KYB 551127 front left suspension strut assembly for the 2006-2013 Lexus IS250 and other vehicles is a high-pressure monotube gas strut. Sold as an OE monotube replacement, it damps spring and wheel movement at the front left corner.
- Gas-a-just monotube with an air-free hydraulic piston and valve area plus a high-pressure nitrogen gas area with a floating piston
- Ultra-smooth triple chrome plated piston rod to reduce seal wear
- Higher gas pressure that responds quickly to improve steering response
- Helps keep electronic safety systems performing as designed
- Gas-a-Just monotube design for vehicles that work, tow and have larger, heavier tires and wheels
- High pressure monotube design separates the gas and oil for fade-free operation and instant response
Quick facts
- Part: KYB 551127 suspension strut assembly
- Fits: 2006-2013 Lexus IS250 and other vehicles
- Position: Front left
- Condition: New
Fluid leaking at the strut body, a bouncy ride or a clunk over bumps can mean this strut is worn, though a worn strut mount or a tire problem can be behind the same signs, so find the cause before you replace it.
Fits
It fits the 2006-2013 Lexus IS250 and the 2011-2013 Lexus IS350, and helps restore their designed control and handling. This listing is one strut for the front left, the spot where each takes one; the front right is a separate part, and the pair on that axle is normally replaced together.
Specifications
Fit and size
- Position: Front left
- Quantity per vehicle: 1 for this side
Build and materials
- Type: High-pressure monotube gas strut
- Gas chamber: Nitrogen with a floating piston
- Piston rod: Triple chrome plated
- Condition: New
Interchange: 4852059305 · 39132 · 39139
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Does this KYB front strut assembly fit the 2011-2013 Lexus IS350?
Yes. KYB 551127 is a front left strut that fits the 2011-2013 Lexus IS350. The right side of that axle takes its own strut.
Is this KYB strut assembly a monotube or a twin-tube design?
Monotube. KYB 551127 has a high-pressure monotube design with two chambers: a hydraulic piston and valve area, and a nitrogen gas area with a floating piston.
How does the piston rod on this KYB suspension strut resist seal wear?
The rod is ultra-smooth and triple chrome plated, which reduces seal wear. Fluid leaking can be a cause of shock failure, and this finish is aimed at that.
What can a worn front left KYB suspension strut assembly look like?
Fluid leaking from the strut body, a bouncy ride or a clunk over bumps can point to wear. A parked, cool vehicle lets you look for a leak; a shop can confirm the rest.
Is number 39132 a cross-reference for this strut?
Yes. 39132 is on the interchange list for KYB 551127, along with 39139 and 4852059305.
