Start with the application branch
Photograph the installed tank from above and both sides, measure mounting centers and neck diameter, and record cap, hose, sensor and bracket scope.
Staining or low level does not identify the cause of coolant loss. Pressure diagnosis and hot-system handling belong with qualified service procedures.
Identification checkpoints before price comparison
For coolant expansion tanks, record generation and powertrain, verify tank outline and mounting centers, and photograph cap neck, level marks and hose ports on both the installed and removed component.
Scoped OE reference
Catalogue research did not reconcile one stable Honda Civic reference for coolant expansion tanks across generation, powertrain and cap-neck variants. The old label, casting and vehicle-specific catalogue result remain necessary before quotation. Use a clear record of cap neck, level marks and hose ports to continue the review without assigning a guessed number.
Common order boundaries
Build a comparable B2B order line
Keep cap, tank and hose requests explicit; record whether quantity is individual tanks or packed service assemblies.
Quote reservoir tank only separately from tank with pressure cap, documenting trial and repeat quantity, destination, Incoterm, label requirements and included hardware for that SKU.
Export packing checkpoint
Protect translucent walls and mounting ears, cap every opening and prevent heavy components from nesting inside the tank.
Common buyer questions
Which Civic details separate coolant expansion tanks variants?
Photograph the installed tank from above and both sides, measure mounting centers and neck diameter, and record cap, hose, sensor and bracket scope. Record generation and powertrain, tank outline and mounting centers and cap neck, level marks and hose ports before comparing candidates.
What should a coolant expansion tank photograph show?
Photograph the complete installed location and removed component, then add clear views of cap neck, level marks and hose ports, mounting points and every connector, port or seal. Use named endpoints and units for any measurement.
Why is no OE number shown for Coolant Expansion Tanks?
Catalogue research did not reconcile one stable Honda Civic reference for coolant expansion tanks across generation, powertrain and cap-neck variants. The old label, casting and vehicle-specific catalogue result remain necessary before quotation. A visually similar component from another Civic branch is not a safe substitute for vehicle-specific evidence.
How should reservoir tank only be prepared for export?
Keep cap, tank and hose requests explicit; record whether quantity is individual tanks or packed service assemblies. Protect translucent walls and mounting ears, cap every opening and prevent heavy components from nesting inside the tank. State quantity per SKU, destination, packing and buyer-label requirements separately.