Do I need a mod plate to fit touring seats to my 4WD?

Yes — in almost every case you will. Fitting touring seats, or a seat adapter kit, to your 4WD is a vehicle modification, and to run it on-road it must be certified by a VASS signatory engineer in Victoria (or the equivalent registered signatory scheme in your state or territory), who inspects the work and issues the modification certificate — the “mod plate”. Until it’s certified, the modification is intended for off-road use.

That’s the short answer. Here’s what it means when it’s your ute or wagon on the hoist.

Why a seat swap has to be certified

Your seats and their mounts are part of the vehicle’s safety system, so changing them — even for a better seat — moves the vehicle away from its original manufacturer specification. An engineer needs to confirm the new setup is sound before signing off on it. Our touring seats are ADR approved; that approval covers the seats themselves. Installing them — or fitting a seat adapter kit — is a vehicle modification that must be certified by a VASS signatory engineer in Victoria, or the equivalent signatory scheme in your state or territory, who issues the modification certificate (“mod plate”). Requirements vary by state. Until certified, the modification is intended for off-road use.

How the mod plate process works

In broad terms: the kit is fitted properly to suit your vehicle, then a signatory engineer inspects the finished job and, if satisfied, issues the certificate. VASS is Victoria’s scheme specifically — every other state and territory runs its own equivalent, so the exact paperwork, inspection steps and cost differ depending on where your vehicle is registered. The right move is to check your own state or territory’s requirements before you start.

To make that easier, some of our kits are supplied with supporting engineering documentation. The seat adapter kit to suit the GU Nissan Patrol, for example, comes with an engineering approval report to assist in obtaining your mod plate. What’s included varies from kit to kit, so check the individual product page for your vehicle.

The one exception: factory in-seat airbags

There’s an important limit. We do not recommend seat conversions for vehicles with factory in-seat airbags, as removing an airbag-equipped seat generally cannot be certified. If your vehicle has airbags built into the seats, a mod plate typically won’t be achievable — so it’s worth confirming what your particular model is fitted with before you buy donor seats or a kit. If you’re not sure, get in touch and we’ll help you work it out.

What’s actually involved in fitting?

That depends on the kit. Each product page spells out exactly what suits your vehicle — the donor seats it’s built around, whether it’s a bolt-in installation or needs minor modification, and anything to watch for on specific variants. We don’t list a spec unless it applies to your vehicle, so the product page is always the source of truth for fitment. If a detail isn’t stated there, contact us rather than assume.

Where to start

If you’re weighing up a seat upgrade, browse our ADR approved touring seats and the range of seat adapter kits to suit your 4WD. Find the kit that matches your vehicle, read its fitment notes, then plan your certification with a signatory engineer in your state or territory. Get those two things lined up and a seat swap is a straightforward, properly certifiable upgrade — one your back will thank you for on the next long haul.