Smooth out a worn rear ride and help keep your tires planted with the Monroe OESpectrum Suspension Shock Absorber 5931, a rear-position damper designed to restore factory ride control on classic GM compacts. It fits the 1968 Chevrolet Chevy II, 1969-1979 Chevrolet Nova, 1971-1977 Pontiac Ventura, 1973-1975 Buick Apollo, 1973-1979 Oldsmobile Omega, 1975-1979 Buick Skylark, and 1977-1979 Pontiac Phoenix. See the Buyer's Guide tab for engine-level details.
- Twin Technology Active Control System: tuned to deliver control across most driving conditions while isolating impact-related noise, vibration, and harshness.
- Full displaced valving: tuned to the vehicle, with a larger bore for more efficient damping and a consistent, smooth ride.
- PTFE-banded piston: provides consistent sealing between the piston and pressure tube for better control and added durability.
- Nitrogen gas-charge: helps maintain tire-to-road contact by reducing aeration and shock fade, while OE all-weather fluid resists breakdown in temperature extremes.
A self-lubricating fluid seal retains gas and reduces friction against the piston rod to help limit premature wear. Backed by Monroe's Limited Lifetime Warranty and Feel the Difference Guarantee. Shocks are best replaced as a matched axle pair for balanced damping.
Interchange: TS3432552B · 343132 · KG5506 · SH82093 · 12140684
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What position does this shock absorber fit?
The Monroe OESpectrum 5931 is a rear suspension shock absorber for the listed GM applications.
Which vehicles does the 5931 fit?
It fits the 1968 Chevrolet Chevy II, 1969-1979 Chevrolet Nova, 1971-1977 Pontiac Ventura, 1973-1975 Buick Apollo, 1973-1979 Oldsmobile Omega, 1975-1979 Buick Skylark, and 1977-1979 Pontiac Phoenix.
Should I replace both rear shocks together?
Shocks are sold individually. Replacing both sides on the axle as a matched pair is recommended for balanced, consistent damping.
What does the nitrogen gas-charge do?
It helps maintain tire-to-road contact by reducing aeration and shock fade, supporting improved ride and handling.
What are signs a rear shock may need replacing?
Common signs include excessive bouncing over bumps, a rougher ride, or fluid leaking from the shock body. Have the cause diagnosed before replacing.
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