{"id":26955,"date":"2026-10-04T12:00:18","date_gmt":"2026-10-04T11:00:18","guid":{"rendered":"https:\/\/www.cathive.co.uk\/?p=26955"},"modified":"2026-10-04T12:00:18","modified_gmt":"2026-10-04T11:00:18","slug":"homologated-catalytic-converter","status":"publish","type":"post","link":"https:\/\/www.cathive.co.uk\/nl\/blog\/homologated-catalytic-converter\/","title":{"rendered":"Wat betekent \u2018typegoedgekeurd\u2019 bij een katalysator of roetfilter?"},"content":{"rendered":"<p><strong>Homologated<\/strong> means type approved. A homologated catalytic converter or DPF is a replacement part that has been tested by an independent technical service and approved by a government approval authority for a specific list of vehicles, and it carries a permanent approval mark to show it<sup><a href=\"#src-1\">1<\/a>,<a href=\"#src-2\">2<\/a>,<a href=\"#src-3\">3<\/a><\/sup>. It&#8217;s the word in our product names, such as &#8220;Homologated Petrol Cat&#8221;, and what the H stands for in a BM Catalysts part number such as BM91752H<sup><a href=\"#src-4\">4<\/a><\/sup>. Here&#8217;s what it means, when the law requires it, and how to check a part.<\/p>\n<div class=\"ch-callout\">\n<p><strong>The short answer<\/strong><\/p>\n<ul>\n<li><strong>Homologated = type approved:<\/strong> tested and approved as a replacement for the vehicles listed on its approval.<\/li>\n<li><strong>Catalytic converters:<\/strong> must be type approved for most vehicles first registered on or after 1 March 2001.<\/li>\n<li><strong>Euro 5 and Euro 6 vehicles:<\/strong> a replacement DPF, GPF or catalytic converter must be type approved. DPFs for Euro 4 and earlier vehicles need not be.<\/li>\n<li><strong>To check a part:<\/strong> look for the approval mark and the vehicle list, or ask for the type-approval certificate. In our range, look for an H after the digits of the part number and Type Approved on the product page.<\/li>\n<\/ul>\n<\/div>\n<h2>What &#8220;homologated&#8221; means<\/h2>\n<p>Type approval confirms that production samples of a vehicle, system or component will meet specified performance standards. A technical service carries out the tests and an approval authority issues the approval, and no approval is issued unless the manufacturer can show that the parts it goes on to make will keep matching the samples tested, which is called conformity of production<sup><a href=\"#src-1\">1<\/a><\/sup>.<\/p>\n<p>UN Regulation 103 sets out how replacement catalytic converters are approved<sup><a href=\"#src-5\">5<\/a><\/sup>. The Euro 5 and Euro 6 rules use the same tests for every replacement &#8220;pollution control device&#8221;, the law&#8217;s term for the parts that control and limit a vehicle&#8217;s emissions, so DPFs and GPFs are covered too. The replacement is fitted to a test vehicle in place of the original part and checked for emissions, durability and compatibility with the vehicle&#8217;s on-board diagnostics (OBD), the system that monitors the emission controls and stores fault codes<sup><a href=\"#src-3\">3<\/a>,<a href=\"#src-6\">6<\/a><\/sup>.<\/p>\n<p>An approval covers specific vehicles, and the part may only be fitted to a vehicle its approval covers<sup><a href=\"#src-5\">5<\/a><\/sup>. Under the Euro 5 and Euro 6 rules it must come with the list of vehicles, with their years of manufacture, that it is approved for<sup><a href=\"#src-3\">3<\/a><\/sup>. That is why a homologated part is listed against particular models and years. BM Catalysts, who make every part we sell, say their homologated range is tested in accordance with UN Regulation 103<sup><a href=\"#src-7\">7<\/a><\/sup>.