Firm up your BMW 3 Series with the KYB shock absorber 553239, a Gas-a-just high-pressure monotube unit for the rear position on the listed applications. Its components and valving are designed specifically for the BMW 3 Series, giving you controlled damping to replace a worn or leaking factory rear shock.
The Gas-a-just is a KYB gas shock absorber that uses a monotube layout with two separate working chambers: an air-free hydraulic piston-and-valve area for responsiveness, plus a high-pressure nitrogen gas section with a floating piston. Separating the gas and oil is designed for fade-free operation and instant response.
- High-pressure monotube design: keeps gas and oil apart to resist aeration fade.
- Triple chrome plated piston rod: ultra-smooth surface intended to reduce seal wear, since fluid leaking can cause shock failure.
- Added damping: adds up to 25% more damping performance over original equipment shocks.
- Recommended companions: KYB strut mounts SM5530 and KYB Strut Boot SB107 to help reduce noise and protect the unit.
Fits the rear of the 1992-1998 BMW 318I and 318IS, 1993-1995 320I, 2000 323CI and 328CI, 1998-2000 323I, 1998-1999 323IS, 2001-2006 325CI and 330CI, 2001-2005 325I and 330I, 1992-1995 325I, 325IS, 1996-2000 328I and 1996-1999 328IS. See the Buyer's Guide tab for the full list and engine specifics. Sold individually; replacing both rear shocks as a matched pair is recommended for balanced ride control.
Interchange: 33521095913 · 33521096366 · 33526750783 · 69863 · 39033
This part cross-references / interchanges with the following part numbers:
33521095913, 33521096366, 33526750783, 69863, 39033
