O2 Sensor Adapter CEL Fix with Mini Catalytic Converter M18x1.5

O2 Sensor Adapter CEL Fix with Mini Catalytic Converter M18x1.5

£24.95
Sale price  £24.95 Regular price  £37.99
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O2 Sensor Adapter CEL Fix with Mini Catalytic Converter M18x1.5
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O2 Sensor Adapter CEL Fix with Mini Catalytic Converter M18x1.5

£24.95
Sale price  £24.95 Regular price  £37.99
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A. Morgan
A. Morgan★★★★★

Second time ordering from here and they've never let me down. Quick delivery, well-packed parcel and the product exactly as described. It's become my go-to shop.

Built-in mini catalytic converter
Clears P0420 and P0430 sensor codes
SS304 stainless steel, rust-resistant
M18x1.5, post-O2 bung compatibility
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Sent with Royal Mail, DPD or Evri

  • Dispatched in 24h
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Order today and get it in record time. Our items are ready to slot into your everyday life from the very first moment.

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Wherever you live — city or countryside — we deliver at no extra cost. An easy, fast shopping experience with no surprises.

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We know your time is precious. That is why every order is processed and dispatched in under 24 hours, with clear tracking updates right through to delivery.

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We have full confidence in the quality and performance of our products. That is why you get 30 days to try them at home, with no obligation and complete peace of mind.

Your Satisfaction Is Our Priority

If you have a problem, a question or simply need a hand, our customer care team is always there for you. We want your experience to be easy, fast and completely satisfying, from the first click to the delivery.

Silence Your Check Engine Light for Good — Drive with Total Confidence

That persistent check engine light after an exhaust mod or catalytic converter removal doesn't have to haunt every drive. This O2 Sensor Adapter features a built-in miniature catalytic converter that tackles the root cause — not just the symptom. The result: error codes like P0420 and P0430 are effectively cleared, giving you a clean dashboard and a stress-free ride.

O2 sensor adapter with mini catalytic converter

Benefits of the O2 Sensor CEL Fix Adapter

  • True mini catalytic converter: Unlike risky spacer extensions, this adapter houses a real built-in catalytic converter for accurate, reliable CEL elimination.
  • Clears P0420 & P0430 codes: Directly addresses the most common post-cat oxygen sensor error codes triggered after exhaust modifications.
  • Rust & corrosion resistant: Constructed from SS304 stainless steel and a stainless steel filter mesh for lasting durability under demanding conditions.
  • Fast and simple installation: M18x1.5 thread screws directly into your existing bung — no special tools or complex steps required.
  • Lightweight design: Weighs only 0.04 kg, adding virtually no extra load to your exhaust system.
CEL fix adapter installed on exhaust

Specifications

  • Material: SS304 stainless steel with stainless steel filter mesh
  • Thread size: M18x1.5
  • Built-in feature: Miniature catalytic converter
  • Weight: 0.04 kg
  • Compatibility: Post-O2 / downstream oxygen sensor bung
  • Error codes addressed: P0420, P0430 (CEL, SES, DTC)
  • Use: Off-road use only

What's in the Box?

  • O2 sensor adapter: 1x M18x1.5 CEL fix adapter with built-in mini catalytic converter

★ Last chance! NALDONY + offer

★ Free delivery on every order

★ 30 days to return

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CLEAR CEL CODES

Drive with a clean dash

This O2 Sensor CEL Fix Adapter uses a true miniature catalytic converter to tackle the root cause of stubborn post-cat error codes. It is designed to clear common codes like P0420 and P0430 after exhaust modifications for a more confident drive.

✓  Targets post-cat O2 sensor errors

✓  Built-in mini catalytic converter

✓  For off-road, modified exhaust use

BUILT TO LAST

Stainless steel construction

Made from SS304 stainless steel with a stainless steel filter mesh, this adapter is built to withstand harsh exhaust environments. Its rust and corrosion resistant design keeps it performing reliably over time.

✓  SS304 stainless steel body

✓  Stainless steel filter mesh

✓  Resists rust and corrosion

EASY INSTALL SETUP

Simple thread-in install

The adapter features an M18x1.5 thread that screws directly into your existing downstream O2 sensor bung. Installation is fast and straightforward, with its lightweight 0.04 kg design adding virtually no load to the exhaust.

✓  M18x1.5 thread size

✓  Fits post-O2 sensor bung

✓  Lightweight 0.04 kg design

PROTECTED PURCHASE

You are 100 % protected by our purchase guarantee

  • 30-day guaranteeTry it with no obligation
  • Tracked deliveryFree across the UK
  • Easy returnsOn every order
  • 100 % secure paymentEncrypted connection
  • Customer careWe reply fast

Frequently asked questions

How does this O2 sensor adapter fix the engine warning light?

The adapter uses a built-in miniature catalytic converter to address the cause of common post-cat oxygen sensor error codes. By treating the exhaust gases at the sensor, it helps clear codes like P0420 and P0430 for a cleaner dashboard.

What vehicles or sensors is this adapter compatible with?

This adapter is designed for use in a post-O2 or downstream oxygen sensor bung that uses an M18x1.5 thread. As long as your downstream sensor screws into an M18x1.5 bung, this adapter can be used in that location.

Is this product legal to use on public roads?

The adapter is specified for off-road use only. It is intended for situations such as modified exhaust systems where you need to manage downstream O2 sensor codes away from regular road use.

What is the adapter made from and how durable is it?

It is constructed from SS304 stainless steel with a stainless steel filter mesh. This combination offers strong resistance to rust and corrosion under demanding exhaust conditions.

What is included and how heavy is the adapter?

You receive one M18x1.5 CEL fix adapter with a built-in mini catalytic converter. It weighs only 0.04 kg, so it adds virtually no extra load to your exhaust system.

Is delivery free?

Yes. Every order is delivered free of charge, whatever the basket total. Full details in the Shipping Policy.

When is my order processed?

We prepare orders within 1–2 business days of purchase (with extra care for fragile items). The cut-off for same-day processing is 16:00 UK time.

How do I track my order?

Once your order is dispatched you receive an email with the tracking number and a link to the carrier's portal. You can also check the status on our Track Order.

Can I return an item?

Yes. We accept returns within 30 calendar days of receiving your order (an extension of the 14-day statutory cooling-off period). The item must be unused and in its original packaging. Full procedure in the Refund Policy.

How long does a refund take?

Up to 7 business days from the moment the returned item reaches our warehouse. The money goes back to the same payment method used for the purchase.

Which payment methods do you accept?

Visa, Mastercard, American Express, JCB, Discover and Diners Club cards; Apple Pay and Google Pay digital wallets. All prices are shown in pounds sterling (GBP) and are final prices, with no hidden charges or fees.

Are payments secure?

Yes. We use Stripe — an operator certified to the PCI DSS Level 1 standard. All transmissions are SSL/TLS encrypted and card payments use 3D Secure authentication. Details in the Payment Policy.

Are there any hidden charges?

No. All prices are shown in pounds sterling (GBP) and are final prices, with no hidden charges or fees. Delivery is free. We charge no handling fees and no extra customs costs.

Can I cancel or change an order after placing it?

Yes, but without delay. Write to us at support@naldony.com. Changes are only possible up to the moment the parcel is handed to the carrier.

How do I contact customer care?

Email: support@naldony.com. Phone: +34 662 579 686. Hours: Mon–Fri, 9:00–17:00 (UK time). We reply within one business day.

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