Protect your engine cooling loop and maintain boiling point stabilization with our Premium 1674083 (20879323) Expansion Tank Pressure Caps for VOLVO EC210B, EC240B, and EC360B excavators. Get direct factory pricing, bulk B2B discounts, and fast global air express shipping from China's leading mechanical parts networks supplier today!
A defective pressure cap causes premature pressure release, coolant boiling, pipeline vacuum collapse, and pump cavitation, leading to serious engine overheating. This dual-valve precision cap maintains stable closed-loop pressure for the VOLVO excavator cooling system, ensuring high-efficiency thermal regulation under severe conditions.
Dual Precision Valve Structure: Automatic overpressure discharge and vacuum balance keep the cooling loop pressure strictly within a safe operational range.
Reinforced Polymer Housing: Designed to resist high-temperature steam erosion, avoiding cracking and thread degradation under long-frequency mechanical vibration.
High Elastic Silicone Seal: Provides excellent tolerance to long-life heavy-duty coolants, maintaining stable sealing geometry over extended service intervals.
Standard Thread Specification: Ensures a firm locking installation that prevents micro-pressure leakage along the thread gap.
| Technical Parameter | Specification Details |
|---|---|
| Main Part Number | 1674083 / VOE1674083 |
| Interchange Part | 20879323 / VOE20879323 |
| Product Type | Cooling System Expansion Tank Pressure Regulating Safety Cap |
| Applicable Medium | Pressurized glycol coolant, steam, cooling liquid mist |
| Main Material | Glass fiber reinforced polymer + silicone sealing ring |
| Built-in Mechanism | Overpressure relief valve & vacuum balance return valve |
This authentic pressure-regulating cap offers complete platform compatibility across VOLVO's high-tonnage and mid-range infrastructure equipment arrays:
Medium Crawler Excavators: EC135B, EC140B, EC160B, EC180, EC200B, EC200D, EC210B, EC210B Prime.
Heavy Crawler Excavators: EC240B, EC240B Prime, EC250D, EC290B, EC290B Prime, EC330B, EC350D, EC360B, EC380D, EC460B, EC700B, EC750D.
Continuous Coolant Overflow: Fluid constantly escapes through the overflow tube, necessitating frequent system liquid replenishment.
Radiator Hose Shrinkage: Hoses collapse or shrink flat after machine shutdown cooling due to an abnormal internal vacuum pressure imbalance.
Crystallization Residue: Accumulation of dried coolant crust around the cap threads indicating ongoing high-pressure steam leakage.
Supplier: Xuzhou Sinoswift Import & Export Co., Ltd.
Contact: +86 13701956981
Email: [email protected]
Service: Ample inventory, volume discounts available, fast customs clearance, and accurate model cross-mapping.
All manufacturer names, engine classifications, and equipment numbers are specified solely for compatibility reference. A qualified pressure cap stabilizes cooling pressure effectively, restrains liquid boiling and cavitation, and fully protects your heavy-duty engine under high-load operations.