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12 Aug 2025
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Replacement Part for 707-99-58050 Boom Cylinder Seal Kit Fits Komatsu Pc240Lc-7K Pc270Lc-7L R2Aft305732 
 
 
RAParts 707-99-58050 New Komatsu Excavator Seal Kit PC290LC-7K PC290NLC-7K PC270LC-7L + 
 
 Komatsu machinery list:
| _ | Book/Page | 
|---|---|
| 
PC240LC-7K S/N K40001-UP  | |
| BOOM LIFT CYLINDER (FOR 2-PIECE BOOM) | |
| 
PC240LC-8K S/N K50001-UP  | |
| BOOM LIFT CYLINDER (FOR 2-PIECE BOOM) | |
| 
PC240NLC-7K S/N K40001-UP  | |
| BOOM LIFT CYLINDER (FOR 2-PIECE BOOM) | |
| 
PC240NLC-8K S/N K50001-UP  | |
| BOOM LIFT CYLINDER (FOR 2-PIECE BOOM) | |
| 
PC270-7 S/N 10001-UP (Overseas Version)  | |
| BOOM CYLINDER (100 HOURS LUBRICATING) | |
| BOOM CYLINDER (500 HOURS LUBRICATING) | |
| BOOM CYLINDER (FOR BURST VALVE)(#10501-) | |
| 
PC270-7-AG S/N 10001-UP  | |
| BOOM CYLINDER | |
| 
PC270LC-7L S/N A86001-UP  | |
| BOOM CYLINDER (LARGE DIAMETER TYPE) | |
| 
PC270LL-7L S/N A86001-UP  | |
| BOOM CYLINDER (LARGE DIAMETER TYPE) | |
| 
PC290LC-7K S/N K40001-UP  | |
| BOOM CYLINDER | |
| BOOM LIFT CYLINDER (FOR 2-PIECE BOOM) | |
| 
PC290NLC-7K S/N K40001-UP  | |
| BOOM CYLINDER | |
| BOOM LIFT CYLINDER (FOR 2-PIECE BOOM) | |
| 
PC308USLC-3 S/N 20001-UP  | |
| BOOM CYLINDER(#20001-) | |
 
  
 
 
 
 
  
  
  
  
  
  
  
  
  
  
 