Dorman 541-158 Steering Idler Arm and Bracket Assembly - Right

Dorman 541-158 Steering Idler Arm Assembly

Dorman 541-158 is a steering idler arm and bracket assembly for specific Ford Mustang and Mercury Cougar applications with power steering. It is built to match original fit, function, and performance so the steering linkage can operate as intended.

Key Features

• Direct replacement steering idler arm and bracket assembly
• Steel construction with a coated black finish
• Pre-greased design with grease fittings included
• L-shaped bracket design with two bracket holes
• Standard replacement grade for OE-style service
• Arm stud thread diameter: 10 mm; bracket stud thread diameter: 12 mm
• Mounting hole diameter: 10.4 mm

Detailed Description

This Dorman steering idler arm assembly is engineered for the right side on 1967-1970 Ford Mustang and 1968-1970 Mercury Cougar models with power steering. The steel body, coated finish, and pre-greased construction support dependable steering linkage operation while matching the original assembly’s fit and function. If you are replacing a worn steering idler arm on a classic Mustang or Cougar, part number 541-158 provides an OE-style solution for the correct application.

This part cross-references MOOG Chassis Products (e.g., K8158, K8161) for the same application.

What It Helps Fix

• Excessive steering play or looseness
• Uneven or delayed steering response
• Clunking or movement in the steering linkage
• Wear-related instability on the right side steering support
• Service issues caused by a damaged or worn idler arm assembly

Installation Notes and Tips

Verify vehicle year, make, model, and right-side power steering configuration before installation. Inspect related steering linkage components, fasteners, and mounting points for wear or damage, and replace any compromised parts during service. Confirm thread sizes and mounting dimensions match the original hardware before final assembly.

Quality Assurance

Dorman designs this steering idler arm and bracket assembly to match original equipment fit, function, and performance for the listed applications. Part number 541-158 is a standard replacement component for service on the specified Ford Mustang and Mercury Cougar models.