Moog K8158 Steering Idler Arm

MOOG K8158 Steering Idler Arm

The MOOG K8158 steering idler arm is built for classic Ford and Mercury steering systems that need precise support and smoother linkage movement. It features pre-greased construction, a grease fitting for serviceability, and a castle nut included for a more complete replacement on the vehicle.

Key Features

• Pre-greased for initial installation and reduced setup time
• Grease fitting included for routine chassis lubrication
• Castle nut included for secure fastening
• Length: 132.8 mm (5.228 in.)
• Mounting hole diameter: 63.5 mm (2.500 in.)
• MOOG K8158 steering idler arm for steering linkage service

Fitment Details

Fits 1967-1970 Ford Mustang, N/A. Fits 1967-1970 Mercury Cougar, N/A. These applications make the MOOG K8158 a direct-fit steering idler arm choice for classic Mustang and Cougar steering repair work.

MOOG chassis components are known for design updates that focus on longer service life and easier replacement. For buyers searching for a Ford Mustang steering idler arm or a Mercury Cougar steering idler arm, K8158 provides the service features needed for a proper steering linkage rebuild.

This part cross-references Febi-Bilstein 18686 for the same application.

What It Helps Address

• Steering play caused by wear in the idler arm assembly
• Loose or inconsistent steering response in the linkage
• Grease-starved steering components that need serviceable lubrication
• Replacement needs during classic Ford Mustang and Mercury Cougar steering repairs
• Noise or movement from a worn steering support point

Installation Notes

Inspect the steering linkage, mounting points, and adjacent components before installation. Clean the mounting surfaces, verify hole diameter and length against the original part, and torque fasteners to the vehicle manufacturer’s specifications. After installation, lubricate through the grease fitting as part of regular chassis maintenance.

Quality Assurance

MOOG applies ongoing design improvements to its chassis parts to support durability and easier service. The K8158 is pre-greased and includes service features intended to simplify replacement and routine maintenance.