Symptoms
Torn ball-joint boots weeping grease, clunks over bumps, and vague steering. Worn lower control arm bushings add knocks of their own.
The fix, step by step
- Either replace the whole lower control arm with its new ball joint and bushings, or press out the old joint and press in an aftermarket one (owners cite MOOG K500017 and Sankei 555).
- Make sure the grease fitting faces an accessible direction, and grease the new joint if it shipped dry.
- Buy KDSS or non-KDSS parts to match your truck, then align it.
Tools & part numbers
- Ball-joint press
- pickle fork or joint separator
- torque wrench
- grease gun
- lower control arm or ball joint
Where to buy the parts
Lower ball joint, GX 470/120 SeriesCruiserTeq ↗Amazon ↗
Ball joint kit, GX 470CruiserTeq ↗Amazon ↗
Front control arms, 2005 GX 470 (match KDSS/non-KDSS)RockAuto ↗Amazon ↗
SuperPro front lower control arm set, GX 470 non-KDSSCruiserTeq ↗Amazon ↗
Hunting a used or discontinued part? Search eBay Motors for Lexus GX 470 parts →
Rated for a competent home mechanic with a decent tool kit. Confirm torque figures, fluids and procedures against the factory service manual for your VIN, support the truck on stands rather than a jack, and work at your own risk (disclaimer). Some parts links are affiliate links, which pay us a small commission at no cost to you.