<\/p>\n<h2>When the law requires a homologated part<\/h2>\n<p>The rules are in the Motor Vehicles (Replacement of Catalytic Converters and Pollution Control Devices) Regulations 2009, which apply across the UK<sup><a href=\"#src-5\">5<\/a><\/sup>:<\/p>\n<table>\n<thead>\n<tr>\n<th>Part<\/th>\n<th>Vehicle<\/th>\n<th>Must it be type approved?<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Catalytic converter<\/td>\n<td>First registered before 1 March 2001<\/td>\n<td>No, but the replacement should perform as well as the original<sup><a href=\"#src-2\">2<\/a><\/sup><\/td>\n<\/tr>\n<tr>\n<td>Catalytic converter<\/td>\n<td>Passenger vehicle or light van, type approved with a catalytic converter and first used on or after 1 March 2001<\/td>\n<td>Yes<sup><a href=\"#src-2\">2<\/a>,<a href=\"#src-5\">5<\/a><\/sup><\/td>\n<\/tr>\n<tr>\n<td>DPF<\/td>\n<td>Euro 4 or earlier<\/td>\n<td>No<sup><a href=\"#src-2\">2<\/a><\/sup><\/td>\n<\/tr>\n<tr>\n<td>Catalytic converter, DPF or GPF<\/td>\n<td>Euro 5 or Euro 6<\/td>\n<td>Yes<sup><a href=\"#src-2\">2<\/a>,<a href=\"#src-5\">5<\/a>,<a href=\"#src-6\">6<\/a><\/sup><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Euro 5 applies to vehicles registered from 1 January 2011, although some were registered earlier, and the government&#8217;s guidance says the Euro level is on the vehicle&#8217;s registration document (V5C)<sup><a href=\"#src-2\">2<\/a><\/sup>. See our <a href=\"\/advice\/euro-emissions-standards\/\">Euro emissions standards guide<\/a>.<\/p>\n<p>The rules are aimed at businesses: a business commits an offence if it supplies or fits a part that does not meet them, and &#8220;supply&#8221; includes offering or displaying a part for sale<sup><a href=\"#src-5\">5<\/a><\/sup>. Our guide to <a href=\"\/advice\/type-approval-and-the-law\/\">type approval and the law<\/a> covers the penalties.<\/p>\n<h2>Homologated, original, non-homologated and universal<\/h2>\n<ul>\n<li><strong>Original replacement:<\/strong> the vehicle manufacturer&#8217;s own part. It is allowed where an approved part is required, if it is marked and documented as the original replacement for your vehicle<sup><a href=\"#src-5\">5<\/a><\/sup>.<\/li>\n<li><strong>Homologated (type approved):<\/strong> an aftermarket part approved as a replacement for the vehicles on its approval<sup><a href=\"#src-3\">3<\/a><\/sup>.<\/li>\n<li><strong>Non-homologated:<\/strong> not approved, so it can be fitted only where the law does not require approval, such as a catalytic converter for a vehicle first registered before 1 March 2001 or a DPF for a Euro 4 or earlier vehicle<sup><a href=\"#src-2\">2<\/a><\/sup>.<\/li>\n<li><strong>Universal:<\/strong> a catalytic converter made to be adapted to many exhausts. BM Catalysts, for example, make their universal cats without necks so that pipe stubs of the required bore can be welded in<sup><a href=\"#src-8\">8<\/a><\/sup>. Where the law requires an approved part, one can be fitted only if its approval covers your vehicle<sup><a href=\"#src-5\">5<\/a><\/sup>.<\/li>\n<\/ul>\n<h2>Does the MOT check for a homologated part?<\/h2>\n<p>Not directly. The tester checks the visible emission control parts, such as the catalytic converter and DPF, and fails a vehicle if equipment fitted by the manufacturer is missing, obviously modified or obviously defective (on petrol vehicles, in full for those first used on or after 1 September 2002), or if a DPF has been tampered with. The emissions are measured too. None of these checks covers the approval mark<sup><a href=\"#src-9\">9<\/a><\/sup>.<\/p>\n<p>So a pass does not prove a part is approved, and fitting a non-approved part where the law requires an approved one is still an offence for the business that supplies or fits it<sup><a href=\"#src-5\">5<\/a><\/sup>. The road-use rules apply as well: a vehicle first used from 1 January 2001 must not be used on the road if it fails its emission limits because its exhaust has been altered or an emission control device is not in good and efficient working order, although it may be driven to a place where a faulty device is to be repaired or replaced<sup><a href=\"#src-10\">10<\/a><\/sup>.