Description
Product Details
| Seal Kit | 3404688 |
| Brand | CAT |
| Bore Diameter | 85 mm (existing listing; verify with cylinder group) |
| Product Type | Hydraulic Cylinder Seal Kit |
| Application / Fitment Status | CAT official catalog identifies this part differently from the current product title. Treat as an identity conflict; confirm the exact item and cylinder group before using any fitment or dimensions. |
| CAT Official Catalog Identity | CAT's official catalog lists part 340-4688 as a general-use O-ring seal kit, not specifically a hydraulic cylinder reseal kit. CAT lists compatible model 424B backhoe loader. The current product title and SKU imply a cylinder seal kit, so this is a catalog identity mismatch requiring separate product review. |
| CAT Official Part Details | Official CAT category: General Use O-Ring Seal Kit. Published CAT page does not establish an 85 mm cylinder bore specification for this kit. Existing bore value remains unverified and should not be used for fitment until the correct cylinder-group reference is confirmed. |
| CAT-Compatible Models | Backhoe loader: 424B |
Source: CAT Parts Store — 3404688. Confirm fitment against the exact machine serial number and cylinder-group part number.

