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SKU: 3440190 | UPC: 197244040050
KYB 2019-2021 Lexus ES300h Base Luxury Ultra Luxury / 2019-2025 Lexus ES350 Base F Sport Luxury Ultra Luxury Gas-a-Just Shock - Rear
The KYB Gas-a-Just Rear Shock part number 3440190 delivers firm ride control for 2019-2021 Lexus ES300h Base Luxury Ultra Luxury and 2019-2025 Lexus ES350 Base F Sport Luxury Ultra Luxury models. This monotube shock uses high-pressure nitrogen gas for consistent damping on every corner. It restores original handling precision and reduces body roll for confident driving.
Key Features
- Monotube High-Pressure Gas Design: Delivers fade-resistant performance with nitrogen gas charge to maintain tire contact and stability at all speeds
- Application-Specific Valving: Precision-tuned for Lexus ES300h and ES350 suspension dynamics to provide balanced firmness without harshness
- Seamless Cylinder Construction: Eliminates internal weak points for long-lasting durability under high-stress conditions
- Heavy Gauge Calibrated Steel Body: Withstands road impacts and corrosion for reliable service life
- Multi-Lip Oil Seals: Minimize fluid bypass and friction for smoother operation and extended seal life
Product Notes
- Direct OE replacement with extended length 22.05 inches compressed length 13.58 inches and stroke 8.46 inches
- Replace shocks in pairs for even ride height and handling balance
- Shipping box dimensions 21.65 x 3.94 x 3.94 inches product weight 5.07 lbs
Installation Notes
- Professional installation recommended.
- Bolt-on design uses existing factory mounting locations eyelet top and bottom bushings S1-509 and S1-323 included
- Torque mounts to manufacturer specifications no additional hardware required
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2019-2021 | Lexus | ES300h | Base |
| 2019-2021 | Lexus | ES300h | Luxury |
| 2019-2021 | Lexus | ES300h | Ultra Luxury |
| 2019-2025 | Lexus | ES350 | Base |
| 2019-2021 | Lexus | ES350 | F Sport |
| 2019-2025 | Lexus | ES350 | Luxury |
| 2019-2025 | Lexus | ES350 | Ultra Luxury |
Why Choose KYB?
- Largest shock absorber manufacturer worldwide with OE supplier status to vehicle makers
- Over 70 years of engineering expertise in ride control components
- Every shock rigorously tested for fit form and performance matching OE standards
Frequently Asked Questions
-
Q: Will this fit my 2023 Lexus ES350 Luxury?
A: Yes part 3440190 fits 2019-2025 Lexus ES350 Base Luxury and Ultra Luxury models rear position only -
Q: What material is used in construction?
A: High-strength calibrated steel body with monotube internals and premium synthetic oil for heat resistance -
Q: What is the warranty coverage?
A: KYB Gas-a-Just shocks carry a limited lifetime warranty against manufacturing defects when installed properly
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Secure cardboard box 21.65 x 3.94 x 3.94 inches
- Weight: 5.07 lbs
KYB
KYB offers a complete line of shock absorbers, struts, and strut assemblies for cars, trucks, SUVs and Cross-overs. We also design and manufacture steering stabilizers, and provide a full line of shock and strut accessories including mounting hardware, coil spring insulators, coil springs, strut mounts, jounce bumpers, and bellows. KYB is one of the world’s largest suppliers of shocks and struts for new vehicle manufacturers. Our products can be found on some of the most popular cars, SUVs and trucks in North America. Because we make ‘original equipment’ we know exactly how vehicles perform and handle when new, and we can help keep them operating as designed, for as long as they’re on the road. The KYB catalog includes the following models: Excel-G, Strut-Plus, Gas-a-Just, MonoMax, Truck-Plus, KYB JAOS, Truck-Plus, Leveling Assembly, Strut Mounts and Boots, Steering Stabilizers, Self-Leveling & Electronic Shocks.
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Shop shocks and struts at Black Ops Auto Works for improved ride control, handling, stability, comfort, towing support, off-road performance, and suspension replacement. This collection includes shock absorbers, monotube shocks, gas shocks, hydraulic shocks, strut assemblies, front struts, rear shocks, coil-over shocks, reservoir shocks, steering dampers, suspension hardware, and vehicle-specific dampers for cars, trucks, SUVs, Jeeps, off-road builds, and performance vehicles. Use this Shocks and Struts collection to find the right suspension upgrade by vehicle, ride height, driving style, and product type. Replacement shocks and struts help restore ride quality, performance shocks improve control and stability, heavy-duty truck shocks support larger vehicles and lifted setups, and off-road shocks help improve durability and control on rough terrain. Shop Shocks and Struts by Brand Black Ops Auto Works carries shocks, struts, and suspension dampers from trusted brands including Bils...
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