SUPERPRO Cross Member Bushes with Fitting Position Front Axle, Rear Axle for HOLDEN STATESMAN WK

A crossmember is a structural beam that runs across a 4WD's chassis, tying the rails together and carrying parts of the suspension or driveline. Cross member bushes sit where a crossmember, or a subframe bolted to it, meets the chassis or the component it supports. They hold that joint firmly while taking the edge off vibration, shock and noise. On a 4WD, the crossmembers carry loads that a road car never sees: a heavy front end, a transfer case working hard in low range, and a chassis twisting across rough ground. Sound cross member bushes help keep everything bolted to them where it should be. Use the vehicle search to find cross member bushes to suit your WK STATESMAN.

What Do WK STATESMAN Cross Member Bushes Do?

Locating What the Crossmember Carries

On many independent front 4WDs, the front crossmember carries the lower control arm mounts and sometimes the steering rack. Further back, a crossmember usually supports the rear of the gearbox and transfer case. Where a crossmember or subframe is rubber mounted, its bushes decide how firmly those components are held in place.

Isolating Noise and Vibration

The bushes stop vibration from the driveline and suspension travelling straight into the chassis and body. That keeps cabin noise down and reduces the harshness that would otherwise reach the driver through the floor and seat.

Allowing Controlled Movement

A 4WD chassis flexes as it crosses uneven ground, and the driveline moves under torque. Cross member bushes allow a small, controlled amount of movement at those joints, so the loads are spread rather than concentrated at the bolts.

Where Are Cross Member Bushes Found on Your WK STATESMAN?

The layout varies a lot between vehicles. On some 4WDs, the crossmembers are welded or bolted solid to the chassis and carry bushes only where suspension arms or driveline mounts attach. On others, a front subframe or crossmember is mounted to the chassis through rubber or polyurethane bushes, and those bushes carry the full front suspension load.

The gearbox and transfer case crossmember often carries a mount or bush that supports the back of the driveline. Some vehicles also use bushes or washers at outriggers and brackets attached to crossmembers.

Because the layout differs so much, the product details and fitment for your vehicle are the reliable guide to which bushes it uses.

What Types of WK STATESMAN Cross Member Bushes Are There?

Rubber Bushes

Factory crossmember bushes are usually rubber. Rubber isolates noise and vibration well, which keeps the cabin quiet. Over time it can soften, crack and perish, especially near heat and oil from the engine, gearbox and exhaust.

Polyurethane Bushes

Polyurethane bushes are generally firmer and hold their shape under load. They resist oil and heat better than rubber in many applications and can keep components more precisely located. The trade-off can be more noise and vibration reaching the cabin, which matters more on some vehicles than others.

WK STATESMAN Supplement Washers and Inserts

Some crossmember mounts use washers or inserts alongside the main bush to limit movement or take up wear. These are often renewed when the bushes are replaced.

WK STATESMAN Crossmember Spacers

Crossmember spacers are related but different. They lower a crossmember or the components on it to restore driveline or suspension angles after a lift. They are a geometry correction rather than a bush, and they are usually part of a broader lift setup.

How Do You Know WK STATESMAN Cross Member Bushes Are Worn?

Worn crossmember bushes often show up as noise and vibration first. A clunk when taking off, changing gear or shifting between drive and reverse can point to the driveline moving on a worn crossmember mount. A thump from underneath over bumps can point to a subframe moving on its bushes.

Vibration through the floor or the gear lever, especially under load or at certain speeds, can come from a worn transmission crossmember bush letting the driveline sit out of line.

On vehicles where the front crossmember or subframe carries the suspension, worn bushes can make the steering feel vague or let the vehicle shift under braking, much like worn control arm bushes.

Inspection usually confirms it. Look for rubber that has cracked, split, squashed out or separated from its sleeve, signs of metal-to-metal contact, or a crossmember sitting lower on one side than the other.

Engine mounts, gearbox mounts and driveline joints can all cause similar symptoms, so a thorough inspection is worth doing first.

WK STATESMAN Lifted, Loaded and Towing Considerations

Lifted WK STATESMAN

A lift does not usually change crossmember bushes directly, but it changes the angles around them. On an independent front 4WD, lifting can steepen the CV joint angles and the control arm angles. Some lifts use crossmember or diff drop spacers to bring those angles back, which puts the crossmember mounts under different loads. Worn bushes in that setup can let the components move further than the correction allows for.

Loaded and Touring WK STATESMAN

A bull bar and winch add weight to the front crossmember area on many vehicles. Every bump passes that load through the mounts. Loaded touring vehicles can wear these bushes faster, especially on corrugated roads.

WK STATESMAN Towing and Low Range

Towing and low-range work put high torque through the driveline. That torque tries to twist the gearbox and transfer case, and the crossmember mount resists it. A worn mount lets the driveline move further under load, which can cause clunks and vibration and put extra strain on the tailshafts and joints.

WK STATESMAN Chassis Flex

Off road, the chassis twists as the wheels articulate. Crossmember bushes absorb some of that movement at the mounting points. Over years of off-road use, that constant working can wear them out even if the vehicle is driven gently on the road.

What Comes With WK STATESMAN Cross Member Bushes?

Kits vary by vehicle and mount. Some cover one mounting point, others a full crossmember or subframe. Sleeves, washers and lubricant may or may not be supplied, and bolts are often sold separately. Check the product details for which mounts the kit covers and what is included.

Should You Replace the WK STATESMAN Bushes or the Crossmember?

New bushes are usually the right fix when the crossmember is straight, free of cracks and the mounting holes or housings are in good condition. That covers most cases of noise, vibration or movement from a worn mount.

The crossmember itself needs attention when it is bent from an impact, cracked around a mount, or corroded to the point where the metal is weakened. A crossmember that has taken a heavy hit from a rock or log is worth inspecting closely, since damage there can affect the driveline and suspension it carries.

Fitting WK STATESMAN Cross Member Bushes

Replacing crossmember bushes often means supporting the engine, gearbox or suspension while the crossmember is loosened or removed, so it is a job for a qualified technician. The vehicle is supported on rated stands, and whatever the crossmember carries is supported separately before any bolts are removed.

The old bushes are removed, the mounts cleaned and checked, and the new bushes fitted with any sleeves or washers supplied. Suspension-related bush bolts are tightened at ride height, and all fasteners are torqued to specification. Where the crossmember carries suspension or steering components, a wheel alignment is required afterwards. A road test, including take-off, gear changes and low-range work where relevant, confirms the result.

Find the Right WK STATESMAN Cross Member Bushes with Formula 4x4

Use the vehicle search, then identify which crossmember mount is causing the problem. Book a wheel alignment if the crossmember carries suspension or steering parts.

If you are unsure what your WK STATESMAN needs, contact the Formula 4x4 team.