SK-I-UB-10-2-3/4X3-3/4
Fits the following:
| Model Num | Application | Cylinder | Serial Num | Bore | Rod | Code |
| 420D | BACKHOE BUCKET | 1668140 | - | 3.75 | 2.75 | I-UB-10 |
| 420D | BACKHOE EXT BUCKET | 1668141 | - | 3.75 | 2.75 | I-UB-10 |
| 420D | BACKHOE BUCKET | 1668140 | BKC1-501; BLN1-4543; BMC1-610; FDP1-7198 | 3.75 | 2.75 | I-UB-10 |
| 430D | BACKHOE BUCKET | 1668140 | BML1-2280; BNK1-2501 | 3.75 | 2.75 | I-UB-10 |
| 430E | BACKHOE BUCKET | 1668140 | DDT1-UP; EAT1-UP; RLN1-UP; SCD1-UP | 3.75 | 2.75 | I-UB-10 |
| 438 | BACKHOE EXT BUCKET | 3KK1-2999 | - | 3.75 | 2.75 | I-UB-10 |
| 438 | BACKHOE EXT STICK | 3KK3000-UP | - | 3.75 | 2.75 | I-UB-10 |
| 438B | BACKHOE EXT BUCKET | 3KK1-2999 | - | 3.75 | 2.75 | I-UB-10 |
| 438B | BACKHOE EXT STICK | 3KK3000-UP | - | 3.75 | 2.75 | I-UB-10 |
Caterpillar, CTC2235944
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