YEARS: 1964, 1965, and 1966 MODELS: Compatible with Ford Mustangs with 6 Cylinders and Manual Steering HIGH-QUALITY: OEM Spec Replacements INCLUDED IN THE 1 PIECE KIT: Idler Arm ALSO CONTAINS: The Cotter Pins This Kit is constructed using High-Quality OEM spec replacements for 1964, 1965, and 1966 Ford Mustangs with 6 Cylinders and Manual Steering. These parts are Factory Design and will only work with Stock Vehicles. This Kit Contains All Of The Pieces Below: Idler Arm.