AN6 Transmission Cooler Adapter Fittings, 6061-T6 Aluminum
Product description
Quick overview
For someone replacing or adapting a transmission cooler connection, this two-piece fitting set is aimed at setups that use a 1/4-inch NPSM port and an AN6 line. It connects an AN6 male flare end to a 1/4-inch-18 NPSM thread.
The stated applications include 4L60E, TH350, 700R4, TH400, 200-4R, TR6060, AOD, 4R70W, 4R100, and C5. That list is useful for narrowing the search, but the thread requirement matters more than the vehicle or transmission name alone.
The fittings are made from 6061-T6 aluminum alloy, CNC machined, and anodized. The maker describes them as suitable for fuel, oil, water, and other media, and says the material is intended to withstand high pressure and temperature.
How to use it
Match the adapter to both sides of the connection: the line side is AN6 male flare, specified as 9/16-18 UNF, while the other side is 1/4-inch-18 NPSM. Before ordering or installation, identify the thread type on the cooler or transmission port rather than assuming that a similar-looking 1/4-inch fitting will work.
The thread distinction is important here. These adapters use straight threads, not tapered threads, and the AN male side has a 37-degree flare. Ten en cuenta que a tapered port or a different thread standard is not the same connection, even if the fitting appears close in size, forcing a mismatch can prevent a proper seal. The maker says the angled AN side is intended to seal well when used with the matching connection.
Practical tips
A practical use case is replacing an OEM adapter while routing an AN6 transmission cooler line: check the port, confirm the line end, then choose the fitting only if both specifications match. The listed transmission applications provide a starting point, but the product description does not identify every year, vehicle configuration, or cooler setup, so the thread on your actual component remains the deciding detail.
Compared with buying a generic adapter based only on nominal size, this set gives you a defined AN6-to-NPSM transition and a stated material and machining process. That is useful when the system already uses AN6 line fittings. If your project calls for a different line size, tapered threads, or a different port standard, a different adapter is the more sensible route.
It suits you if your cooler connection is confirmed as 1/4-inch-18 NPSM and you need an AN6 male flare connection. Not the best choice if you have not identified the port thread or your setup uses another standard. No installation instructions or sealing components are specified in the available details, so plan around the requirements of your particular connection rather than assuming extras are included.
Practical tips
When checking fit, compare the existing adapter or port with the stated thread specifications and verify that the AN6 line end is also the one your setup requires. Keeping those two checks separate helps avoid buying based only on a transmission model name. The aluminum construction may suit a compact plumbing setup, but the listing does not provide dimensions, weight, or a pressure rating to assess clearance or a specific system limit.
Before you decide
What thread does the fitting use? The adapter connects an AN6 male flare, listed as 9/16-18 UNF, to a 1/4-inch-18 NPSM fitting. The threads on the NPSM side are straight, not tapered.
Which transmissions are listed? Applications named include 4L60E, TH350, 700R4, TH400, 200-4R, TR6060, AOD, 4R70W, 4R100, and C5. Confirm the port on your own setup before relying on the list.
What fluids is it described for? The maker lists fuel, oil, water, and other media. The provided details do not specify a pressure rating or fluid-specific installation requirements.
Should you buy it?
Choose this set when you have verified a 1/4-inch-18 NPSM port and want to connect it to an AN6 male flare line, the aluminum construction and listed transmission applications make that use case clear. Skip it if your connection is tapered, uses another thread standard, or still needs identification. In this kind of adapter purchase, matching the actual threads is a better basis for the decision than relying on a broad fitment list.