Rear Air Suspension Strut For Lexus LS430 UCF30 With Height Control 48090-50110 48080-50110
Rear Air Suspension Strut For Lexus LS430 UCF30 With Height Control 48090-50110 48080-50110 Latest Revision
This rear air suspension strut is the genuine-style replacement for the Lexus LS430 (UCF30, 2001–2006) with factory air suspension. It matches the OEM OE families 48090-50110/50120/50130/50140 (Rear Left) and 48080-50110/50120/50130/50140 (Rear Right) — side-specific integrated assemblies of air spring and shock absorber (top yoke / bottom eye mounting) that restore the factory ride height, air leveling and damping control of the LS430 air suspension system. Every unit is 100% air-leak tested before shipment and with an 18-month warranty.
Product Specification Sheet
| Item | Content |
| Product Name | Rear Air Suspension Strut - Air Spring + Shock Absorber Assembly |
| Genuine OE No. (Rear Left) | 48090-50110 |
| Genuine OE No. (Rear Right) | 48080-50110 |
| Note on Number Format | No-dash variants (4809050110 / 4808050110) are the same numbers in catalog format |
| Aftermarket Cross No. (Rear Left) | Arnott AS-3074, JAPANPARTS MM-AS192, ASHIKA MA-AS192, JAPKO MJAS192, A.S.P. MQ-AS192, GOLD GAS192 |
| Aftermarket Cross No. (Rear Right) | Arnott AS-3073, JAPANPARTS MM-AS191, ASHIKA MA-AS191, JAPKO MJAS191, A.S.P. MQ-AS191, GOLD GAS191 |
| Applicable Brand | Lexus |
| Vehicle Line | LS430 (UCF30) |
| Model Years | 2001-2006 (spareto fitment: LEXUS LS 2000-2006) |
| Damping Control | Factory electronically-controlled damping (LS430 air suspension damping-force control) - solenoid/electrical connector on the strut; confirm against original unit by VIN |
| Common Models | LS430 with factory air suspension (air suspension fitted on most LS430 markets/trims - confirm by VIN) |
| Installation Position | Rear axle - side-specific: Rear Left = 48090 series, Rear Right = 48080 series |
| Paired Numbers | MM-AS191 (RR) <-> MM-AS192 (RL) - sold as axle pair (per JAPANPARTS paired article) |
| Drive Type | RWD (rear-wheel drive) |
| Structure | Air spring + shock absorber integrated assembly (top yoke / bottom eye mounting) |
| Bellows Material | High-strength compound rubber (resistant to extreme temperatures and aging) |
| Air Tightness | 100% individually air-leak tested before shipment |
| Packing | Individual protective packaging; left/right pair set available |
| Warranty | 18 months |
| Shipping | Sea / air / courier; export-standard packaging |
Top Selling Points
| Selling Point | Detail |
| Complete Integrated Assembly | Air spring + shock absorber in one unit (top yoke / bottom eye) - direct replacement, no part matching required |
| Side-Specific OE Coverage | Correct rear left (48090 series) and rear right (48080 series) units - full LS430 rear-axle coverage |
| Full LS430 Generation Coverage | Fits LS430 (UCF30) 2001-2006 - spareto also lists LEXUS LS 2000-2006 |
| Restores Factory Ride | Replicates OEM interface, air-spring rate and damping calibration; original ride height and leveling restored |
| OE-Crossed Aftermarket Brands | Rear left: AS-3074 / MM-AS192 / MA-AS192 / MJAS192; rear right: AS-3073 / MM-AS191 / MA-AS191 / MJAS191 - global availability |
| 100% Air-Leak Tested | Every unit individually pressure-tested before shipment to eliminate slow leaks and sagging |
| Paired Numbers for Axle Set | MM-AS191 <-> MM-AS192 are factory-designated paired articles - same-axle replacement keeps leveling consistent |
| 18-Month Warranty | Extended 18-month warranty + pre-sale VIN check + after-sales technical support |
About Us
FAQ:
Q1: Which OE numbers are for which side? Rear Left: 48090-50110, 48090-50120, 48090-50130, 48090-50140. Rear Right: 48080-50110, 48080-50120, 48080-50130, 48080-50140. These are side-specific units — never mix left with right.
Q2: Which vehicles does this fit? Lexus LS430 (UCF30), 2001–2006 with the factory air suspension (spareto fitment lists LEXUS LS 2000–2006). Confirm the exact model/year and that the car has air suspension (not coil springs) by VIN.
Q3: What do the suffixes 110 / 120 / 130 / 140 mean? They are successive revision numbers of the same side-specific strut (110 → 120 → 130 → 140); the higher number is the newer revision. Match the exact number stamped on your original unit.
Q4: Is this the complete strut or just the air spring? The complete assembly — air spring bellows and shock absorber integrated into one strut, with top-yoke/bottom-eye mounting, ready to install as a direct replacement.
Q5: Does the LS430 rear air strut have electrical damping? The LS430 factory air suspension includes damping-force control — the strut carries the damping solenoid/electrical connector. Always confirm the connector against the original unit by VIN before ordering.
Q6: Do I need to replace both rear sides at the same time? Same-axle pair replacement is strongly recommended — the aftermarket parts are factory-designated paired articles (MM-AS191 ↔ MM-AS192), and an old unit on the other side causes uneven height and leveling.
Q7: What should I pay attention to during installation? Release the air suspension pressure per the workshop manual; protect the air fitting and electrical connector from dirt; after installation start the car and let the height control system re-level; check both sides' height and leaks before a road test.
Q8: Warranty policy and shipping damage? 18-month warranty under normal use. For shipping damage, inspect within 48 hours of receipt and send photos/video — the seller arranges a replacement.
Q9: Service life and maintenance? Depends on road conditions and climate. Keep the bellows clean and check for cracks during routine service; replace the complete unit if a bellows leak is found.
Q10: Are aftermarket alternatives available? Yes — Rear Left: Arnott AS-3074, JAPANPARTS MM-AS192, ASHIKA MA-AS192, JAPKO MJAS192 (plus A.S.P. MQ-AS192, GOLD GAS192). Rear Right: Arnott AS-3073, JAPANPARTS MM-AS191, ASHIKA MA-AS191, JAPKO MJAS191 (plus A.S.P. MQ-AS191, GOLD GAS191).
Compiled: 2026-08-25 ｜ OE family verified via spareto.com: 4809050110/120/130 (Rear Left) and 4808050110/120/130 (Rear Right) = genuine LEXUS OE "Air spring strut, air suspension strut"; JAPANPARTS MM-AS192 = "Fitting Position: Left Rear" with OE ref 4809050110/120/130, MM-AS191 = "Fitting Position: Right Rear" with OE ref 4808050110/120/130, each listing paired article + crosses (Arnott AS-3074/AS-3073, ASHIKA MA-AS192/191, JAPKO MJAS192/191, A.S.P. MQ-AS192/191, GOLD GAS192/191); fitment LEXUS LS 2000–2006. The 140 revision and no-dash variants provided by the supplier table — confirm by VIN. Damping-control classification per the LS430 factory air suspension system — confirm against the original unit. 18-month warranty standard.
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