Mazda MX-5 Camshaft Replacement Parts

Yes, every Mazda MX-5 has camshafts — the engine is a conventional inline four-cylinder petrol unit, and all variants across every generation use a DOHC (dual overhead camshaft) layout, meaning there are two camshafts per engine. Camshaft replacement is not unusual on higher-mileage examples, typically arising from wear, oil starvation damage, or a timing chain or belt failure. Because the MX-5 has always been a petrol-only, naturally aspirated car in standard UK form, there are no diesel or turbo camshaft variants to worry about on this model.

The NA (Mk1) ran from 1989 to 1997 and the NB (Mk2) from 1998 to 2005, and while both generations used 1.6 and 1.8 petrol engines, the engine codes changed between generations — the NA used the B6 (1.6) and BP (1.8) series, while the NB continued with revised BP variants alongside later updates. A camshaft follows the engine code, not the generation badge, so you should match on engine code first; an early NB 1.8 and a late NA 1.8 may share a code, but you must confirm the specific code from your V5 or a VIN check and verify interchange with the breaker before buying.

No — the NC (Mk3, 2005–2015) and ND (Mk4, 2015–present) use completely different engines; the NC used the MZR 2.0 and 1.8 four-cylinder engines, while the ND moved to the Skyactiv-G 2.0 and 1.5 units, which are entirely different engine families with different camshaft profiles and dimensions. These will not interchange, and a breaker will need your engine code (visible on the V5 or via a VIN check) to supply the correct part for whichever generation you own.

Trim level makes no difference whatsoever to camshaft fitment — Sport, Icon, SE, Venture Edition and other UK trim names refer to equipment and cosmetic specification, not engine internals. What matters is the engine code, which you can find on your V5 logbook or through a VIN check, since two cars of different trims but the same engine code will use the same camshafts. When sourcing from a breaker, give them your engine code and registration rather than the trim name.

The NC ran from 2005 to 2015 and received a facelift around 2008, with a further refresh around 2012–2013, but camshaft fitment is determined by engine code rather than facelift year. If a 2006 NC and a 2013 NC share the same engine code — which is possible within the MZR engine family — the camshaft may well interchange, but ancillary or mounting details can sometimes change quietly mid-production, so you should confirm the specific engine codes match and check with the breaker against both registrations before purchasing.

Yes, it matters — DOHC engines like those in the MX-5 have a separate inlet (intake) camshaft and exhaust camshaft, and they are not interchangeable with each other. When contacting a breaker, specify whether you need the inlet or exhaust cam, confirm your engine code from the V5, and if possible describe the symptoms or damage so they can advise whether you need one or both. A good breaker will often be able to identify the correct part from your registration alone, but having the engine code ready will speed things up.