Parts for your 2004 Toyota Land cruiser-Control arms

2004 Toyota Land Cruiser control arms — what’s fitted and how to look after them

Technical references including the Toyota Land Cruiser 100 Series Repair Manual (Chassis/Suspension), the Toyota Electronic Parts Catalogue, and aftermarket workshop guides (Gregory’s/Haynes) state that 2004 Land Cruiser 100 Series models with independent front suspension (UZJ100/HDJ100) use upper and lower front control arms with torsion bars. The 105 Series (HZJ105/FZJ105) sold alongside it in AU/NZ runs a live front axle with radius arms instead, so “control arms” aren’t used on the front of those models. Rear suspension on both uses trailing arms and a panhard rod rather than traditional control arms. If the vehicle is a 100 Series IFS, control arms are absolutely relevant.

On a 2004 Land Cruiser 100 Series with IFS, the control arms locate the front hubs, set caster and camber, and let the wheels move smoothly through their travel. The lower arm works with the torsion bar, while both upper and lower arms carry bushes and ball joints that cop plenty of load on corrugations, beach runs, and towing duties. Keeping these bits healthy means better tyre wear, sharper steering, and less wandering on the highway.

As part of regular servicing, they should be inspected for torn bushes, loose or dry ball joints, split dust boots, and any play. Tell-tales include clunks over potholes, steering shimmy, uneven or inside-edge tyre wear, and a tendency to pull or tramline. After any hard hit off-road, check the arms for bends or cracked welds.

Replacement tips: it’s smart to do arms or bushes in axle pairs, and always book a wheel alignment straight after. Torque pivot bolts at normal ride height, not with the suspension hanging, so the bushes sit neutral. If cam bolts are seized in the sleeves (common on older 100s), budget for new hardware. For vehicles lifted around 40–50 mm, aftermarket upper control arms can help recover caster and ball-joint angle, improving straight-line stability and tyre life. Choose quality rubber or OE-style bushes for road comfort, or reputable HD options if the vehicle spends serious time loaded or off-grid. Follow factory torque specs and use new cotter pins on ball joints. While you’re there, give the sway-bar links, bump stops, and front wheel bearings a once-over so the whole front end stays tight and tidy.

• Service check: every 10,000–15,000 km or before big trips
• Always align after any control-arm, bush, or ball-joint work
• Inspect after water crossings and dusty outback runs

Does a 2004 Land Cruiser have control arms?

Yes, if it’s a 100 Series with independent front suspension (UZJ100/HDJ100). Those use upper and lower front control arms. The 105 Series (HZJ105/FZJ105) uses a live axle with radius arms up front, so traditional control arms don’t apply there.

What are the signs the control-arm bushes or ball joints are worn?

Clunks over bumps, vague steering, braking shimmy, and uneven or rapid inside-edge tyre wear are common. Visual checks may show cracked bushes, leaking or split boots, rust trails, or movement when levering the arm with a pry bar. Any play means it’s time for parts and an alignment.

Do they need aftermarket upper control arms with a 2-inch lift?

Often, yes. A quality UCA helps restore caster, improves ball-joint angles, and can tidy up alignment to reduce tyre wear and wander. It’s not mandatory on every setup, but it’s a popular, practical upgrade on lifted 100 Series used for touring or towing.