<\/p>\n<h2>What homologated means when you buy one<\/h2>\n<ul>\n<li><strong>Fit and Euro level.<\/strong> The approval ties the part to particular vehicles and their Euro level. BM Catalysts point out that parts for different vehicles and Euro levels can share the same housing and pipework yet differ inside, so a part that can be made to fit is not necessarily approved for your vehicle<sup><a href=\"#src-11\">11<\/a><\/sup>.<\/li>\n<li><strong>Emissions.<\/strong> A homologated part has been tested on a vehicle in place of the original<sup><a href=\"#src-3\">3<\/a><\/sup>, but it cannot make up for an engine fault: the cause of the old part&#8217;s failure has to be fixed first, or the new one can be damaged too<sup><a href=\"#src-12\">12<\/a><\/sup>. See <a href=\"\/blog\/failed-mot-emissions\/\">failed your MOT on emissions?<\/a><\/li>\n<li><strong>Warranty.<\/strong> Our catalytic converters and DPFs carry a 2-year warranty, 3 years on Premium silicon-carbide DPFs, covering manufacturing defects. BM Catalysts exclude, for example, impact damage, oil fouling and exhaust paste used in front of a catalytic converter<sup><a href=\"#src-12\">12<\/a><\/sup>. See <a href=\"\/advice\/warranty\/\">how to claim<\/a>.<\/li>\n<\/ul>\n<h2>How to tell if a part is homologated<\/h2>\n<ol>\n<li><strong>Look for the approval mark.<\/strong> A type-approved catalytic converter or DPF is permanently marked with an approval mark, the manufacturer&#8217;s name or trade mark, and its make and part number<sup><a href=\"#src-2\">2<\/a><\/sup>. Under the EU-derived rules the mark is a lower-case &#8220;e&#8221; in a rectangle followed by the number of the country that granted the approval, with the approval number next to it<sup><a href=\"#src-3\">3<\/a><\/sup>; 11 is the United Kingdom<sup><a href=\"#src-2\">2<\/a><\/sup>. Parts approved under the UN scheme carry a capital &#8220;E&#8221; mark instead<sup><a href=\"#src-1\">1<\/a><\/sup>. Wherever possible, the mark should be visible once the part is fitted<sup><a href=\"#src-3\">3<\/a><\/sup>.<\/li>\n<li><strong>Check the vehicle list.<\/strong> If your vehicle is not on the list that comes with the part, the part is not approved for it<sup><a href=\"#src-3\">3<\/a><\/sup>.<\/li>\n<li><strong>Look for a warning label.<\/strong> A part that is not type approved must be marked or labelled to say so: on a catalytic converter, &#8220;Illegal to supply for type-approved vehicles first used on or after 01\/03\/2001&#8221;; on a DPF, &#8220;Illegal to supply for vehicles approved to EC Regulation 715\/2007&#8221;<sup><a href=\"#src-2\">2<\/a><\/sup>.<\/li>\n<li><strong>Ask for the certificate.<\/strong> If in doubt, the government&#8217;s advice is to ask the manufacturer or distributor for a copy of the type-approval certificate<sup><a href=\"#src-2\">2<\/a><\/sup>.<\/li>\n<\/ol>\n<p>In our range, homologated parts have an H at the end of the part number (HP on Premium DPFs) and show Type Approved on the product page, which lists the vehicles, years and Euro level each part is catalogued for (see <a href=\"\/advice\/understanding-part-numbers\/\">BM Catalysts part numbers explained<\/a>). Each BM unit also has a serial number of six letters beginning with C or D, usually pin-stamped on its body: note it before fitting, as it is needed for any warranty query<sup><a href=\"#src-12\">12<\/a><\/sup>.<\/p>\n<h2>After Brexit: who approves parts now?