HomeSuspension > Shocks and StrutsMonroe 550066 Shock Absorber - Rear
Part #: 550066

Monroe 550066 Shock Absorber - Rear

Magnum Light Truck Shock Absorber, Rear
30 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Magnum Light Truck Shock Absorber, Rear
Fitment: Ford, F-250 Super Duty and F-350 Super Duty
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Monroe Magnum Light Truck Shock Absorber 550066

The Monroe Magnum Light Truck Shock Absorber 550066 is engineered for Ford F-250 Super Duty and F-350 Super Duty trucks. Designed to provide reliable suspension performance, this shock absorber features a dust shield and extended bumper stop to enhance durability and ride control.

  • Compatible with Ford F-250 Super Duty and F-350 Super Duty models
  • Includes dust shield for protection against debris
  • Extended bumper stop for improved suspension travel control
  • Loop bushing and sleeve lower mount with precise dimensions
  • Reserve tube diameter of 2.251 inches for consistent damping
  • Compressed length of 18.63 inches and extended length of 31.17 inches
  • Travel length of 12.54 inches to accommodate heavy-duty use

Monroe Magnum Light Truck Shock Absorber Product Line

The Magnum Light Truck Shock Absorber line by Monroe is designed specifically for heavy-duty trucks requiring robust suspension components. This product line focuses on delivering durability and consistent performance under demanding conditions, making it suitable for vehicles like the Ford F-250 Super Duty and F-350 Super Duty. The 550066 part number represents a shock absorber built to meet the rigorous needs of light trucks with features such as extended bumper stops and dust shields to protect internal components.

Detailed Product Description

The Monroe 550066 shock absorber is a suspension shock absorber tailored for heavy-duty Ford trucks. It features a dust shield that helps prevent dirt and debris from compromising the shock’s internal mechanisms, extending its service life. The extended bumper stop provides additional cushioning at the end of the shock’s travel, reducing harsh impacts and improving ride quality. The lower mounting uses a loop bushing and sleeve mount with a 9/16 inch sleeve inner diameter and 1.5 inch outer length, while the upper mounting employs a loop bushing mount with a 5/8 inch bushing inner diameter and 1.3125 inch outer length. With a reserve tube diameter of 2.251 inches, this shock absorber maintains consistent hydraulic damping performance. The compressed length measures 18.63 inches, and the extended length is 31.17 inches, allowing for a travel length of 12.54 inches, which supports the suspension needs of heavy-duty trucks.

Common Applications and Problem Solving

  • Reduces excessive bouncing and improves vehicle stability on rough terrain
  • Minimizes suspension wear caused by debris and contaminants with dust shield protection
  • Controls suspension travel to prevent bottoming out with extended bumper stop
  • Enhances handling and load carrying capacity for Ford F-250 and F-350 Super Duty trucks
  • Replaces worn or damaged shocks to restore factory suspension performance

Installation Notes and Tips

  • Verify compatibility with Ford F-250 Super Duty and F-350 Super Duty models before installation
  • Inspect mounting bushings and hardware for wear and replace if necessary
  • Ensure proper alignment of loop bushing mounts during installation to avoid premature wear
  • Use appropriate tools to avoid damage to the dust shield and mounting components
  • Follow vehicle manufacturer torque specifications for mounting bolts

Quality Assurance and Warranty

Monroe manufactures the Magnum Light Truck Shock Absorber 550066 to meet strict quality standards for durability and performance. While specific warranty details are not provided here, Monroe typically offers coverage against defects in materials and workmanship. It is recommended to consult Monroe’s official warranty documentation or authorized dealers for precise warranty terms related to this part.

