AZHZ upstream oxygen sensor visual highlights sensor for accurate air-fuel readings and better efficiency
AZHZ downstream oxygen sensor visual focuses on post-cat monitoring and reliability
AZHZ heated oxygen sensor visual with built-in heater for faster warm-up
AZHZ oxygen sensor connector visual shows plug compatibility for quick install
AZHZ oxygen sensor wiring 380mm visual for flexible engine fit
AZHZ precoated threads visual enables quick, tool-friendly installation
AZHZ engine performance potential visual hints at smoother operation
AZHZ upstream oxygen sensor visual highlights sensor for accurate air-fuel readings and better efficiency
AZHZ downstream oxygen sensor visual focuses on post-cat monitoring and reliability
AZHZ heated oxygen sensor visual with built-in heater for faster warm-up
AZHZ oxygen sensor connector visual shows plug compatibility for quick install
AZHZ oxygen sensor wiring 380mm visual for flexible engine fit
AZHZ precoated threads visual enables quick, tool-friendly installation
AZHZ engine performance potential visual hints at smoother operation

AZHZ Oxygen Sensor Replacement for Hyundai Accent/Elantra — Upstream & Downstream Heated 234-4851

OverviewMeet the AZHZ 234-4851 Oxygen Sensor kit, designed to fit Hyundai Accent (2000–2011), Elantra (2001–2012), Tiburon (2003–2008),...
Vendor: AZHZ
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AZHZ upstream oxygen sensor visual highlights sensor for accurate air-fuel readings and better efficiency

AZHZ Oxygen Sensor Replacement for Hyundai Accent/Elantra — Upstream & Downstream Heated 234-4851

£33.36
AZHZ upstream oxygen sensor visual highlights sensor for accurate air-fuel readings and better efficiency
AZHZ downstream oxygen sensor visual focuses on post-cat monitoring and reliability
AZHZ heated oxygen sensor visual with built-in heater for faster warm-up
AZHZ oxygen sensor connector visual shows plug compatibility for quick install
AZHZ oxygen sensor wiring 380mm visual for flexible engine fit
AZHZ precoated threads visual enables quick, tool-friendly installation
AZHZ engine performance potential visual hints at smoother operation

AZHZ Oxygen Sensor Replacement for Hyundai Accent/Elantra — Upstream & Downstream Heated 234-4851

£33.36
Description
Description
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Overview

Meet the AZHZ 234-4851 Oxygen Sensor kit, designed to fit Hyundai Accent (2000–2011), Elantra (2001–2012), Tiburon (2003–2008), Tucson (2005–2009), and select Kia models. This kit includes both upstream and downstream heated sensors, engineered to monitor exhaust conditions with reliable performance across typical driving scenarios.

Oxygen sensors help the engine management system gauge the air–fuel mix. When a sensor wears, the computer may struggle to balance fuel delivery, affecting throttle response and, potentially, fuel economy. The built-in heater helps reach optimal temperature faster, which can support smoother running and more consistent readings during cold starts.

Key features

  • Vehicle fitment: Upstream and downstream heated O2 sensors compatible with Hyundai Accent (2000–2011), Elantra (2001–2012), Tiburon (2003–2008), Tucson (2005–2009), and Kia Rio/Soul/Spectra/Sportage.
  • Specification: Upstream and Downstream positions; heated type; 380mm wire length.
  • Quality and durability: High-heat welded seals for stronger sealing; built-in heater accelerates warm-up; designed for reliable operation under varied temps.

Installation and maintenance

  • Direct replacement with precoated threads for convenient fit and proper torque.
  • Replacing a damaged O2 sensor supports consistent monitoring of oxygen concentration in exhaust gas, contributing to performance and environmental protection.

Real-world use scenarios

In daily driving, the kit can help restore steady idle, brisk acceleration, and smoother transitions between fuel maps. On highway runs, consistent sensor readings can assist the ECU in maintaining efficient fuel use, especially after a cold start.

Fitment note

Before installation, compare the part image to ensure the plug matches exactly. An identical connector is essential for proper fitment and electrical connection.

FAQ

Q: What vehicles is the AZHZ Oxygen Sensor compatible with?

A: Compatible with Hyundai Accent (2000–2011), Elantra (2001–2012), Tiburon (2003–2008), Tucson (2005–2009), and Kia Rio/Soul/Spectra/Sportage as listed.

Q: Why replace both upstream and downstream sensors with this kit?

A: Replacing both sensors helps maintain continuous monitoring and supports stable engine performance and fuel economy by maintaining accurate air–fuel readings.

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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