Dorman 524-278 Suspension Trailing Arm - Rear Left Lower Forward, Rear Lower Forward or Rear Right Lower Forward

Reliable Suspension Trailing Arm for Ford Expedition and Lincoln Navigator

The Dorman 524-278 suspension trailing arm is engineered to restore proper suspension geometry and improve ride quality for your Ford Expedition or Lincoln Navigator. Constructed from durable steel with a coated finish, this trailing arm offers long-lasting performance and corrosion resistance.

• Made from high-strength steel for durability
• Black coated finish for corrosion protection
• Includes rubber and steel bushings for reliable suspension movement
• Press-in attachment type with black bushings
• Length of 404 mm designed for precise fitment
• Compatible with Ford Expedition and Lincoln Navigator models
• Non-adjustable tubular control arm design

Durable Construction and Design Features

This Dorman suspension trailing arm (part number 524-278) features a tubular steel construction that provides strength while maintaining a manageable weight. The black coated finish helps resist rust and environmental damage, extending the life of the component. Equipped with both rubber and steel bushings, the arm ensures smooth articulation and reduces noise and vibration. The press-in end type allows for secure attachment to the vehicle’s suspension system. This trailing arm is designed specifically for Ford Expedition and Lincoln Navigator models, ensuring proper fit and function.

Applications and Common Suspension Issues Addressed

• Restores proper rear suspension alignment and geometry
• Eliminates clunking or knocking noises from worn trailing arms
• Improves handling and ride stability
• Reduces uneven tire wear caused by suspension play
• Replaces damaged or corroded trailing arms for safer driving

Installation Notes and Tips

Installation of the Dorman 524-278 trailing arm requires basic suspension knowledge and tools. Since mounting hardware is not included, reuse existing bolts or source appropriate fasteners. Ensure the vehicle is securely lifted and supported before beginning work. It is recommended to inspect related suspension components during installation and perform a wheel alignment after replacement to maintain optimal handling.

Quality Assurance and Warranty Information

Dorman suspension components are manufactured to meet or exceed OEM specifications. The 524-278 trailing arm undergoes rigorous quality control to ensure durability and fitment accuracy. While specific warranty details are not provided, Dorman products typically come with a limited warranty against defects in materials and workmanship.