Cal Custom 15 Inch Finned Aluminium Transmission Oil Cooler

Heat sink design produces high heat transfer with minimal airflow

• External and internal heat dissipating fins
• Compact 3” diameter core can be mounted in a variety of locations including frame rail, radiator bottom and floorboards.
• Can cool transmission fluid, fuel, engine oil, power steering or gear lube
• Satin aluminium finish
• Made from very high quality thick aluminium to prevent warping or twisting
• Single pass design

• Application: This 15 inch Cal Custom cooler suits transmission fluid, engine oil, power steering or gear lube cooling on street and performance vehicles where a compact, heat sink style cooler is needed rather than a full tube and fin radiator style unit.

• Size/Spec Context: The 3 inch diameter core keeps mounting flexible, fitting along the frame rail, near the radiator, or under the floorboards where a slimline single pass cooler is required. At 15 inches it suits lighter duty cooling tasks where space is tight compared to the larger 18, 24 and 30 inch options in the range.

• Construction Note: Built from thick aluminium with external and internal heat dissipating fins, designed to resist warping or twisting under continuous heat cycling. The single pass design pushes fluid through once for efficient heat transfer with minimal airflow required.

• Fitment Note: Suits a wide range of transmission, engine oil, power steering and gear lube applications. Confirm your existing line size and fitting type before ordering, as the cooler ports will need to match your cooler line fittings.

• What to Pair With: Commonly paired with transmission cooler lines, hose barb fittings and mounting brackets to complete the install.

• Practical Buyer Tip: Because it is a single pass design, mount it in a location with reasonable airflow even though it is rated for minimal airflow, as this will improve cooling performance on hot Australian summer drives.