Copper Weld-On Radiator Filler Neck

Copper Weld-On Radiator Filler Neck is offered for Weld-on replacement or custom-build connection for automotive cooling systems. The selected dimensions, material and supply format are confirmed for your application and order quantity.
STANDARD PRODUCT SUMMARY
Details used for quotation
- Product reference
- 0001
- Catalog group
- Filler Necks
- Specification status
- Source listing reviewed; neck geometry and mating-cap fitment must be confirmed
- Material
- Copper weld-on connector
- Sizes / variants
- Big, medium and small neck options are listed; request exact dimensions before ordering
- Intended application
- Weld-on replacement or custom-build connection for automotive cooling systems
- MOQ
- Not published; quoted for the selected neck size and quantity
- Sample
- Confirm sample availability for the required neck size
- Packaging
- Export packing confirmed with the final size and quantity
- Customization
- Match by drawing, sample, dimensions or cap interface
- Lead time
- Confirmed after dimensions, quantity and packing are approved
Catalog information is a sourcing reference. Critical dimensions, materials, application, test requirements and commercial terms are confirmed for the selected product before an order is placed.
Product specification and available options
| Selection point | Product information |
|---|---|
| Material | Copper weld-on connector |
| Size options | Big, medium and small neck options are listed; request exact dimensions before ordering |
| Application | Weld-on replacement or custom-build connection for automotive cooling systems |
| Packing | Export packing confirmed with the final size and quantity |
Filler-neck dimensional references
The local supplier notes list the following small, medium and large references. Confirm the complete cap-seat profile and sample dimensions before selection. All dimensions below are in mm.

| Reference | Outside diameter | Inside diameter | Attachment diameter |
|---|---|---|---|
| Small | 43 | 31 | 21 |
| Medium | 56 | 41 | 30 |
| Large | 68 | 55 | 41 |
How to select the right version
Check neck opening, cap seat, attachment diameter and sealing depth. Specify aluminum or copper/brass tank material and the approved joining method. Small, medium and large labels are not a substitute for a dimensional drawing.

Workshop and application notes
Neck and cap geometry must be matched together. Inspect the completed joint and confirm the cap fit before putting the assembly into service.

Order information
Send the product reference, selected size or specification, quantity and destination. Add a drawing, dimensional photo or existing-part reference where a match is required. Packing, sample availability and delivery are confirmed for the selected order.

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