Monroe
OESpectrum Passenger Car Shock Absorber

Monroe 5809 Shock Absorber - Front

Brand Monroe 5809
Position Front
S4
Compressed Bumper Stop No
Compressed Length 9
Dust Shield No
Extended Bumper Stop Yes
Extended Hydraulic Lockout No
Extended Length 13.625
Lower Mounting Code SP
Lower Mounting Type Stud Plate Mount
Parts Pack P00423,P01136
Travel Length 4.625
Upper Mounting Type Stem Mount - 2.3/8" Stem Length X 3/8"-16 Thread Pitch
Product line OESpectrum Passenger Car Shock Absorber
Fits American Motors, Ford, Lincoln, and Mercury · 14 vehicles

Factory drivability restored. Returns original ride feel with precise handling and control.

Noise and vibration filtered. Helps reduce harshness for a smoother, quieter ride.

OESpectrum design. Monroe engineering for passenger car shock absorber performance.

Cross-references Focus Auto Parts 343339, KYB 343156 and 343133 for the same application. See all 5.

$49.39Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Shock Absorbers are typically replaced in pairs, axle by axle.
Order total $49.39
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Monroe OESpectrum Front Shock Absorber

Monroe OESpectrum shock absorber 5809 is built for passenger cars that need factory-style drivability with more controlled handling response. It filters road noise, vibration, and harshness while restoring consistent front suspension performance on select Lincoln, Mercury, and Mercury applications.

Key Features

  • Monroe OESpectrum Passenger Car Shock Absorber line for OE-style ride control
  • Front shock absorber for stock-component suspension setups
  • Compressed length: 9 in.; extended length: 13.625 in.; travel length: 4.625 in.
  • Upper mount: stem mount with 2.3/8 in. stem length x 3/8 in.-16 thread pitch
  • Lower mount: stud plate mount
  • Extended bumper stop included; dust shield not included
  • Cross-reference: KYB 343156

Product Details

The Monroe 5809 is part of the OESpectrum Passenger Car Shock Absorber line, which focuses on restoring original factory drivability and performance without sacrificing steering precision or ride comfort. Its valving is tuned to control body motion and reduce harshness, making it a practical choice for older front suspension applications such as 1977-1980 Lincoln Versailles, 1975-1980 Mercury Monarch, and 1968-1971 Mercury Montego front shock replacement needs. This Monroe shock absorber 5809 is also cross-referenced to Focus Auto Parts 343339 and KYB 343156 for the same application.

Vehicle Fitment

  • Fits 1977-1980 Lincoln Versailles, front
  • Fits 1975-1980 Mercury Monarch, front
  • Fits 1968-1971 Mercury Montego, front

Common Issues This Part Addresses

  • Excessive front-end bounce after bumps
  • Loose or unsettled steering feel on worn shocks
  • Harsh ride and increased cabin vibration
  • Reduced control during braking and cornering
  • Uneven suspension response from aging OE dampers

Installation Notes

Verify mount style, compressed length, and extended length before installation. This unit uses a stem upper mount and stud plate lower mount, so it should be matched to the vehicle’s original front shock configuration. Confirm that the application uses stock suspension components and compare the existing shock dimensions to Monroe 5809 before final assembly.

Quality Assurance

Monroe positions the OESpectrum line as an OE-style replacement focused on factory drivability, handling precision, and reduced noise, vibration, and harshness. Part number 5809 is built to support consistent front suspension control on the listed Lincoln and Mercury applications.

This part fits 14 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
1980LincolnVersaillesFrontEnhances performance for vehicles with stock components.; OESpectrum Passenger Car Shock Absorber
1980MercuryMonarchFrontEnhances performance for vehicles with stock components.; OESpectrum Passenger Car Shock Absorber
1979LincolnVersaillesFrontEnhances performance for vehicles with stock components.; OESpectrum Passenger Car Shock Absorber
1979MercuryMonarchFrontEnhances performance for vehicles with stock components.; OESpectrum Passenger Car Shock Absorber
1978LincolnVersaillesFrontEnhances performance for vehicles with stock components.; OESpectrum Passenger Car Shock Absorber
1978MercuryMonarchFrontEnhances performance for vehicles with stock components.; OESpectrum Passenger Car Shock Absorber
1977LincolnVersaillesFrontEnhances performance for vehicles with stock components.; OESpectrum Passenger Car Shock Absorber
1977MercuryMonarchFrontEnhances performance for vehicles with stock components.; OESpectrum Passenger Car Shock Absorber
1976MercuryMonarchFrontEnhances performance for vehicles with stock components.; OESpectrum Passenger Car Shock Absorber
1975MercuryMonarchFrontEnhances performance for vehicles with stock components.; OESpectrum Passenger Car Shock Absorber
1971MercuryMontegoFrontEnhances performance for vehicles with stock components.; OESpectrum Passenger Car Shock Absorber
1970MercuryMontegoFrontEnhances performance for vehicles with stock components.; OESpectrum Passenger Car Shock Absorber
1969MercuryMontegoFrontEnhances performance for vehicles with stock components.; OESpectrum Passenger Car Shock Absorber
1968MercuryMontegoFrontEnhances performance for vehicles with stock components.; OESpectrum Passenger Car Shock Absorber
Directly replaces or cross-references 5 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Focus Auto Parts — 343339KYB — 343156343133TS3233922BTS3432552B