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Catalytic Convertor, Aftermarket, MX5 Mk1

Quality aftermarket replacement catalytic convertor. Mild steel construction, hi-flow core. At least equal to the original in both quality and efficiency.

Fits all Mazda MX5 UK cars AND Eunos Roadsters

There are three different cats fitted to the Mk1,
1.6 or 1.8 upto 1994. This cat is 370mm in length.
1.6 or 1.8 from 1994 to 1997. This cat is 440mm in length.
1.6 or 1.8 1997/8. This cat is 475mm in length.

If the date of manufacture of your car is near any of the change-over points, the safest way to ensure you order the correct cat is to measure the distance between the two mounting flanges of your existing cat.

Please note: This part is Not supplied with gaskets or nuts


Based on 15 reviews

Adam Meyer
For 90 quid, I can't grumble. Got mine through its MOT without issue and fit fine. It was also delivered in less than 24 hours
03/10/2022 12:17:08
Chris Fantana
August 2020 - Ordered 370mm version for '92 1.6. Very high-quality Cat with excellent welds. No complaints here.Does not come with a fitting kit so make sure you order studs/nuts/gaskets etc.
05/08/2020 12:16:05
Angel Zuñel Ballesteros
It wasen't enough for Spanish regulations.
01/02/2018 12:16:12
Alan Rawlins
After reading the reviews I have decided not to purchase this catalytic converter. I am at a loss to understand why MX5PARTS are still selling what appears to be a very inferior part.
13/11/2017 12:16:13
Georgina Wilson
The original cat on the car lasted 19 years, this version I bought 2 years ago now needs replacing. Equal to the original? I have my doubts . . .
17/03/2017 12:16:15
Mr Cheyney
I purchased this item to replace the original cat which lasted 19 years and 94,000 miles. This one managed 3,100 miles and three years. When I was told my car had failed the mot on emissions, I then wasted even more money on diagnostic tests as I could not believe the catalyst could have failed after hardly being used. It had. I phoned mx5 parts to discuss my disappointment, and I was advised that three years (irrespective of the low mileage) was about right. This item is described as \'high quality\', which is misleading and the description needs to be amended. I have been given free delivery on the replacement I have had to purchase, but this is not really good enough. If something is sold as high quality it should better than this.Editors Note: Sorry to hear that you have experienced problems with this item. Generally speaking, cats on their own don\'t just fail, something will have caused it. This link is to a US exhaust manufacturer. If you scroll to the bottom of the page and click where it says Problem, they list some of the most common causes - http://www.bobsmuffler.comThe reason OEM cats last much longer is that they are produced with much bigger monoliths and can withstand running problems for much longer, hence why they are so much more expensive. Aftermarket manufacturers use smaller ones as they are more cost effective to produce. They are normally fine, providing the car is running perfectly. The question must be asked, if the original OEM cat needed replacing, and that replacement has also failed, it would point towards something causing it to happen.
16/06/2016 12:16:17
Timothy Key
Poor quality item, only lasted 1 year before internals fell to pieces causing nasty rattle. I would advise getting a second hand oem Mazda, or fork out for a new oem which are much better quality.
06/06/2015 12:16:20
Andrew James
Very disappointed with this part and service received trying to resolve fitting issues, had to resort to cutting and welding to get to fit as angles all wrong.
27/11/2014 12:16:22
Jean-Christophe PERRODO
Very bad choice ... This catalytic converter is not expensive ... but it is no more ... Bought in November 2012, mounted in April 2013, it is now out of use. He has not resisted one year of operation and less than 4000km. Do not buyTrès mauvais choix...Ce pot catalytic n'est pas chère... mais il ne vaut pas plus...Acheté en novembre 2012, monté en avril 2013, il est aujourd'hui hors d'usage.Il n'a pas resisté 1 an de fonctionnement et moins de 4000km.A ne pas acheter
21/01/2014 12:16:26
Martin Edwards
Very disappointed with this cat, it is 2 years old and I have done less than 5,000 miles and my car has failed an MOT on the cat. The year before it only JUST passed. This is unacceptable, when I rang to complain last year to MX5 Parts I was told that after sending the reading from the garage that this was acceptable. DON'T purchase this item.
23/05/2013 12:16:29

Delivery Information - MX5 Parts

We understand that its really important for you to receive your goods in a timely fashion and for a competitive price. To ensure that we can deliver this we have developed a strategic partnership with both the Royal Mail and our courier partner, Think Worldwide.

At the present time, we only offer one delivery option ‘our carrier’. We will dispatch your goods with the most suitable carrier, for main land UK deliveries this is normally Royal Mail 1st class for packages weighing under 1.5kg and Think Worldwide for those that are over.

Our delivery charges are based on the weight of the consignment and the destination address. For UK mainland deliveries they start at £1.97 for a package weighing under 300g and rise to a MAXIMUM of £9.95 for a package weighing 1.5kg or over (EXCEPT very large bulky items that have an additional shipping surcharge added). The exact delivery cost will be clearly displayed at checkout.

Delivery times are estimated at 1-3 working days by Royal Mail, and 1-2 working days by Think Worldwide for mainland UK addresses. If you order before 3pm, Monday to Friday, we will dispatch the same day. If you order after 3pm, we will try to dispatch the same day, but if we cant it will be the next working day. Items ordered after 3pm Friday or over a weekend will be dispatched Monday. Items dispatched on Friday are for delivery the following week. Items ordered over a Bank Holiday will be dispatched the next working day. MX5parts is constantly updated to keep pace with changes in our stock but demand is high and we occasionally run out of popular items. If we have run out of stock and can’t dispatch your order the next working day, we’ll email or phone you with a revised dispatch date. You can then either accept the revised dispatch date or cancel the order, as you wish. Please note, shipping times are an estimate, and can not be guaranteed. Please note that during special offer periods, dispatch of your order may be delayed slightly due to high a volume of orders.