<\/h2>\n<p>In the UK, approvals are issued by the Vehicle Certification Agency (VCA) on behalf of the Secretary of State for Transport, under the GB, UK(NI) and UN schemes; EU approvals are granted by the approval authorities of EU member states<sup><a href=\"#src-1\">1<\/a><\/sup>. The UK is a party to the UN agreement behind UN approvals<sup><a href=\"#src-13\">13<\/a><\/sup>, and those approvals continue to be accepted in Great Britain and Northern Ireland without any further approval<sup><a href=\"#src-14\">14<\/a><\/sup>. The 2009 Regulations still apply across the UK, were last updated in 2020, and still refer to the same EU-derived and UN approval standards<sup><a href=\"#src-5\">5<\/a><\/sup>.<\/p>\n<h2>Finding a homologated part for your vehicle<\/h2>\n<p>Every part we sell is manufactured by <a href=\"\/bm-catalysts\/\">BM Catalysts<\/a>. Every <a href=\"\/product-category\/catalytic-converter-dpf\/\">combined catalytic converter and DPF<\/a>, <a href=\"\/product-category\/catalytic-converter-gpf\/\">catalytic converter and GPF<\/a> and <a href=\"\/product-category\/scr-dpf\/\">SCR and DPF unit<\/a> in our range is type approved. Among our <a href=\"\/product-category\/catalytic-converter\/\">catalytic converters<\/a> and <a href=\"\/product-category\/dpf\/\">DPFs<\/a>, the parts without an H are mainly catalytic converters for older Euro 1 and Euro 2 vehicles and DPFs for Euro 3 and Euro 4 diesels. Most parts come with a fitting kit included, all carry at least a 2-year warranty and are backed by our <a href=\"\/returns\/#fitment-guarantee\">fitment guarantee<\/a>, and delivery is free to most of the UK, next working day on orders placed before 4pm, Monday to Thursday. Enter your vehicle below to see the parts catalogued for it, or choose it from the <a href=\"\/parts\/\">vehicle list<\/a>.<\/p>\n<div class=\"ch-sources\">\n<p><strong>Sources<\/strong> (accessed 3 October 2026)<\/p>\n<ol>\n<li id=\"src-1\">Vehicle Certification Agency, &#8220;What is Vehicle Type Approval?&#8221; (page updated 15 May 2024). <a href=\"https:\/\/www.vehicle-certification-agency.gov.uk\/vehicle-type-approval\/what-is-vehicle-type-approval\/\" rel=\"nofollow noopener\" target=\"_blank\">vehicle-certification-agency.gov.uk<\/a><\/li>\n<li id=\"src-2\">Department for Transport, &#8220;Catalytic converters and diesel particulate filters&#8221; (updated 30 May 2023). <a href=\"https:\/\/www.gov.uk\/government\/publications\/catalytic-convertors\/catalytic-converters-and-diesel-particulate-filters\" rel=\"nofollow noopener\" target=\"_blank\">gov.uk<\/a><\/li>\n<li id=\"src-3\">Commission Regulation (EC) No 692\/2008, Annex XIII: type approval of replacement pollution control devices (points 3 to 5). <a href=\"https:\/\/www.legislation.gov.uk\/eur\/2008\/692\/annex\/XIII\" rel=\"nofollow noopener\" target=\"_blank\">legislation.gov.uk<\/a><\/li>\n<li id=\"src-4\">BM Catalysts, &#8220;Get to know our part numbers&#8221; (2024). <a href=\"https:\/\/bmcats.com\/app\/uploads\/2024\/05\/Get-to-know-our-part-numbers-2024.pdf\" rel=\"nofollow noopener\" target=\"_blank\">bmcats.com<\/a><\/li>\n<li id=\"src-5\">The Motor Vehicles (Replacement of Catalytic Converters and Pollution Control Devices) Regulations 2009 (SI 2009\/1899), regulations 2 to 8 and the Schedule, as amended. <a href=\"https:\/\/www.legislation.gov.uk\/uksi\/2009\/1899\/contents\" rel=\"nofollow noopener\" target=\"_blank\">legislation.gov.uk<\/a><\/li>\n<li id=\"src-6\">Regulation (EC) No 715\/2007, Article 3 (definitions of &#8220;pollution control device&#8221;, &#8220;replacement pollution control device&#8221; and &#8220;OBD system&#8221;). <a href=\"https:\/\/www.legislation.gov.uk\/eur\/2007\/715\/article\/3\" rel=\"nofollow noopener\" target=\"_blank\">legislation.gov.uk<\/a><\/li>\n<li id=\"src-7\">BM Catalysts, company brochure (November 2023), page 7: manufacturing. <a