TracTuff RBB/ RBC Rear Wheel Drive K Swap Water Neck

The K Series RWD upper water neck addresses a few concerns for the community swapping a K24A into various front-engine rear-drive chassis. 

Normally, the water neck on a K is right up front and a few inches from the radiator and pretty equal in height, but despite that... the K has been notorious for being a real bitch to bleed! Now, rotate the motor 90°, tilt it back, make the hose go under the intake manifold, and boom! You've introduced a spot for air to accumulate.

If the radiator fill point is equal in height to the bleed on this water neck, you should be fine with this entry-level product, but if the radiator fill point is lower... You should be looking at my fill neck at a minimum.

The fabricated K Series water neck replaces the bulky OEM piece with its huge heater core fitting and EGR platform. The water neck starts with a CNC machined 6061-T6 aluminum flange and has a custom mandrel-bent 1.25" tube welded to it that mimics the OEM S2000 outlet position. The flange incorporates a 1/2" NPT heater port that can also be used as an outlet if you are not running in-cabin heat. 

The hardware kit includes four M8 socket head bolts, a 90° heater hose fitting, a heater port plug, an EGR Passage Plug, and a pair of o-rings. 

NOTE: Made to Order - Please allow 2-3 Business Days for this product to be made and ship - If you are interested in a specific design that varies from this, please email us at sales@tractuff.com.

The accessory port option was originally offered for those looking for a spot to add an aftermarket sensor, but has also been used for the Honda single-prong sensor (shown). The accessory port selection is optional; I only offer  1/8" NPT or 1/8" BSPT (Honda Single Prong Sensor). The port is angled as shown.