A signature is required for ALL orders delivered by Think Worldwide. Someone must be at your delivery address to sign for your parcel between 8am and 6pm on a working day. Please send it somewhere it can be reliably signed for, like your place of work, a neighbour, or perhaps your grans. We can (but we don’t like to) ask the courier to leave your parcel without a signature. If we do this, it will be YOUR responsibility if the parcel is lost or damaged. If you want it left, you need to give us your express instructions in the ‘additional information’ box at the end of the checkout process. It would be helpful if you could also indicate exactly where the package should be left.

If you need to change your delivery address, for any packages that have been dispatched with Think Worldwide, there will be an additional charge of £9.95 if the package has already been dispatched.

Please remember, even with Royal Mail deliveries, that any items which are too large to fit through your letter box will need someone to be available to receive the delivery. If the item cannot be delivered, you will be carded and given the option of either a re-delivery or you can collect your parcel from your local post office depot.

Orders sent to countries outside the UK will be sent VAT free, however please note that on all international shipments, the recipient is responsible for any local VAT, import duty and other clearance fees that may be charged.

For further information please email:

We NOW deliver to the following countries:

Baleares, Spain
British Virgin Islands
Burkina Faso
Canary Islands
Cayman Islands
Channel Islands
Costa Rica
Czech Republic
Dominican Republic
El Salvador
France (Mainland Only)
French Guiana
Hong Kong
Marshall Islands
New Caledonia
New Zealand
Papua New Guinea
Portugal (Mainland Only)
Puerto Rico
Saint Vincent And The Grenadines
San Marino
Saudi Arabia
South Africa
Spain (Mainland Only)
Sri Lanka
St Lucia
Syrian Arab Republic
Taiwan, Province of China
Trinidad And Tobago
United Arab Emirates
United Kingdom
United States

Our Guarantee - MX5 Parts

We guarantee that you’ll be satisfied with mx5parts!

We are an independant, family company, run by a dedicated team. We aim to be the kind of company that we’d like to deal with if we were you. You have our absolute commitment as fellow MX-5 owners, car nuts, internet users and hard-working people that you’ll be satisfied with mx5parts. If you’re not, let us know and we’ll sort it out!

We guarantee “always fair prices”

MX5parts maintains an everyday savings pricing policy. We watch other retailers closely and maintain competitive pricing. The internet being the beast it is means that any Tom, Dick or Henrietta can set up a website in their back room and charge bargain basement/off the back of a lorry (guv) prices. Often they will have no stock, no returns policy, questionable security, no guarantees and of course poor customer service. MX5parts strives to be open and honest, so we will never inflate our prices to set up an artificial ‘sale’ (a common – and illegal – retail practice).

It is inevitable in an open market like the internet that there will be some individuals selling some items cheaper than we do, and some selling them for more than we do, just as in the high street. We take great pride in offering a fast, efficient, friendly and secure shopping experience, with great products at fair prices. We encourage our customers to shop around, but are very pleased to welcome them back again and again.

We guarantee to despatch your order when we say we will

If you order before 3pm, Monday to Friday and we have your items in stock , we’ll despatch the same day . If you order after 3pm, we’ll still try to despatch that day but, if we can’t, we’ll despatch the following day. Items ordered after 3pm Friday or over a weekend will be despatched Monday. Items despatched on Friday are for delivery the following week. Items ordered over a Bank Holiday will be despatched the next working day. MX5parts is constantly updated to keep pace with changes in our stock but demand is high and we occasionally run out of popular items. If we have run out of stock and can’t despatch your order the next working day, we’ll email or phone you with a revised despatch date. You can then either accept the revised dispatch date or cancel the order, as you wish. Please note that during special offer periods, dispatch of your order may be delayed slightly due to high a volume of orders.

We guarantee to replace any goods which aren’t suitable

We guarantee to accept back any goods that you do not want, are not suitable, have changed your mind about, infact, for ANY reason, provided the goods reach us within 30 days of dispatch from us, in their original condition and packaging. Please tell us why you are returning the items, just for our records. The original purchase price of the goods will be refunded on to the card that was used for their purchase. Sorry, but we can not refund the carriage costs.

We guarantee to sort out any problem with your order

Just contact us if you have any problems with an order from mx5parts. We’ll tell you exactly what steps we’re going to take to rectify the problem.

We guarantee full warranty support on all items

Just contact us if you have a warranty problem. All goods supplied by mx5parts are from official sources and are covered by the normal manufacturers warranty.

We guarantee that we will only charge your credit/switch card when your goods are dispatched

This is your right under UK law and, if we do anything else, it’s illegal!

(Please note: This doesn’t apply however if you have chosen to pay via PayPal. Due to the way PayPal works, you are effectively sending the money to us rather than us asking for it so in this instance we will have received payment at the time the order was placed and not when it is ready for dispatch).

We guarantee that we won’t pass your email details on to anyone else

Absolutely not. All your details are treated as strictly confidential. We’re internet users, too, and we know how annoying unsolicited email can be. We wouldn’t risk annoying you by being the cause of it.

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Our website uses the very latest secure server hardware and software, and is certified secure by COMODOs hackerguardian facility ensuring we are continuously PCI DSS Compliant.

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