Radiator Filler Necks for Repair, Replacement and Rebuilding
JJ Radiator supplies aluminum, brass, copper and CNC filler necks for radiator repair workshops, rebuilders and aftermarket distributors. Available in multiple sizes and connection types.
Product Categories
Filler Necks Supplier for B2B buyers, distributors, repair shops and aftermarket sourcing worldwide.
Aluminum Filler Necks
Lightweight, corrosion-resistant necks for modern radiator applications in passenger cars and light trucks.
Brass / Copper Filler Necks
Traditional material for heavy-duty radiator repair work and older vehicle rebuilding.
CNC Filler Necks
Precision-machined necks for custom radiator builds and specialty applications where standard shapes do not fit.
Special Filler Necks
Non-standard shapes and sizes for unique or older radiator models that need exact dimensional matching.
Frequently Asked Questions
Can I order filler necks by size only?
Yes. Send the outer diameter, inner diameter and height, plus a photo if available. OEM number helps speed up matching.
Do you support mixed orders with other cooling parts?
Yes. Filler necks can be ordered together with radiator tanks, caps and repair tools in one shipment.
What materials do you offer?
Aluminum, brass, copper and CNC-machined options. Material choice depends on application and market preference.
Can I send a sample for matching?
Yes. A photo of the old filler neck with basic dimensions is usually enough to start checking and matching.
Product Images
Representative product photos for B2B reference. Send your OEM number or sample photo for exact matching.
Need filler necks checked?
Send your OEM number, vehicle model, quantity, destination country and product photos. We will help check suitable options and reply with practical next steps.