015733 – Gravely Internal Retaining Ring RG-RTNG-INT Genuine OEM Part The 015733 is a genuine OEM internal retaining ring, designed to securely locate and retain shafts and internal components in Gravely tractors, walk-behind units, and differential assemblies. Commonly identified as RG-RTNG-INT, this snap ring is critical for maintaining correct shaft positioning in PTO clutch shafts (Number Nine Shaft) and Swiftamatic differential systems. Manufactured to OEM specifications, this retaining ring is produced from hardened spring steel, providing reliable tension, resistance to deformation, and long service life under load, vibration, and rotational stress. Key Details: Manufacturer Part Number: 015733 Brand: Gravely Part Type: Internal Retaining Ring (Snap Ring) Alternate Description: RG-RTNG-INT Size: .697″ × .93″ Material: Hardened spring steel Function: Retains shafts and internal components OEM Status: Genuine OEM replacement part Installation: Internal snap-ring fit Gravely Tractor PTO Systems8000-Series tractors including 8122, 8123, 8162B, 8163B, 8173KT, 8179KT, 8199KTG-Series and hydraulic-lift equipped tractorsUsed on Number Nine Shaft – PTO Clutch Swiftamatic Differential Models2-Wheel tractors (5200, 5240, 5260, 5465, 5645, 5665)Manual start and electric start versionsWith or without steering brake2-speed and 4-speed Swiftamatic differentials PM / Commercial UnitsPM50 models (16 HP, 4-speed)Various commercial walk-behind and tractor platforms using Swiftamatic drivetrains Compatibility includes a wide range of Gravely tractors and walk-behind units across multiple production years. Always verify correct fitment using the machine’s illustrated parts diagram and model/serial number range before installation. If you want, I can format future Gravely retaining rings and snap rings using this same compact structure so all drivetrain hardware listings stay consistent on the website.