BrandMonroe
Part Number550066
PositionMagnum Light Truck Shock Absorber, Rear
L1
Compressed Bumper StopNo
Compressed Length18.63
Dust ShieldYes
Extended Bumper StopYes
Extended Hydraulic LockoutNo
Extended Length31.17
Lower Mounting CodeLS78
Lower Mounting TypeLoop Bushing & Sleeve Mount - 9/16" Sleeve ID X 1.1/2" Sleeve OAL
Parts PackNone
Reserve Tube Diameter2.251
Travel Length12.54
Upper Mounting TypeLoop Bushing Mount - 5/8" Bushing ID X 1.5/16" Bushing OAL

This part fits 30 vehicles. Search below:

YearMakeModelBody TypeDrive TypePositionNotes
2026FordF-250 Super Duty4WDRearMagnum Light Truck Shock Absorber
2026FordF-350 Super DutyStandard Cab Pickup4WDRearMagnum Light Truck Shock Absorber
2025FordF-250 Super Duty4WDRearMagnum Light Truck Shock Absorber
2025FordF-350 Super DutyStandard Cab Pickup4WDRearMagnum Light Truck Shock Absorber
2024FordF-250 Super Duty4WDRearMagnum Light Truck Shock Absorber
2024FordF-350 Super DutyStandard Cab Pickup4WDRearMagnum Light Truck Shock Absorber
2023FordF-250 Super Duty4WDRearMagnum Light Truck Shock Absorber
2023FordF-350 Super DutyStandard Cab Pickup4WDRearMagnum Light Truck Shock Absorber
2022FordF-250 Super Duty4WDRearMagnum Light Truck Shock Absorber
2022FordF-350 Super DutyStandard Cab Pickup4WDRearMagnum Light Truck Shock Absorber
2021FordF-250 Super Duty4WDRearMagnum Light Truck Shock Absorber
2021FordF-350 Super DutyStandard Cab Pickup4WDRearMagnum Light Truck Shock Absorber
2021FordF-350 Super DutyExtended Cab Pickup4WDRearMagnum Light Truck Shock Absorber
2021FordF-350 Super DutyCrew Cab Pickup4WDRearMagnum Light Truck Shock Absorber
2020FordF-250 Super Duty4WDRearMagnum Light Truck Shock Absorber
2020FordF-350 Super DutyStandard Cab Pickup4WDRearMagnum Light Truck Shock Absorber
2020FordF-350 Super DutyExtended Cab Pickup4WDRearMagnum Light Truck Shock Absorber
2020FordF-350 Super DutyCrew Cab Pickup4WDRearMagnum Light Truck Shock Absorber
2019FordF-250 Super Duty4WDRearMagnum Light Truck Shock Absorber
2019FordF-350 Super DutyStandard Cab Pickup4WDRearMagnum Light Truck Shock Absorber
2019FordF-350 Super DutyExtended Cab Pickup4WDRearMagnum Light Truck Shock Absorber
2019FordF-350 Super DutyCrew Cab Pickup4WDRearMagnum Light Truck Shock Absorber
2018FordF-250 Super Duty4WDRearMagnum Light Truck Shock Absorber
2018FordF-350 Super DutyStandard Cab Pickup4WDRearMagnum Light Truck Shock Absorber
2018FordF-350 Super DutyExtended Cab Pickup4WDRearMagnum Light Truck Shock Absorber
2018FordF-350 Super DutyCrew Cab Pickup4WDRearMagnum Light Truck Shock Absorber
2017FordF-250 Super Duty4WDRearMagnum Light Truck Shock Absorber
2017FordF-350 Super DutyStandard Cab Pickup4WDRearMagnum Light Truck Shock Absorber
2017FordF-350 Super DutyExtended Cab Pickup4WDRearMagnum Light Truck Shock Absorber
2017FordF-350 Super DutyCrew Cab Pickup4WDRearMagnum Light Truck Shock Absorber

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

347037554388ASH25784ASH25785ASH25786ASH25787ASH25788ASH25790ASH25791ASH25792ASH25793ASH25794HC3Z18125AAHC3Z18125ABHC3Z18125ACHC3Z18125SHC3Z18125THC3Z18125UHC3Z18125VHC3Z18125WHC3Z18125YHC3Z18125ZRS55047A

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.