KYB 366004 Suspension Strut Cartridge - Front

KYB Excel-G Front Strut Cartridge

KYB Excel-G part number 366004 is a front suspension strut cartridge built to restore original ride control, stability, and steering response. It is a recommended OEM replacement for select GM cars, including Chevrolet Lumina, Chevrolet Monte Carlo, Oldsmobile Cutlass Supreme, Buick Regal, and Pontiac Grand Prix.

The Excel-G line is KYB’s OE replacement series, assembled on KYB production lines with OE-quality components and calibrated to return the vehicle to its designed handling balance rather than change it. This part cross-references Monroe Shocks & Struts (e.g., 73305) for the same application.

Key Features

• KYB recommended OEM replacement shock and strut cartridge
• Nitrogen gas-charged, twin-tube design
• Triple-lip fluid seal helps reduce oil and gas leakage
• Vehicle-specific, hand-assembled damping valves manage tire contact, steering response, and body movement
• Strong strut body and bracket construction helps minimize flex and maintain alignment
• Designed to support electronic safety systems by preserving suspension behavior as engineered
• Front application with compressed length 13.39 in., extended length 20.24 in., and stroke length 12.87 in.
• Upper mount type: 16x1.50

Detailed Description

KYB 366004 is an Excel-G suspension strut cartridge for front suspension service on GM passenger cars that need OE-style ride restoration. It is engineered to bring back the original balance of comfort, control, and handling on applications such as the Chevrolet Lumina, Chevrolet Monte Carlo, Oldsmobile Cutlass Supreme, Buick Regal, and Pontiac Grand Prix. For drivers searching for a front strut cartridge for 1990-2001 Chevrolet Lumina or a front suspension strut cartridge for 1988-1996 Buick Regal, this part matches the intended OE replacement role.

As part of the KYB Excel-G line, 366004 uses OE-quality construction and calibration to help maintain proper tire contact and predictable body motion during braking, lane changes, and everyday driving. KYB also recommends replacing worn strut mounts and protecting the assembly with a strut boot to reduce noise, vibration, and contamination.

What It Helps Address

• Excessive front-end bounce or float
• Reduced steering response and lane-change control
• Nose dive during braking
• Uneven tire contact caused by worn damping
• Noise and vibration from aging suspension components

Installation Notes and Tips

• Compatible With: Fits 1990-2001 Chevrolet Lumina, front
• Compatible With: Fits 1995-1999 Chevrolet Monte Carlo, front
• Compatible With: Fits 1988-1997 Oldsmobile Cutlass Supreme, front
• Compatible With: Fits 1988-1996 Buick Regal, front
• Compatible With: Fits 1988-1996 Pontiac Grand Prix, front; special installation tool required
• See Special Installation Instructions Appendix A for application-specific details
• KYB recommends new strut mounts, part number SM5568, to reduce noise and vibration
• KYB recommends strut boot SB104 to help protect the strut from dirt, debris, and salt

Quality Assurance

KYB is a global OE supplier of shocks and struts, and the Excel-G line is built on the same KYB OE assembly lines using OE-quality components. Part number 366004 is calibrated to restore designed performance for the listed GM front applications.