href=\"https:\/\/bmcats.com\/app\/uploads\/2023\/12\/0074_BMC_Brochure_1123_web.pdf\" rel=\"nofollow noopener\" target=\"_blank\">bmcats.com<\/a><\/li>\n<li id=\"src-8\">BM Catalysts, &#8220;Universal catalysts&#8221;. <a href=\"https:\/\/bmcats.com\/universal-catalysts\/\" rel=\"nofollow noopener\" target=\"_blank\">bmcats.com<\/a><\/li>\n<li id=\"src-9\">DVSA, MOT inspection manual for private passenger and light commercial vehicles, section 8.2 (8.2.1.1 and 8.2.2.1: exhaust emission control equipment). <a href=\"https:\/\/www.gov.uk\/guidance\/mot-inspection-manual-for-private-passenger-and-light-commercial-vehicles\/8-nuisance\" rel=\"nofollow noopener\" target=\"_blank\">gov.uk<\/a><\/li>\n<li id=\"src-10\">The Road Vehicles (Construction and Use) Regulations 1986, regulation 61A(3) and (4). <a href=\"https:\/\/www.legislation.gov.uk\/uksi\/1986\/1078\/regulation\/61A\" rel=\"nofollow noopener\" target=\"_blank\">legislation.gov.uk<\/a><\/li>\n<li id=\"src-11\">BM Catalysts, &#8220;Euro level compliance&#8221;. <a href=\"https:\/\/bmcats.com\/euro-level-compliance\/\" rel=\"nofollow noopener\" target=\"_blank\">bmcats.com<\/a><\/li>\n<li id=\"src-12\">BM Catalysts, &#8220;Catalytic Converter Warranty &amp; Fitting Advice&#8221; (serial numbers, installation guide, warranty advice). <a href=\"https:\/\/bmcats.com\/app\/uploads\/2024\/01\/Catalytic-Converter-Warranty-Fitting-Advice.pdf\" rel=\"nofollow noopener\" target=\"_blank\">bmcats.com<\/a><\/li>\n<li id=\"src-13\">Vehicle Certification Agency, &#8220;UNECE Type Approval&#8221; (page updated 17 January 2024). <a href=\"https:\/\/www.vehicle-certification-agency.gov.uk\/vehicle-type-approval\/unece-type-approval\/\" rel=\"nofollow noopener\" target=\"_blank\">vehicle-certification-agency.gov.uk<\/a><\/li>\n<li id=\"src-14\">Vehicle Certification Agency, &#8220;Type Approval and the Protocol on Northern Ireland&#8221;, section 1, &#8220;Manufacturers with UNECE type approvals&#8221; (page updated 17 January 2024). <a href=\"https:\/\/www.vehicle-certification-agency.gov.uk\/publication\/type-approval-and-the-protocol-on-northern-ireland-from-1-january-2021\/\" rel=\"nofollow noopener\" target=\"_blank\">vehicle-certification-agency.gov.uk<\/a><\/li>\n<\/ol>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Gehomologeerd betekent typegoedgekeurd. Wanneer de wet een typegoedgekeurde katalysator of roetfilter eist en hoe u controleert of een onderdeel dat is.<\/p>\n","protected":false},"author":31,"featured_media":26956,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[28],"tags":[],"class_list":["post-26955","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-catalytic-converters"],"_links":{"self":[{"href":"https:\/\/www.cathive.co.uk\/nl\/wp-json\/wp\/v2\/posts\/26955","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cathive.co.uk\/nl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cathive.co.uk\/nl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cathive.co.uk\/nl\/wp-json\/wp\/v2\/users\/31"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cathive.co.uk\/nl\/wp-json\/wp\/v2\/comments?post=26955"}],"version-history":[{"count":1,"href":"https:\/\/www.cathive.co.uk\/nl\/wp-json\/wp\/v2\/posts\/26955\/revisions"}],"predecessor-version":[{"id":26957,"href":"https:\/\/www.cathive.co.uk\/nl\/wp-json\/wp\/v2\/posts\/26955\/revisions\/26957"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.cathive.co.uk\/nl\/wp-json\/wp\/v2\/media\/26956"}],"wp:attachment":[{"href":"https:\/\/www.cathive.co.uk\/nl\/wp-json\/wp\/v2\/media?parent=26955"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cathive.co.uk\/nl\/wp-json\/wp\/v2\/categories?post=26955"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cathive.co.uk\/nl\/wp-json\/wp\/v2\/tags?post=26955"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}