Genuine CAT 1S-3311 Internal Snap Ring | Caterpillar 1S3311 OEM NOS Retaining Ring

Secure critical internal shaft assemblies and link pitch mechanisms with this Genuine CAT 1S-3311 Internal Snap Ring (MPN: 1S3311). Built to Caterpillar OEM specifications, this heavy-duty steel retaining ring prevents axial movement and provides reliable component retention under high stress and vibration.

Product Details

• Brand: Caterpillar (CAT)
• Part Number: 1S-3311 / 1S3311
• Condition: Genuine OEM New Old Stock (NOS)
• Type: Internal Snap Ring / Retaining Ring
• Material: Heavy-Duty Alloy Steel
• Free Diameter: ~4.29 in (108.99 mm)
• Approximate Dimensions: 4.0 in × 4.0 in × 0.2 in

Pro-Tips for Machine Compatibility & Installation

Always verify part fitment using your machine's specific serial number prefix before installation. Retaining ring tension and seat depth are critical to preventing premature wear or component dislodgement during operation.

Compatible Equipment Models

• Articulated Trucks: D35C, D35HP, D44B, D550B
• Integrated Toolcarriers: IT12B, IT14B, IT14F, IT18F, IT24F, IT28F, IT28G, IT38F, IT38G
• Landfill Compactors: 836, 836G, 836H, 836K
• Pipelayers & Skidders: 515, 517, 527, 561M, 561N, D4HTSK II, D4HTSK III, D5HTSK II
• Track-Type Tractors / Dozers: D4, D4H, D4H XL, D4H III, D5, D5H, D5H XL, D5M, D5N, D5R, D5R2, D5R XL,    D5R LGP, D6K, D6K2, D6M, D6N, D6T, D6K2 XL, D6T XW, D6T LGP, D6R III, D6T XL, D6K2 LGP, D6K XL, D6T LGPPAT, D6T XL PAT, D6T XW PAT, DEUCE, D6N LGP, D6K LGP, D6N XL, 30/30, 
• Wheel Loaders & Dozers: 824, 824K, 834, 834G, 834H, 834K, 904H, 910E, 910F, 918F, 924F, 928F, 928G, 938F, 938G, 5P 
• Compact Wheel Loader: 904H, 910F, 910E  
• Off-Highway Trucks & Tractors: 768B, 768C, 769, 769B, 769C, 772, 772B, 773, 773B
• Rotary Drill: MD6200, MD6250

Free Shipping to anywhere in the U.S.A. on all orders over $60.00 (excludes Oversize and Freight Items).