KYB SM5600 Coil Spring Insulator - Front Lower

KYB SM5600 Coil Spring Insulator for BMW

KYB SM5600 is a coil spring insulator from the Mount Components line, built to replace worn vibration isolators that can create noise and harshness in the suspension. It is a direct-fit OE-style solution for BMW front lower spring locations, including BMW Z3 and select E36 chassis models.

Key Features

• High-quality replacement spring insulator for suspension service
• Helps reduce squeaks, rattles, and vibration noise from aged insulators
• Built to match or exceed original equipment design and quality
• Part number SM5600 for easy identification and ordering
• Compatible with BMW front lower spring applications listed below

Product Details

KYB Mount Components focuses on suspension hardware that restores proper isolation between the coil spring and its mounting point. The SM5600 spring insulator is engineered for BMW applications where hardened or deteriorated insulators can transmit road vibration into the chassis. For drivers servicing a BMW Z3 or E36-based 318i, 318is, 318ti, 323i, 323is, 328i, 328is, 325i, or 325is, this part supports quieter operation and more consistent suspension feel. This part cross-references BMW 31331090479 and 31331134956 for the same application.

What It Helps Address

• Squeaks from worn spring contact points
• Rattles caused by hardened suspension isolators
• Excess vibration noise transferred through the front suspension
• Noise complaints after spring or strut service
• Degraded ride isolation on aging BMW suspension components

Installation Notes

Install SM5600 at the front lower spring position only where the vehicle listing matches. Inspect the spring seat, strut assembly, and surrounding mount components during service, and replace any visibly worn or damaged parts before reassembly. Confirm application details by year, model, and position before installation on BMW Z3 or E36 chassis vehicles.

Quality Assurance

KYB positions its Mount Components line as OE-quality replacement suspension hardware, with design and material standards intended to meet the demands of original-equipment service. The SM5600 is built to restore proper spring isolation and help maintain suspension performance on the specified BMW applications.

Compatible With

• Fits 1996-2002 BMW Z3, Front Lower
• Fits 1992-1999 BMW 318i, Front Lower (E36)
• Fits 1992-1999 BMW 318is, Front Lower (E36)
• Fits 1995-1999 BMW 318ti, Front Lower (E36)
• Fits 1998-1999 BMW 323i, Front Lower (E36)
• Fits 1998-1999 BMW 323is, Front Lower (E36)
• Fits 1996-1999 BMW 328i, Front Lower (E36)
• Fits 1996-1999 BMW 328is, Front Lower (E36)
• Fits 1994-1995 BMW 325i, Front Lower (Exc. M-Technik Susp.; E36)
• Fits 1994-1995 BMW 325is, Front Lower (Exc. M-Technik Susp.; E36)