Stop engine block oil leaks and coolant weeping with our Premium Heavy-Duty Fluid Gallery Sealing Plug 20798864. Forged from high-tensile structural steel with precision-finished threads for VOLVO D6E and D7E engines, EC210B, EC220D, and EC290B excavators, this plug ensures a permanent leak-free seal. Factory-direct B2B wholesale pricing with fast air express international delivery. Contact our engineering support team today with your Machine Model or Serial Number for volume bundle quotes!
The Genuine VOLVO Premium Heavy-Duty Engine Fluid Gallery Sealing Plug Assembly (Part Number: 20798864 / VOE20798864), also known as engine block oil plug, coolant passage plug and gallery end plug, is a necessary high-pressure sealing fitting specially designed for VOLVO D6E, D7E and other heavy-duty common rail diesel engines. It is installed on cylinder block casting holes, oil passages and fuel pipeline reserved ports, playing a key role in blocking and sealing all kinds of fluid channels inside engine block. Working in harsh engine compartment environment, it resists frequent thermal expansion and contraction, strong mechanical vibration and high pressure impact of engine oil, coolant and fuel. Replacing aged corrosion, oil seepage and deformed plugs during engine major repair can effectively stabilize internal fluid pressure, avoid medium mixing pollution, eliminate hidden danger of pipe burst leakage and ensure stable and safe operation of the whole machine.
High Tensile Carbon Steel Material Consistent thermal expansion coefficient with engine block, effectively eliminate leakage gap caused by temperature change.
CNC Precision Sealing Surface Smooth thread and precise sealing surface realize tight interference fit, achieve long-term zero leakage sealing effect.
Anti-rust Passivation Surface Treatment Resist corrosion of antifreeze, engine oil chemical components and humid environment, extend service life greatly.
Thickened Reinforced Structure Optimized wall thickness design, not easy to bulge, crack and thread slipping under instantaneous pressure surge.
| Engineering Parameter | Technical Data & Specification Details |
|---|---|
| Genuine OEM Part No. | 20798864 / VOE20798864 |
| Product Classification | Engine Block Oil & Coolant Channel Sealing Plug Assembly |
| Applicable Engine | VOLVO D6E, D7E, D7D Heavy Duty Diesel Engine |
| Main Material | Cold forged high strength carbon steel alloy |
| Sealing Property | Suitable for high temperature and high pressure fluid pipeline sealing |
| Installation Feature | Standard head design, convenient torque fastening installation |
This genuine sealing plug is widely matched and used in various heavy-duty VOLVO construction machinery equipment:
Crawler Excavators: EC160C, EC210B, EC210E, EC220D, EC240B, EC250D, EC290B, EC300D
Motor Graders & Pavers: G930, G946, G960, G990 Graders, ABG8820B, P8820D Asphalt Pavers
Wheel Loaders: L60F, L90F, L110E Heavy-duty Material Handling Loaders
Special Engineering Machinery: PL3005D Tracked Pipelayers
Fluid passage sealing plug is an easily overlooked but extremely important overhaul accessory. Minor leakage will gradually evolve into major engine failure. Long-term use will cause rust corrosion, thread damage and sealing failure. It is suggested that spare parts dealers and engine maintenance workshops stock sufficient quantity of this model, and sell together with cylinder liner kits, crankshaft bearings, full set gaskets and other overhaul parts to form complete engine block repair matching packages, improving overall supporting service ability.
Oil stain or coolant crystallization deposit appears around engine block plug installation position
Engine oil level or water tank liquid level drops abnormally without obvious external large leakage
Sudden sharp drop of engine oil pressure accompanied by a large amount of fluid leakage, plug blown out by pressure
| Brand | Cross Reference Part Information |
|---|---|
| VOLVO Original Part Number | 20798864 / VOE20798864 |
| General Common Name | Engine Block Sealing Plug, Oil Gallery Plug, Coolant Channel Plug, Casting Hole Plug |
All equipment models are for compatibility reference only. Our high-pressure sealing plugs fully block internal fluid channels and effectively avoid various leakage faults.