Caster Arm — Left
OEM Part Number
48670-24020 [Verified]
What It Is
Left-side front lower control arm #2, commonly called the “caster arm”. Mirror of 48660-24020 Caster Arm Right. Fore-aft arm that sets caster angle in the Front Suspension double-wishbone system. Caster angle is not adjustable from factory [Probable].
The rubber bushings in this arm are the most common front suspension failure point on the SC430. See Caster Arm Bushing Degradation.
Fitment
SC430 (UZZ40) 2001–2010, all model years [Verified]. Also fits GS300/GS400/GS430 (S160 platform) [Probable].
Pricing — OEM
~$185 AUD (April 2026) [Verified]
Aftermarket Bushing Alternatives
Same aftermarket bushing options as the right side — see 48660-24020 Caster Arm Right for full table. Key options:
| Brand | Part Number | Price (April 2026) | Confidence |
|---|---|---|---|
| FIGS Engineering | G1149 | ~$180 USD | [Reported] |
| SuperPro | SPF4186K | ~$60–80 USD | [Reported] |
| Febest | TAB-185 | Varies | [Reported] |
Note: Bushing replacement requires a hydraulic press [Probable].
Where to Buy
- OEM arm: Lexus dealer, LexusPartsNow.com, Amayama
- FIGS bushings: ShopFIGS.com (FIGS Engineering)
- SuperPro/Febest: eBay, Amazon, suspension parts retailers
Related Faults
- Caster Arm Bushing Degradation — most common front suspension failure
Sources
Research data from OEM parts listings and forum threads (April 2026 ingest).