Second Hand Vauxhall Cavalier Door Lock Mechanism

The Cavalier ran across three main generations: Mk1 (1975–1981), Mk2 (1981–1988), and Mk3 (1988–1995), and the door lock mechanism design differs between these generations, so you must match the generation to your car. A mechanism from a Mk2 will not cross over to a Mk3, and mixing generations is a common pitfall when searching for used parts. Always confirm the generation with your registration plate before approaching a breaker.

Yes, it matters — the front door shell and frame dimensions differ between 3-door and 5-door body styles, and the lock mechanism is fitted to the door frame itself, so a front mechanism from a 3-door Cavalier Mk3 is not a straight swap for a 5-door front door. The rear doors on a 5-door are a separate consideration again. Always tell the breaker your exact body style and which door position you need.

Yes, door lock mechanisms are side-specific: nearside (NS) is the passenger/left side and offside (OS) is the driver/right side, and these are not interchangeable. In the UK, OS is the kerb-side driver door, so make sure you identify exactly which door has the faulty lock before contacting a breaker. Getting this wrong is one of the most common ordering mistakes, so double-check before you buy.

The Cavalier Mk3 ran from 1988 to 1995, and while the generation shares the same basic platform throughout, there were detail changes over its production run that could affect whether a mechanism from an early car fits a late one. This is exactly the kind of cross-year question you should put to the breaker directly, quoting both registration years and the door position, so they can check against their stock. Do not assume fitment across a wide year spread within the Mk3 without the breaker confirming it.

For door lock mechanisms, trim level generally does not affect fitment — the door structure and lock mechanism are determined by generation, body style, and side, not by whether the car is an L, GL, GLS, or CDi. You may find cosmetic differences such as door furniture or interior handles that vary by trim, but the core lock mechanism in the door frame should cross between trim levels within the same generation and body style. Confirm with the breaker against your registration to be sure, but trim is not the key variable here.

The Cavalier Mk3 was offered in saloon, hatchback, and estate body styles, and the front door lock mechanisms are shared across body styles within the same generation because the front door structure is the same. However, the rear door arrangements differ — the estate has different rear doors to the hatchback or saloon — so if you need a rear door mechanism, make sure you specify estate to the breaker. Always quote your body style, door position, side (NS or OS), and registration when getting a quote.