HomeSuspension > Shocks and StrutsMonroe 66451 Shock Absorber - Rear
Part #: 66451

Monroe 66451 Shock Absorber - Rear

Magnum Shock Absorber, Rear
67 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Magnum Shock Absorber, Rear
Fitment: Ford, Transit-250, Transit-350, and Transit-350 HD
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Monroe Magnum Shock Absorber 66451 Overview

The Monroe Magnum Shock Absorber 66451 is designed specifically for Ford Transit models, including Transit-150, Transit-250, Transit-350, and Transit-350 HD. This suspension shock absorber provides reliable damping performance to maintain vehicle stability and control under various driving conditions.

  • Compatible with Ford Transit-150, Transit-250, Transit-350, and Transit-350 HD
  • Includes dust shield for enhanced durability
  • Compressed length: 15.93 inches; extended length: 25.96 inches
  • Travel length of 10.03 inches for effective suspension movement
  • Upper and lower loop bushing & sleeve mounts for secure installation

Features and Specifications

The Monroe Magnum Shock Absorber 66451 features a dust shield to protect internal components from dirt and debris, extending the service life of the shock. It has a compressed length of 15.93 inches and an extended length of 25.96 inches, with a travel length of 10.03 inches, ensuring proper suspension articulation. The shock uses loop bushing and sleeve mounts on both upper and lower ends, with a 14mm sleeve on the upper mount and a 12mm sleeve on the lower mount, providing a secure and vibration-resistant fit.

About the Monroe Magnum Shock Absorber Line

The Magnum Shock Absorber line by Monroe is engineered to meet the demands of heavy-duty and commercial vehicles. This product line focuses on durability and consistent performance, making it suitable for vehicles like the Ford Transit series that require dependable suspension components for load carrying and frequent use.

Applications and Problem Solving

  • Reduces excessive bouncing and improves ride comfort on Ford Transit-150, Transit-250, Transit-350, and Transit-350 HD
  • Minimizes suspension wear caused by rough road conditions
  • Enhances vehicle stability during cornering and braking
  • Prevents premature tire wear by maintaining proper wheel alignment
  • Protects suspension components from dust and debris with integrated dust shield

Installation Notes and Tips

When installing the Monroe Magnum Shock Absorber 66451, ensure the loop bushing and sleeve mounts align correctly with the vehicle’s mounting points. The upper mount uses a 14mm sleeve with a 79.38mm overall length, while the lower mount uses a 12mm sleeve with a 1.7/8 inch overall length. No compressed or extended bumper stops are included, so verify compatibility with your vehicle’s suspension setup. Proper torque specifications should be followed to avoid mounting damage.

Quality Assurance and Warranty

Monroe manufactures the Magnum Shock Absorber 66451 to meet strict quality standards, ensuring consistent performance and durability. The product includes a dust shield to protect internal components and is backed by Monroe’s warranty coverage, which guarantees the shock absorber against defects in materials and workmanship under normal use.

BrandMonroe
Part Number66451
PositionMagnum Shock Absorber, Rear
Compressed Bumper StopNo
Compressed Length15.93
Dust ShieldYes
Extended Bumper StopNo
Extended Hydraulic LockoutNo
Extended Length25.96
Lower Mounting CodeLS30
Lower Mounting TypeLoop Bushing & Sleeve Mount - 12MM Sleeve ID X 1.7/8" Sleeve OAL
Parts PackNone
Travel Length10.03
Upper Mounting CodeLS46
Upper Mounting TypeLoop Bushing & Sleeve Mount - 14MM sleeve, 79.38MM sleeve OAL

This part fits 67 vehicles. Search below:

