051313 – RG-RTNG-EXT 2.240" × .180" YWZC (OEM Ariens / Gravely) Part 051313 (RG-RTNG-EXT 2.240 X .180 YWZC) is a genuine OEM external retaining ring used to secure shafts, pins, or components in place within mower deck assemblies. This retaining ring is commonly installed in gauge wheel, roller, and height adjustment systems, where proper retention is critical for safe and consistent deck operation. Key Features OEM Ariens / Gravely retaining ring for precise fit External snap ring / retaining ring design Helps keep gauge wheels and height adjustment components securely positioned Manufactured with YWZC finish for corrosion resistance and durability Ideal for commercial-duty mower decks Specifications Part Number: 051313 Description: RG-RTNG-EXT Type: External Retaining Ring Diameter: 2.240" Thickness: .180" Finish: YWZC Where Used This retaining ring is used on PM400 series mower decks, including: 72" Deck PM400 60" Deck PM400 72" Deck RD PM400 50" Deck PM400 60" Deck PM400 (Installed in gauge wheels, rollers, and height adjustment assemblies.) Applications Gauge wheel retention Roller assemblies Deck height adjustment mechanisms A worn or missing retaining ring can cause excessive play, misalignment, or component failure, making this OEM replacement essential for proper deck performance.
