Description
Product Details
| Seal Kit | 3494121 |
| Cylinder Part Number | 3582108, 3687047 75mm |
| Brand | CAT |
| Cylinder Type | Bucket Cylinder |
| Rod Diameter | 70 mm |
| Bore Diameter | 100 mm |
| Product Type | Hydraulic Cylinder Seal Kit |
| Application / Fitment Status | CAT confirms 349-4121 is a hydraulic cylinder seal kit, but marks it DISCONTINUED and advises contacting a dealer for replacement options. Compatible models and the 10 published kit components are listed below. Existing cylinder references and nominal dimensions are not fully reconciled with the component-level data; verify the exact cylinder-group number before claiming fitment. |
| CAT-Compatible Models | Excavators: 314E LCR, 320D L, 320E L, 312E L, 320D2, 315F LCR, 329E L, 329E, 314D LCR, 329D L, 314D CR, 324D L, 314E CR, 314F CR, 324E L, 312E, 320D, 324D, 320D2 L. |
| CAT Official Part Details | 093-1519 backup ring (70 mm ID, qty 1); 095-1713 O-ring (3.1 × 94.4 mm, qty 2); 099-5399 scarf-cut backup ring (qty 3); 143-8025 ring (91.93 mm ID, qty 2); 165-9283 lip seal (70 mm shaft diameter, qty 1); 283-5953 bucket-cylinder seal ring (93.87 mm ID, qty 2); 349-4116 bucket-cylinder buffer seal (69 mm ID, qty 1); 349-4118 hydraulic cylinder U-cup seal (68.6 mm ID, qty 1); 6V-8467 O-ring (3.1 × 99.4 mm, qty 1); 9X-7298 two-piece seal (100 mm bore, qty 1). |
Source: CAT Parts Store — 3494121. CAT advises checking fitment against the exact cylinder-group part number and machine serial number.