Description

The TracTuff stainless steel M28 x 1.0 port adapter converts a relatively odd thread to something useful. The most popular use for the adapter has been to add a outlet/ feed for heater core or a turbo feed… especially helpful for customers who have purchased my EXTREME CLEARANCE water neck kit, which does not offer a heater core feed.

If you plan to use this as a heater core feed, I recommend a -10 male flare port fitting, but you plan on using it to feed a turbo… you’ll likely need a -6 male flare port fitting which wont be available from me for a few more weeks.

NOTE: If you own a k series, the M28 x 1.0 AN Adapter screws into the large threaded passage just above the oil filter. If your block was not equipped with an oil cooler, you will need to remove a hex plug that is deep inside that passage. If your block was originally equipped with an oil cooler and you are no longer using the oil cooler assembly, you will need my Block Port Block Off. The M28 x 1.0 AN Adapter requires the use of a Honda crush washer (90401-PR4-000), which is not supplied.

Shown with -10 ORB to -10 male flare option.