YearMakeModelBody TypePositionNotes
2026FordTransit-150RearMagnum Shock Absorber
2026FordTransit-250RearMagnum Shock Absorber
2026FordTransit-350RearMagnum Shock Absorber
2026FordTransit-350 HDRearMagnum Shock Absorber
2025FordTransit-150RearMagnum Shock Absorber
2025FordTransit-250RearMagnum Shock Absorber
2025FordTransit-350RearMagnum Shock Absorber
2025FordTransit-350 HDRearMagnum Shock Absorber
2024FordTransit-150RearMagnum Shock Absorber
2024FordTransit-250RearMagnum Shock Absorber
2024FordTransit-350RearMagnum Shock Absorber
2024FordTransit-350 HDRearMagnum Shock Absorber
2023FordTransit-150RearMagnum Shock Absorber
2023FordTransit-250RearMagnum Shock Absorber
2023FordTransit-350RearMagnum Shock Absorber
2023FordTransit-350 HDRearMagnum Shock Absorber
2022FordTransit-150RearMagnum Shock Absorber
2022FordTransit-250RearMagnum Shock Absorber
2022FordTransit-350RearMagnum Shock Absorber
2022FordTransit-350 HDRearMagnum Shock Absorber
2021FordTransit-150RearMagnum Shock Absorber
2021FordTransit-250RearShocks are 1.38 (in) Bore; Magnum Shock Absorber
2021FordTransit-350Standard Passenger VanRearShocks are 1.38 (in) Bore; Magnum Shock Absorber
2021FordTransit-350Standard Cargo VanRearShocks are 1.38 (in) Bore; Magnum Shock Absorber
2021FordTransit-350Extended Cargo VanRearShocks are 1.38 (in) Bore; Magnum Shock Absorber
2021FordTransit-350Cutaway VanRearwith Single Rear Wheels (SRW); Shocks are 1.38 (in) Bore; Magnum Shock Absorber
2021FordTransit-350Cab & ChassisRearwith Single Rear Wheels (SRW); Shocks are 1.38 (in) Bore; Magnum Shock Absorber
2021FordTransit-350 HDExtended Cargo VanRearShocks are 1.38 (in) Bore; Magnum Shock Absorber
2021FordTransit-350 HDExtended Passenger VanRearShocks are 1.38 (in) Bore; Magnum Shock Absorber
2021FordTransit-350 HDCutaway VanRearwith Single Rear Wheels (SRW); Shocks are 1.38 (in) Bore; Magnum Shock Absorber
2021FordTransit-350 HDCab & ChassisRearwith Single Rear Wheels (SRW); Shocks are 1.38 (in) Bore; Magnum Shock Absorber
2020FordTransit-150RearMagnum Shock Absorber
2020FordTransit-250RearShocks are 1.38 (in) Bore; Magnum Shock Absorber
2020FordTransit-350Standard Passenger VanRearShocks are 1.38 (in) Bore; Magnum Shock Absorber
2020FordTransit-350Standard Cargo VanRearShocks are 1.38 (in) Bore; Magnum Shock Absorber
2020FordTransit-350Extended Cargo VanRearShocks are 1.38 (in) Bore; Magnum Shock Absorber
2020FordTransit-350Cutaway VanRearwith Single Rear Wheels (SRW); Shocks are 1.38 (in) Bore; Magnum Shock Absorber
2020FordTransit-350Cab & ChassisRearwith Single Rear Wheels (SRW); Shocks are 1.38 (in) Bore; Magnum Shock Absorber
2020FordTransit-350 HDExtended Cargo VanRearShocks are 1.38 (in) Bore; Magnum Shock Absorber
2020FordTransit-350 HDExtended Passenger VanRearShocks are 1.38 (in) Bore; Magnum Shock Absorber
2020FordTransit-350 HDCutaway VanRearwith Single Rear Wheels (SRW); Shocks are 1.38 (in) Bore; Magnum Shock Absorber
2020FordTransit-350 HDCab & ChassisRearwith Single Rear Wheels (SRW); Shocks are 1.38 (in) Bore; Magnum Shock Absorber
2019FordTransit-150RearMagnum Shock Absorber
2019FordTransit-250RearShocks are 1.38 (in) Bore; Magnum Shock Absorber
2019FordTransit-350Standard Cargo VanRearwithout Extended Roof; Shocks are 1.38 (in) Bore; Magnum Shock Absorber
2019FordTransit-350Extended Cargo VanRearwithout Extended Roof; Shocks are 1.38 (in) Bore; Magnum Shock Absorber
2019FordTransit-350 HDExtended Cargo VanRearShocks are 1.38 (in) Bore; Magnum Shock Absorber
2018FordTransit-150RearMagnum Shock Absorber
2018FordTransit-250RearShocks are 1.38 (in) Bore; Magnum Shock Absorber
2018FordTransit-350Standard Cargo VanRearwithout Extended Roof; Shocks are 1.38 (in) Bore; Magnum Shock Absorber
2018FordTransit-350Extended Cargo VanRearwithout Extended Roof; Shocks are 1.38 (in) Bore; Magnum Shock Absorber
2018FordTransit-350 HDExtended Cargo VanRearShocks are 1.38 (in) Bore; Magnum Shock Absorber
2017FordTransit-150RearMagnum Shock Absorber
2017FordTransit-250RearShocks are 1.38 (in) Bore; Magnum Shock Absorber
2017FordTransit-350Standard Cargo VanRearwithout Extended Roof; Shocks are 1.38 (in) Bore; Magnum Shock Absorber
2017FordTransit-350Extended Cargo VanRearwithout Extended Roof; Shocks are 1.38 (in) Bore; Magnum Shock Absorber
2017FordTransit-350 HDExtended Cargo VanRearShocks are 1.38 (in) Bore; Magnum Shock Absorber
2016FordTransit-150RearMagnum Shock Absorber
2016FordTransit-250RearShocks are 1.38 (in) Bore; Magnum Shock Absorber
2016FordTransit-350Standard Cargo VanRearwithout Extended Roof; Shocks are 1.38 (in) Bore; Magnum Shock Absorber
2016FordTransit-350Extended Cargo VanRearwithout Extended Roof; Shocks are 1.38 (in) Bore; Magnum Shock Absorber
2016FordTransit-350 HDExtended Cargo VanRearShocks are 1.38 (in) Bore; Magnum Shock Absorber
2015FordTransit-150RearMagnum Shock Absorber
2015FordTransit-250RearShocks are 1.38 (in) Bore; Magnum Shock Absorber
2015FordTransit-350Standard Cargo VanRearwithout Extended Roof; Shocks are 1.38 (in) Bore; Magnum Shock Absorber
2015FordTransit-350Extended Cargo VanRearwithout Extended Roof; Shocks are 1.38 (in) Bore; Magnum Shock Absorber
2015FordTransit-350 HDExtended Cargo VanRearShocks are 1.38 (in) Bore; Magnum 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:

1214043919255576ASH24598ASH24600ASH24690ASH24692ASH24729CK4Z18125HCK4Z18125KCK4Z18125QCK4Z18125SFK4Z18125F

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