C0170-55140 Main Control Valve Seal Kit supports hydraulic valve resealing for B2B excavator parts repair, overhaul, stocking, and wholesale sourcing.
The C0170-55140 Main Control Valve Seal Kit YNF19104, also referenced as KBJ23361, is supplied for the repair and resealing of compatible excavator hydraulic control valve assemblies. Seal components within a main control valve are used to maintain hydraulic oil separation and sealing around corresponding valve sections, passages, plugs, and mating areas.
After extended machine operation, sealing elements may become hardened, flattened, worn, cut, or damaged by heat and hydraulic oil contamination. External leakage or leakage discovered during valve disassembly can make resealing necessary.
For B2B buyers, the C0170-55140 Main Control Valve Seal Kit should be matched using both reference numbers, control valve identification, machine information, existing seal arrangement, and product photos. Because seal-kit contents can vary between valve configurations, the removed seals and valve reference should be compared before bulk purchasing. Accurate matching helps reduce incomplete repairs, incorrect stock, workshop delays, and repeat international freight.
| Parameter | Specification |
|---|---|
| YNF Part Number | YNF19104 |
| Primary Part Number | C0170-55140 |
| Alternative Part Number | KBJ23361 |
| Product Name | Main Control Valve Seal Kit |
| Alternative Name | Hydraulic Valve Seal Kit / Control Valve Repair Kit / Distribution Valve Seal Kit |
| Product Type | Hydraulic Valve Resealing Kit |
| Parts Category | Excavator Hydraulic Repair Parts |
| Main Function | Replaces Sealing Components During Main Control Valve Repair |
| Application | Excavator Main Hydraulic Control Valve |
| Installation | Corresponding Sealing Positions Inside and Around the Control Valve Assembly |
| Working Medium | Hydraulic Oil |
| Service Type | Control Valve Resealing / Hydraulic Valve Overhaul |
| Fitment Check | C0170-55140 / KBJ23361 / Valve Reference / Machine Information / Existing Seal Layout / Product Photos |
| Quality Type | Aftermarket Replacement |
| Condition | New |
| Brand | YNF |
| Origin | China |
| MOQ | 1 Set |
| Shipping Method | Air, Sea, Express |
| Payment Terms | T/T, PayPal, Western Union |
| Application | Description |
|---|---|
| Main Control Valve Repair | Used during compatible hydraulic valve resealing |
| Hydraulic Leakage Service | Suitable when deteriorated seals are identified during repair |
| Valve Overhaul | Sealing components can be renewed during control valve rebuilding |
| Preventive Reconditioning | Useful when an older valve is disassembled for comprehensive service |
| Hydraulic Workshop | Practical for professional excavator valve repair businesses |
| Excavator Maintenance | Suitable for hydraulic-system restoration projects |
| Repair Parts Inventory | Compact kit for commonly planned valve repair work |
| B2B Wholesale Stock | Suitable for hydraulic parts dealers, distributors, and importers |
Q: What is the kit used for?
A: It is used to replace sealing components during compatible hydraulic control valve repair and overhaul.
Q: Does the product include the complete control valve?
A: No. This product is a seal repair kit rather than a complete hydraulic valve assembly.
Q: Why should both reference numbers be checked?
A: Cross-checking C0170-55140 and KBJ23361 helps improve replacement identification.
YNF Machinery supplies C0170-55140 / KBJ23361 main control valve seal kits for excavator hydraulic workshops, machinery repair companies, dealers, wholesalers, fleet operators, and international importers.
For professional repair businesses, replacing a complete control valve is not always necessary when the valve body and internal precision components remain serviceable. A correctly matched YNF19104 hydraulic valve seal kit can support economical resealing during control valve overhaul.
Buyers can provide the C0170-55140 or KBJ23361 reference, machine model, control valve number, required quantity, valve nameplate photos, removed-seal photos, and images of the complete valve assembly for matching.
Main control valves, pilot valves, relief valves, solenoid valves, hydraulic pump seal kits, swing motor seal kits, travel motor seal kits, O-ring kits, and other hydraulic repair parts can also be consolidated into the same order to simplify B2B procurement and reduce fragmented shipping costs.
In the excavator, there are many different plugs used to connect the sensors, switch, etc.
