Vauxhall Vectra Door Lock Mechanism Replacement Parts

No, the Vectra B (1995–2002) and Vectra C (2002–2008) are different generations with different door structures, so the lock mechanisms are not interchangeable. Always source a mechanism from the correct generation to match your car. Confirm the exact fit with the breaker using your registration number.

This is a critical year to be careful with, as the Vectra C replaced the Vectra B in 2002, meaning a 2002 car could be either generation depending on when in the year it was built. A Vectra C mechanism will not fit a Vectra B and vice versa, so you need to confirm which generation your car is before ordering. Give the breaker your registration to make sure they supply the right part.

Yes, it matters for the front doors — the door geometry differs between 3-door and 5-door body styles on the Vectra C, so the lock mechanisms are not always the same. Always tell the breaker whether your car is a 3-door or 5-door hatchback as well as which side (NS nearside passenger side, or OS offside driver side) you need. Rear doors on the 5-door are their own fitment separate from the fronts.

Trim level — whether Club, Exclusiv, SRi, Elite or any other — does not affect which door lock mechanism physically fits, as the mechanism is determined by generation, body style, and side (NS or OS). You may find cosmetic differences such as plastic finisher colour between trims, but the lock mechanism itself is the same fitment. Tell the breaker your generation, body style, and the side you need rather than worrying about trim.

For a Vectra C (2002–2008), you should tell the breaker the generation (Vectra C), the body style (3-door or 5-door hatchback, or saloon or estate), the side required (NS for nearside, which is the passenger left-hand side), and whether it is a front door. The Vectra C received a facelift around 2005, so it is worth confirming with the breaker whether that affects the lock mechanism for your specific car by quoting your registration. Providing your reg is the most reliable way to make sure the part is correct.

The Signum shares its platform with the Vectra C and there is some parts commonality between the two, but the Signum is a distinct five-door body with different rear door arrangements, so you should not assume the lock mechanisms are interchangeable without checking. Confirm directly with the breaker, giving them both the donor car details and your own registration, as they will be best placed to verify whether the specific mechanism crosses over.