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Jielin P63 Piston/Piston Pair Order No. U840 Compatible Diesel Fuel Injection Pump Repair Parts
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| Model | P63 (U840) |
| Product Name | Plunger / Barrel and Element |
| Piston Diameter | 6.3 mm (P63 Series Standard Diameter) |
| Applicable Pump Type | P7100 inline pump, PW2000 series, VE distribution pump and other general models |
| Material and Process | High-speed tool steel / alloy steel, surface nitriding/carbonitriding/DLC coating reinforcement |
| Fitting Clearance | 0.002 - 0.004 mm (standard hydraulic fitting tolerance) |
| Working Pressure | ≥ 120 MPa (depending on pump type) |
| Packaging | Single piece / set (including plunger, sleeve, spring, retainer) |
| Brand/Organization | Jielin / Liaoyang / Liaocheng production area, China |
Manufacturer No.
JIELINER P63P63U840
OEM Part No.
U840181 196 714 170S
Engine Part No.
Direct-injection Fuel Pump GeneralDistributed Fuel Pump GeneralGeneral for Domestic Diesel Engine
Interchange No.
P66P530U815PF63
Fitment Vehicles
Diesel Injector Pump RepairConstruction Machinery Diesel EngineAgricultural Transport VehiclePower Generation Unit Power
Fuel System - Industrial Encyclopedia
Supplying Jielin brand P63 piston pair, Wuxi order number U840, compatible with various inline/distributor diesel fuel injection pumps. Includes interchangeable reference numbers P66, P530 (U815), precision machined from high-strength alloy steel, surface hardened treatment, ensuring high-pressure sealing and wear resistance, suitable for construction machinery, agricultural vehicles and fixed power diesel engine maintenance and replacement.