Moog K8158 Steering Idler Arm

Reliable Steering Idler Arm for Ford Mustang and Mercury Cougar

The Moog K8158 steering idler arm is engineered to provide precise steering control and durability for Ford Mustang and Mercury Cougar models. Designed with pre-greased components and essential hardware included, this idler arm ensures a straightforward installation and long-lasting performance.

• Pre-greased for immediate use and reduced maintenance
• Includes castle nut and grease fitting for secure mounting and easy lubrication
• Mounting hole diameter of 2.5 inches (63.5 mm) for exact fitment
• Length measurements of 132.8 mm (5.228 inches) for proper alignment

Durable Construction and Precise Fitment

The Moog K8158 steering idler arm is manufactured to meet OEM specifications, ensuring compatibility with select Ford Mustang and Mercury Cougar vehicles. Its robust design includes a pre-greased pivot point to minimize wear and extend service life. The included castle nut and grease fitting facilitate secure installation and ongoing maintenance, helping maintain optimal steering response. With mounting hole diameters precisely measured at 2.5 inches (63.5 mm), this idler arm fits securely to the vehicle’s steering system, supporting consistent handling and control.

Compatible Vehicles and Applications

This steering idler arm is compatible with the following vehicles:

• Ford Mustang (various model years)
• Mercury Cougar (various model years)

It is designed to replace worn or damaged idler arms that can cause steering play, uneven tire wear, or alignment issues.

Common Issues Addressed by the Moog K8158 Idler Arm

• Excessive steering play or looseness
• Uneven or rapid tire wear
• Steering wheel vibration or shimmy
• Difficulty maintaining proper wheel alignment
• Noise or clunking sounds from the steering linkage

Installation Notes and Tips

Installation of the Moog K8158 idler arm requires basic steering system knowledge and tools. The pre-greased design reduces initial lubrication needs, but periodic greasing through the included grease fitting is recommended for optimal performance. Ensure the castle nut is properly torqued and secured with the provided hardware. Verify alignment after installation to maintain proper steering geometry.

Quality Assurance and Warranty

Moog parts are engineered to meet or exceed OEM standards, providing reliable performance and durability. The K8158 steering idler arm comes with a limited warranty against defects in materials and workmanship, supporting confidence in its quality and fitment for Ford Mustang and Mercury Cougar vehicles.