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D2830559 XCMG GR2605 motor grader oil cooler core gasket
Part Number: D2830559 (2830559)
Alternate Name: Oil Cooler Gasket, Oil Cooler Core Seal
Material: High-Temp Oil-Resistant Nitrile Rubber (NBR) with Metal Reinforced Frame (some batches)
Thickness: ~0.5mm
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Product Details:
D2830559 XCMG GR2605 motor grader oil cooler core gasket
D2830559 (2830559) is a genuine Cummins Oil Cooler Core Gasket that seals the oil cooler core to the filter head/cylinder block in ISB/ISDE/QSB 5.9L/6.7L engines. It separates the oil and coolant chambers, prevents oil-coolant mixing and external leaks, ensuring stable oil pressure and temperature. It works with C3975818 Oil Cooler Core, C3947287 Regulator Plunger, C3925009 Spring, and C3929457 O-Ring to form a complete oil filter head sealing and pressure regulation system.
Technical Parameters
Part Number: D2830559 (2830559)
Alternate Name: Oil Cooler Gasket, Oil Cooler Core Seal
Material: High-Temp Oil-Resistant Nitrile Rubber (NBR) with Metal Reinforced Frame (some batches)
Thickness: ~0.5mm
Structure: Molded with alignment holes/lugs to fit the cooler core face
Temperature Range: -40°C~150°C
Pressure Rating: Oil side ≤8bar, Coolant side ≤3bar
Compatible Part: C3975818 Oil Cooler Core
Standards: Cummins OEM, ISO 9001, TS16949
Cross Reference: 2830559 (Universal Part Number)
Application
Applicable Engines: Cummins ISB5.9L, ISB6.7L, ISDE6.7L, QSB5.9/6.7L Common Rail Series.
Equipment:
- Commercial Vehicles: Dongfeng Tianlong, Tianjin, Foton Auman, FAW J6, Dodge Ram 2500/3500
- Construction Machinery: Komatsu PC220-8, Hitachi ZX240, LiuGong CLG926, XCMG XE265, Forklifts, Air Compressors
- Generator Sets: 100–180kW Cummins Diesel Gensets
- Industrial Equipment: Marine Main Engines, Oilfield Machinery, Hydraulic Power Units
Installation Location:
- Between the oil cooler core and oil filter head/cylinder block (side of cylinder block).
Common Faults & Troubleshooting
1. Oil-Coolant Mixing (Critical Failure)
- Causes: Gasket aging, hardening, cracking, misalignment, or improper installation
- Symptoms: Milky emulsified oil, oil in coolant, rising oil level, bubbling radiator, low oil pressure
- Solution: Replace D2830559 Gasket; flush oil/coolant galleries, change oil/filter & coolant; inspect the cooler core for leaks.
2. External Leakage
- Causes: Damaged gasket, uneven bolt torque, distorted housing, dirty sealing surface
- Symptoms: Leaks at filter head/cylinder block, oil stains on the ground, low pressure
- Solution: Replace D2830559 Gasket; clean sealing surfaces, tighten bolts properly; repair distorted housing.
3. Unstable Oil Pressure Due to Seal Failure
- Causes: Insufficient gasket compression, aging loss of elasticity, debris on sealing surface
- Symptoms: Fluctuating oil pressure, low idle pressure, hot engine warning
- Solution: Replace D2830559 Gasket; clean sealing surfaces, assemble correctly; inspect regulator components (C3947287, C3925009).
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1 3955034 Oil Filter Seat
2 3974127 Filter Seat Gasket
3 C3901445 hexagonal flange bolt
4 C3906619 plug
5 C3925009 compression spring
6 C3929457 O-ring seal
7 C3936365 pressure reducing valve
8 C3946947 plug
9 C3947287 oil pressure regulating valve plunger
10 C3975818 oil cooler core
11 D2830559 oil cooler core sealing gasket
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