012 wiring harness closeup emphasizes the 15.35-inch length.
Denso 234-4012 oxygen sensor front view with compact stainless steel body for precise exhaust readings.
Denso 234-4012 oxygen sensor wiring harness shows a 4-wire connection for stable signals.
Denso 234-4012 oxygen sensor stainless steel body resisting corrosion for longevity.
Denso 234-4012 ceramic element detail for improved response.
Denso 234-4012 package includes one sensor for straightforward replacement.
Denso 234-4012 application coverage chart highlights broad vehicle compatibility across brands.
Denso 234-4012 wiring harness closeup emphasizes the 15.35-inch length.

Denso 234-4012 Oxygen Sensor – Original Version | OE-Quality Narrow-Band O2 Sensor

Overview Denso 234-4012 is a replacement narrow-band oxygen sensor designed to monitor exhaust gas composition with precision....
Vendor: Denso
Availability: In stock
£45.18
£45.18
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Denso 234-4012 oxygen sensor front view with compact stainless steel body for precise exhaust readings.

Denso 234-4012 Oxygen Sensor – Original Version | OE-Quality Narrow-Band O2 Sensor

£45.18
Denso 234-4012 oxygen sensor front view with compact stainless steel body for precise exhaust readings.
Denso 234-4012 oxygen sensor wiring harness shows a 4-wire connection for stable signals.
Denso 234-4012 oxygen sensor stainless steel body resisting corrosion for longevity.
Denso 234-4012 ceramic element detail for improved response.
Denso 234-4012 package includes one sensor for straightforward replacement.
Denso 234-4012 application coverage chart highlights broad vehicle compatibility across brands.
Denso 234-4012 wiring harness closeup emphasizes the 15.35-inch length.

Denso 234-4012 Oxygen Sensor – Original Version | OE-Quality Narrow-Band O2 Sensor

£45.18
Description
Description
x

Overview

Denso 234-4012 is a replacement narrow-band oxygen sensor designed to monitor exhaust gas composition with precision. It features a 4-wire wiring harness (15.35 inches) and is built to OE standards, offering broad applicability across a wide range of vehicles. The part blends a compact form with reliable sensing performance to fit many popular applications without sacrificing quality.

What makes it stand out

  • Corrosion-resistant stainless steel construction for long-lasting service
  • PTFE filter blocks contaminants that can affect sensor readings
  • Refined zirconia element to support a steady sensor response
  • Included 4-wire harness length of 15.35 inches for flexible installation
  • OEM-grade design aimed at a first-time, straightforward replacement

Protection and performance

Engineered with an aluminum oxide trap layer, this sensor helps shield the ceramic element from common contaminants, such as silicone compounds and lead-bearing materials. The result is a potential for more consistent readings over time, especially under variable driving conditions and evolving engine environments.

Compatibility and coverage

The 234-4012 part is designed to fit a broad lineup across multiple brands, including Acura, Buick, Cadillac, Chevrolet, Daewoo, GMC, Honda, Isuzu, Oldsmobile, and Pontiac models. This wide coverage supports a versatile replacement option for many late-1990s to early-2000s vehicles, helping you source a single part that aligns with OE expectations.

What you get

Package quantity: 1. Item dimensions: 5.75 x 2.19 x 1.88 inches. The sensor is designed for straightforward installation and reliable long-term operation when matched to the correct vehicle specifications.

FAQ

Q: What is the main feature of the Denso 234-4012 oxygen sensor?

A: A corrosion-resistant stainless steel body with a refined zirconia element for reliable sensor response.

Q: Which vehicles are covered by this sensor?

A: Broad model coverage across multiple brands, including Acura, Buick, Cadillac, Chevrolet, Daewoo, GMC, Honda, Isuzu, Oldsmobile, and Pontiac.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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