Australian Owned & Operated
Cooling & Oil System > Radiator Overflow Tanks
Browse radiator overflow tanks and expansion header tanks for custom, classic and performance builds across Australia. We stock aluminium and stainless steel designs in polished and black finishes, including rectangular and round styles in various capacities. Ideal for coolant overflow management and clean engine bay setups, shop quality radiator overflow tanks online with fast Australian delivery.
Aluminium 2.5 Litre Rectangular Shaped Radiator Expansion Header Tank
Cal CustomFabricated black aluminium 2.5 litre capacity Includes cap Includes two inlet barb fittings, 10.7mm & 14.3mm Also includes overflow/outlet bar...
View full detailsCal Custom 2" x 13" Radiator Overflow Tank Polished Stainless Steel
Cal Custom2" x 13" cylinder shape Polished stainless steel Maintains OEM performance
Cal Custom 2" X 10" Radiator Overflow Tank Polished Stainless Steel
Cal Custom2" x 10" cylinder shape Polished stainless steel Maintains OEM performance
Cal Custom 3" X 10" Hexagonal Radiator Overflow Tank Polished Aluminium
Cal Custom3" x 10" hexagon shape Polished aluminium Mounting hardware supplied Part Number: CAL-3544
Cal Custom 10" X 2-3/8" Radiator Overflow Tank Polished Billet Aluminium
Cal Custom10" x 2-3/8" cylinder shape Knurled O-ring cap for a no-leak seal Stainless steel hardware included Aluminium push-on fittings included ...
View full detailsCal Custom 3" x 16" Radiator Overflow Tank Polished Stainless Steel
Cal Custom3" x 16" cylinder shape Polished stainless steel Maintains OEM performance
Cal Custom 3" x 10" Radiator Overflow Tank Polished Stainless
Cal Custom3″ x 10″ cylinder shape Polished stainless steel Maintains OEM performance
Cal Custom 2" X 15" Radiator Overflow Tank Black Finned Aluminium
Cal CustomFinned aluminium Black anodised 2” x 15” tank (17-1/2” including inlet/outlet on the bottom) Billet cap with o-ring Part Number: CAL-3521
Aluminium 1.6 Litre Rectangular Wedge Shaped Radiator Expansion Header Tank
Cal CustomFabricated black aluminium 1.6 litre capacity Includes cap Includes two barb fittings, inlet and overflow/outlet Tank measurements: Height: 124mm...
View full detailsCal Custom 14" X 2-3/8" Radiator Overflow Tank Polished Billet Aluminium
Cal Custom14" x 2-3/8" cylinder shape Knurled O-ring cap for a no-leak seal Stainless steel hardware included Aluminium push-on fittings included Internal r...
View full details2" X 13" Radiator Overflow Tank Black Finned Aluminium
Cal CustomFinned aluminium Black anodised 2” x 13” tank (15” including inlet/outlet on the bottom) Billet cap with o-ring Part Number: CAL-3520
Cal Custom 2" X 19" Radiator Overflow Tank Polished Stainless Steel
Cal Custom2" x 19" cylinder shape Polished stainless steel Maintains OEM performance Part Number: CAL-3519
Cal Custom 2" x 17" Radiator Overflow Tank Polished Stainless Steel
Cal Custom2" x 17" cylinder shape Polished stainless steel Maintains OEM performance
Cal Custom 2" x 15" Radiator Overflow Tank Polished Stainless Steel
Cal Custom2" x 15" cylinder shape Polished stainless steel Maintains OEM performance