Dorman 541-117 Steering Idler Arm and Bracket Assembly

Dorman 541-117 Steering Idler Arm Assembly

Dorman 541-117 is a steering idler arm and bracket assembly built to match the original fit, function, and performance on select full-size GM vehicles. It is a steel, coated replacement with a black finish, pre-greased design, and grease fitting for serviceability.

Key Features

• Steel construction with a coated black finish
• Pre-greased design for initial service readiness
• Grease fitting included for future maintenance
• L-shaped bracket design with 2 bracket holes
• Standard replacement grade for steering linkage service
• Arm stud and bracket stud thread diameter: 12 mm
• Mounting hole diameter: 11.5 mm

Detailed Description

This steering idler arm and bracket assembly is engineered for direct replacement on select 1977-1978 Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac applications. It is designed to restore proper steering linkage geometry and support consistent steering response on vehicles such as the 1977 Chevrolet Caprice, 1977 Cadillac Fleetwood, and 1978 Pontiac Bonneville. Dorman 541-117 is also referenced by part numbers 620.66034, 7826854, K6164, GK6164, and MK6164 for the same application.

Built from steel with a coated surface, this assembly includes a grease fitting and mounting hardware, and it uses a bracket-style arm attachment. The package contents listed for this part include an idler arm, a zerk fitting, and a cotter pin. For buyers searching for a 1977-1978 Oldsmobile Delta 88 idler arm assembly or a 1978 Cadillac DeVille steering idler arm replacement, this part number provides a direct-fit service option.

What It Helps Address

• Loose or vague steering feel
• Excess play in the steering linkage
• Uneven steering response during lane changes
• Wear-related steering support issues at the idler arm
• Replacement needs on worn steering gear and related components

Installation Notes and Tips

Verify vehicle fitment by year, make, model, and mounting bolt configuration before installation. This part is listed for select vehicles with 7/16 in. mounting bolts on certain 1978 applications, including the 1978 Cadillac DeVille, 1978 Cadillac Fleetwood, 1978 Oldsmobile 98, 1978 Oldsmobile Custom Cruiser, 1978 Oldsmobile Delta 88, 1978 Pontiac Bonneville, and 1978 Pontiac Catalina. Proper alignment inspection is recommended after steering component replacement.

• Fits 1978 Cadillac DeVille, N/A, w/ 7/16 In. Mounting Bolts
• Fits 1978 Cadillac Fleetwood, N/A, w/ 7/16 In. Mounting Bolts
• Fits 1977-1978 Oldsmobile 98, N/A, w/ 7/16 In. Mounting Bolts
• Fits 1977-1978 Oldsmobile Custom Cruiser, N/A, w/ 7/16 In. Mounting Bolts
• Fits 1977-1978 Oldsmobile Delta 88, N/A, w/ 7/16 In. Mounting Bolts
• Fits 1978 Pontiac Bonneville, N/A, w/ 7/16 In. Mounting Bolts
• Fits 1978 Pontiac Catalina, N/A, w/ 7/16 In. Mounting Bolts
• Fits 1977 Buick LeSabre, N/A
• Fits 1977 Buick Riviera, N/A
• Fits 1977 Cadillac DeVille, N/A
• Fits 1977 Cadillac Fleetwood, N/A
• Fits 1977 Chevrolet Caprice, N/A
• Fits 1977 Chevrolet Impala, N/A
• Fits 1977 Pontiac Bonneville, N/A
• Fits 1977 Pontiac Catalina, N/A

Quality Assurance

Dorman designs this steering idler arm and bracket assembly to match original equipment fit, function, and performance for the listed applications. That OE-style approach supports accurate replacement selection for steering service on classic Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac models.