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Car O2 Sensor Adapter CEL, Fix Check Engine Light M18 by 1.5

£69.95 £19.95 Save 71%
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NOTICE: This product is one of our bestsellers and is already sold out in our physical store. If the “ADD TO BAG” button still works, it means the product is still in stock online in limited quantities.

Eliminate Check Engine Lights with Our O2 Sensor Adapter

Tired of that persistent check engine light after modifying your exhaust or removing your catalytic converter? Our Car Oxygen O2 Sensor Adapter is engineered to address this issue, providing a reliable solution for a smoother driving experience.

Integrated Miniature Catalytic Converter for Reliable Performance

Unlike simple extensions, our adapter features a built-in mini catalytic converter, ensuring accurate readings and dependable performance. This design effectively turns off the check engine light, giving you the confidence to drive without distractions.

 

 

Durable Construction for Longevity

Crafted from high-quality SS304 stainless steel and stainless steel filter mesh, our adapter is resistant to rust and corrosion. This robust construction ensures long-lasting durability, allowing you to benefit from its advantages over time.

Easy Installation with M18*1.5 Threading

Designed for a snug fit, our adapter features M18*1.5 threading, making installation straightforward. Simply screw it into place, and your vehicle is ready to go—no complex procedures required.

 

 

For Off-Road Use Only

Please note that this adapter is intended for off-road use only. It is not designed for use on public roads or highways. Ensure compliance with all applicable regulations before installation.

 

 

Product Specifications:

  • Material: SS304 Stainless Steel & Stainless Steel Filter Mesh
  • Thread Size: M18*1.5
  • Weight: 40g

Includes:

  • Car Oxygen O2 Sensor Adapter

 

 

FAQs

Q: Will this adapter turn off my check engine light?

A: Yes, the built-in mini catalytic converter is designed to eliminate check engine lights that appear after exhaust modifications or catalytic converter removal.

Q: Is this adapter legal for street use?

A: No, this adapter is intended for off-road use only and is not legal for use on public roads or highways.

Q: How do I install the adapter?

A: The adapter features M18*1.5 threading for easy installation. Simply screw it into place—no additional tools or complex procedures are required.

Q: What error codes does this adapter address?

A: This adapter is designed to address error codes such as P0420 and P0430, which are commonly triggered after removing the catalytic converter.

Q: What materials is the adapter made from?

A: The adapter is made from SS304 stainless steel and stainless steel filter mesh, ensuring durability and resistance to rust and corrosion.

4.7 (19.342)
Jack Turner

Confirmation came through straight away, then another email when it was sent. Tracking worked and the parcel arrived when they said it would. Nice and straightforward

Benjamin Foster

Nothing missing and no surprises when I opened the parcel. What turned up matched what I’d seen on the website

Hannah Lewis

Had a look around before buying and this was a fair bit cheaper. Arrived as expected too, so happy with that.

Sophie Bennett

I emailed before ordering because I couldn’t work out which option I needed. Got a proper reply explaining the difference, rather than just a link back to the page I’d already read. Might seem a small thing but it helped me decide. Placed the order that evening and I’m happy with what arrived.

Harry Collins

My first order was only a small one a few months back. That went well, so I checked here when I needed something else. Different sort of purchase this time but everything was just as straightforward. Saved me another evening of looking around!

Daniel Thompson

Ordered Sunday evening and it was here Tuesday morning. Wasn’t expecting that, especially ordering over the weekend

Charlotte Brooks

All arrived, all good 😊

Amelia Scott

Entirely my mistake, I picked the wrong option and only noticed when the confirmation came through. Sent an email and they managed to change it before dispatch. Very relieved I didn’t have to deal with returning it afterwards!

George Wilson

Bought it in the sale. Happy with what I paid and it’s what I was after, which is the main thing.

Grace Mitchell

Hadn’t heard of Havenholt before and wasn’t sure about ordering from somewhere new. Only bought one thing to start with. There was a short wait for dispatch, but they kept me updated and everything arrived as described. Happy with the purchase and I’d be comfortable ordering again.

Emily Carter

There was a mix-up with my order so I had to get in touch. Sent a photo over and they explained what would happen next. Didn’t have to keep repeating myself to different people, which I really appreciated. All sorted now

Samuel Reed

They didn’t have the one I wanted when I went into the shop, but suggested checking online. Managed to order it on the website later that day. Would have preferred to take it home there and then, but this worked out fine.

Information

Our policies

Customer Support

Company name: Havenholt LTD

Address: St Andrew's Street, Cambridge CB2 3BJ, United Kingdom

Email: support@havenholt.com

Phone: +44 1223 302601

Customer Service Hours:
Mon–Fri: 09:00 am–05:00 pm
Sat & Sun: Closed

Response time: Within 24 hours

© 2026 Havenholt

Car O2 Sensor Adapter Fix Check Engine Light M18 1.5