18" Finned Aluminum Dual Pass Heat Sink Transmission Cooler

• Dual pass heat sink design cools transmission fluid, no airflow needed

• Compact size fits tighter mounting spaces than the 24" version

• Universal fit with 1/4" NPT female threads, hose fittings included

• 18" tube length; confirm 20 1/4" x 3 1/4" overall footprint fits

Cooler transmission fluid helps prevent damage under demanding conditions, supports more reliable shifting, and extends automatic transmission life. This dual pass heat sink transmission cooler is built to deliver that benefit without requiring airflow, thanks to its compact finned aluminum design — making it mountable in a wide range of locations, including tighter spaces than the 24" version accommodates.

This cooler fits any application using 1/4" NPT hose fittings, with 1/4" NPT female threads on both inlet and outlet. Two hose fittings are included. Fluid capacity is 22 oz.

Before installing, confirm your available mounting space against the full 20 1/4" x 3 1/4" overall dimensions — the "18"" in this cooler's name refers to tube length, not the total footprint. Also verify your hose fitting size matches 1/4" NPT before ordering.

Applications
Universal fit for any application using 1/4" NPT hose fittings; used for automatic transmission cooling on street, tow, and performance applications where space is more limited than the 24" version allows, and as a supplemental or replacement transmission cooler.

Sizing
18" tube length, 20 1/4" x 3 1/4" overall dimensions, 2 cooling rows, 22 oz fluid capacity, 1/4" NPT female threads (inlet and outlet).

Does this cooler need airflow to work?
No — this is a heat sink design that doesn't require airflow, so it can be mounted in a variety of locations, including areas without direct air exposure.

Is 18" the total length I need to plan mounting space for?
No — 18" refers to the cooler's tube length. The full mounting footprint is 20 1/4" x 3 1/4"; use that figure when confirming available space.

What's the difference between this and the 24" version?
This 18" version has a smaller overall footprint (20 1/4" x 3 1/4" vs. 26 1/4" x 3 1/4") and lower fluid capacity (22 oz vs. 28 oz), suited to tighter mounting spaces than the 24" version allows.

What hose fitting size does this cooler use?
1/4" NPT female threads on both inlet and outlet. Two hose fittings are included.

Can this be used as a supplemental cooler, or does it replace the factory one?
Either — it's suited to both supplemental installation alongside an existing cooler and full replacement installation.