TracTuff K24Z Billet Water Neck Flange

Description

After fielding several dozen tech questions related to air pockets, burping, and overheating problems associated with a number of K24Z swaps, I noticed a trend.

Most of the issues seemed to have come from those that were trying to route the outlet through the passenger side (exhaust side) of the engine bay, and after sitting down and dissecting the problem with a few customers, I knew I the culprit. The engine’s 15° tilt aims the outlet upwards from the factory and when routed to the driver side (the way it was meant to exit) you really don’t have any problems, unless your hose dives down under the intake and then back up to connect to the radiator. However, when routed to the passenger side… you INSTANTLY have a problem! If you look at the point where the hoses exit… it’s well below the rectangle port in the cylinder head, meaning you can’t get water to fill any higher, even if the radiators fill point is higher. You can watch this video if you’d like to know more.

If you were able to eventually fill the inherent air pocket, only to find the system acting like it needs to be burped again, you may be experiencing an air pocket that has formed as a result of normal operation or has simply moved. Understand that it should never have collected there… it should have moved out the upper hose and onto the radiator, because its all HIGHER..

The TracTuff K24Z water neck fixes the issue for those looking to exit the passenger side and works normally for those exiting the driver side by creating an adapter that allows the flange bolt pattern to be rotated, eliminating the downward exit and the air pocket associated with it. The flange adapter does the job of directing water as well as converting the bolt pattern so that the water neck can sit perfectly level, regardless of whether you want the upper hose to exit the intake or exhaust side!

The design incorporates two -16 ORB ports so you can select the outlet orientation and the type of connection. An ECT sensor port is included, but it has been moved from the OEM location. The hardware kit includes four M8 socket head bolts, a -16 ORB plug, your choice of 1.25″ hose barb or -16 male flare port fitting, and two OEM o-rings. If you are installing your K24Z into an RWD project, you only need 1.99″ of space between the firewall and the water neck mounting surface to run this!

NOTE: If you would like to retain heat, you will need to convert one of the -16 ORB ports to a smaller/ more common thread size to a slip hose fitting.