Hours: Monday - Friday 8 a.m. - 5 p.m.

TracTuff RBB K24 Coolant Bypass and RWD Water Neck Combo


TracTuff RBB K24 Coolant Bypass and RWD Water Neck Combo

$299.95 $264.95

In order to run your K24 in RWD position, you will need to change the water neck housing on the firewall side of the head to clear.  With this piece, you will have ample room between the engine and firewall (when using our mount kit of course:)  You can also opt to add fittings to these for running heater hoses and utilizing the factory HVAC system.


The TracTuff K20Z3/ K24A2 water bypass adapter allows RAA, RBC, RBB, and RSP cylinder head owners to run the more popular aftermarket intake manifold options that were designed for the earlier PRB/ PRC flange. The PRB/ PRC style manifolds do not have an integrated coolant passage so the coolant bypass hole is left open when used together.

Even if you don’t plan on running a PRB/ PRC style manifold… there are plenty of benefits that make this product a must have! The biggest benefit is in the reduction of intake manifold temps by eliminating the heat transfer/ heat soak associated with hot coolant running through the manifold. By modifying the manifolds flange (cutting off coolant portion) and running our adapter the coolant is kept away from the manifold completely, just like what you would find on the earlier PRB/ PRC heads, so NOW your Hondata IM gasket will really work!! We’ve seen drops as much as 18°!! Not to mention, the additional benefit of no longer having to drain the coolant when removing the intake manifold for maintenance or swaps… makes things a real SNAP!

*Please allow 2-3 weeks for delivery because in some cases these may be made to order.


Make your cooling system easy for your K24 Swap Easy!

Additional information

Weight 4 lbs
Dimensions 6 × 6 × 6 cm

443-671-PURE (7873)

8328 Veterans Highway Suite G
Millersville, Maryland 21108

Hours: Monday – Friday 8-5