Front Shock Absorber | 2017-2020 Ford F-250 Super Duty

  • monroe-550066 Rear Shock Absorber - Monroe Magnum

Rear Shock Absorber - Monroe Magnum

Manufacturer: Monroe
Part Number: monroe-550066
Price: $82.09

check_box In Stock check_box Ships Immediately


  • The Quick-Strut line comes with a Lifetime warranty handled through Monroe.
    The Roadmatic line is not covered by a warranty.
    We will provide the warranty form that will then be sent, by the customer, to Monroe and they handle the process from there.
    * All warranty claims are subject to approval by Monroe.
    Please contact us for further information.

    Limited to ONE replacement during guarantee period

question_answer Ask us a Question

FitmentRear Shock Absorber - Monroe Magnum monroe-550066 fits these vehicles:
Details

Front Shock Absorber | 2017-2020 Ford F-250 Super Duty

Specific Fitment Distinctions:

  • Position: Rear.
2020-2026 Ford F-250 Super Duty
  • (4WD, without Tremor Package)
2017-2019 Ford F-350 Super Duty
  • (4WD, Crew Cab Pickup)
  • (4WD, Extended Cab Pickup)
  • (4WD, Standard Cab Pickup)
2020-2026 Ford F-350 Super Duty
  • (4WD, Crew Cab Pickup, without Tremor Package)
  • (4WD, Extended Cab Pickup, without Tremor Package)
  • (4WD, Standard Cab Pickup, without Tremor Package)
2017-2018 Ford F-450 Super Duty
  • (Crew Cab Pickup, Replaces OE Part Number(s) HC3Z18125X, HC3Z18125AD)
2019-2026 Ford F-450 Super Duty
  • (Crew Cab Pickup)
  • (Standard Cab Pickup)
2022-2026 Ford F-550 Super Duty
  • (without Attitude Ride Height Package)
Monroe Magnum Severe Service shocks and struts Monroe Magnum Severe Service shocks and struts

Magnum Severe Service Shocks & Struts

Durable Monroe® Magnum® Severe Service shock absorbers feature enhanced components for superior stability and ride control in the toughest environments.

Durable Monroe® Magnum® Severe Service struts deliver added control and long service life in the toughest environments.

Engineered for the Toughest Environments

Designed for hardworking emergency, municipal, fleet and jobsite vehicles, Monroe Magnum Severe Service shocks have a larger bore for greater working capacity and arc-welded mounts for higher tensile strength.

Strong and Durable

Loop welding techniques include resistance welds and/or arc welds up to 360-degrees for durability while shouldered bushing and bonded bushing (on most applications) delivers quality.

Built to Last

Heavy-duty nitrocarburized rod (on most applications) and sintered iron piston enhance durability for longer service life.

Monroe Magnum Severe Service shock absorber product detail

Control and Durability

Banded piston helps reduce friction between the piston and pressure tube to enhance responsiveness to changing road surfaces for smooth operation.

Consistent Ride

OE all-weather fluid contains special modifiers to handle extreme temperatures and help reduce friction and ensure smooth rod reaction.

Features & Benefits

Severe Service Shocks

Designed for Emergency and Fleet Vehicles

For hardworking first responder, municipal, fleet and jobsite vehicles and features 10-stage valving that adjusts to road extremes to help handle frequent stops, heavy loads and high miles.

Longer Service Life

Larger bore, bigger 2-in. reserve tube and 0.05-in. pressure tube work together to hold more oil for greater capacity to allow the shock to work efficiently for controlled ride and longer service life.

Improves Performance

Nitrogen gas charge maintains tire-to-road contact for improved ride and handling by reducing aeration and shock fade.

Severe Service Struts

Built to Last

Heavy-duty chrome rod and PTFE-banded piston enhance durability for longer service life while PTFE-coated bearing reduces friction between rod and guide.

Control and Durability

PTFE-banded piston helps reduce friction between the piston and pressure tube to enhance responsiveness to changing road surfaces.

Consistent Ride

OE all-weather fluid contains special modifiers to handle extreme temperatures and help reduce friction and ensure smooth rod reaction.

Fitment for monroe-550066
YearsMakeModelPositionBody TypeDrive WheelNotes
2017 - 2019FordF-250 Super DutyRear4WD
2020 - 2026FordF-250 Super DutyRear4WDwithout Tremor Package
2017 - 2019FordF-350 Super DutyRearCrew Cab Pickup, Extended Cab Pickup, Standard Cab Pickup4WD
2020 - 2026FordF-350 Super DutyRearCrew Cab Pickup, Extended Cab Pickup, Standard Cab Pickup4WDwithout Tremor Package
2017 - 2018FordF-450 Super DutyRearCrew Cab PickupReplaces OE Part Number(s) HC3Z18125X, HC3Z18125AD
2019 - 2026FordF-450 Super DutyRearCrew Cab Pickup, Standard Cab Pickup
2022 - 2026FordF-550 Super DutyRearwithout Attitude Ride Height Package
Overview
GradePremium
Active or Passive SuspensionPassive
Dimensions
Extended Length791.7mm (31.17 in)
Compressed Length473.2mm (18.63 in)
Travel Length318.5mm (12.54 in)
Body Diameter57.2mm (2.251 in)
Features
Gas ChargedYes
Adjustable Ride HeightNo
Adjustable CompressionNo
Adjustable ReboundNo
Materials, color & finish
ColorBlack
Cylinder FinishPainted
What's included
Dust Shield IncludedYes
Includes Bump StopNo
Mounting Hardware IncludedNo
OEM part numbers Monroe 550066 replaces

Monroe 550066 is an aftermarket replacement part. It replaces the original equipment part numbers listed below for the vehicles this part fits. It is not a genuine manufacturer part, and the numbers below are shown for identification only.

Vehicle manufacturerOEM part number replaced
FordHC3Z18125AA
FordHC3Z18125AB
FordHC3Z18125AC
FordHC3Z18125AD
FordHC3Z18125S
FordHC3Z18125T
FordHC3Z18125U
FordHC3Z18125V
FordHC3Z18125W
FordHC3Z18125X
FordHC3Z18125Y
FordHC3Z18125Z
FordLC3Z18125J
FordLC3Z18125W
FordPC3C18080EAC
FordPC3C18080EBC
FordPC3C18080ECC
FordPC3C18080EDC
FordPC3C18080NHA
FordPC3C18080NLA
FordPC3C18080PFA
FordPC3C18080PGA
FordPC3C18080RAA
FordPC3C18080RBA
FordPC3C18080RCA
FordPC3C18080RDA
FordPC3C18080SEA
FordPC3C18080TAA
FordPC3C18080TBA
FordPC3C18080TCA
FordPC3C18080TDA
FordPC3C18080TEA
FordPC3C18080TFA
FordPC3Z18125AA
FordPC3Z18125BA
FordPC3Z18125CA
FordPC3Z18125DA
FordPC3Z18125E
FordPC3Z18125EA
FordPC3Z18125FA
FordPC3Z18125J
FordPC3Z18125K
FordPC3Z18125L
FordPC3Z18125M
FordPC3Z18125R
FordPC3Z18125S
FordPC3Z18125T
FordPC3Z18125U
FordPC3Z18125V
FordPC3Z18125W
FordPC3Z18125X
FordPC3Z18125Y

It also replaces these original equipment service part numbers.

Service brandService part number replaced
MotorcraftASH25784
MotorcraftASH25785
MotorcraftASH25786
MotorcraftASH25787
MotorcraftASH25788
MotorcraftASH25790
MotorcraftASH25791
MotorcraftASH25792
MotorcraftASH25793
MotorcraftASH25794