Monroe 5955 Shock Absorber - Rear

Monroe OESpectrum Rear Shock Absorber 5955

Monroe OESpectrum 5955 is a rear suspension shock absorber built to restore factory-style drivability and road control on select full-size GM cars. It is engineered to filter out noise, vibration, and harshness while maintaining precise handling response for daily driving.

Key Features

• Rear suspension shock absorber for passenger car applications
• OESpectrum passenger car shock absorber line focused on OE-style ride control
• Compressed length: 13.125 in.; extended length: 21.25 in.; travel length: 8.125 in.
• Metal dust shield included
• Extended bumper stop: yes; compressed bumper stop: no
• Lower mounting code/type: L1/CP3
• Upper mounting type: cross pin mount, closed ended, 5/16 in. hole ID, 2.7/8 in. pin length

Product Details

The Monroe OESpectrum Passenger Car Shock Absorber line is aimed at restoring original factory drivability and performance with controlled damping characteristics. Part number 5955 is a rear shock absorber that uses a cross pin upper mount and L1/CP3 lower mounting configuration, making it a direct-fit style replacement for a range of rear suspension applications. This part cross-references KYB 343130 for the same application.

Compatible With 1977-1992 Oldsmobile Custom Cruiser, rear; 1982-1990 Buick LeSabre, rear; 1982-1996 Chevrolet Caprice, rear; 1982-1986 Pontiac Bonneville, rear; 1982-1985 Chevrolet Impala, rear; 1982-1985 Oldsmobile Delta 88, rear; 1983-1986 Pontiac Parisienne, rear; 1992-1996 Buick Roadmaster, rear; 1992-1996 Cadillac Commercial Chassis, rear; and 1983 Chevrolet Caprice, rear coupe models. Monroe 5955 is also listed with interchange references including Focus Auto Parts 342541 and 342542, plus PRT 173913.

Common Uses

• Rear-end bounce or excessive oscillation over uneven pavement
• Reduced ride control on Buick LeSabre, Buick Roadmaster, and Oldsmobile Custom Cruiser applications
• Noise and harshness from worn rear suspension damping
• Loss of stability during braking, cornering, or highway cruising
• Replacement of a worn rear shock on Chevrolet Caprice, Impala, or Cadillac Commercial Chassis vehicles

Installation Notes

Verify rear mounting style, compressed length, and extended length before installation. This shock uses a cross pin upper mount and L1/CP3 lower mount, so matching the vehicle’s original hardware layout is important for proper fitment. Confirm application notes for Chevrolet Caprice and Impala models, including exclusions for police and taxi packages where listed.

Quality Assurance

Monroe designs the OESpectrum line to return factory-like ride quality while maintaining handling precision and control. The metal dust shield helps protect the shock body from road debris, supporting long-term service in rear suspension use.