K Series Swap Intake Manifold Coolant Adapter Plate – Compatible with Honda/Acura K20 K24 RSX

The K24 Intake Manifold Adapter is a simple and easy way to install K20 style manifolds on K24 heads. Designed to work with all K24 heads including the K24Z-Series (R40) heads. This can also be used to install K20 manifolds or cut RBC manifolds on 9th gen Civic SI as the water bypass is slightly different and you will not need an intake manifold adapter when using the adapter.

This adapter features a 1/8 NPT port for a coolant temp sensor commonly used in swap cars. The Intake Manifold Adapter can be installed either using our spring loaded tab or by tapping the head. Tapping the head will require a 6.5mm drill bit (to finish the blind hole in the adapter), 5mm drill bit (to drill the head), and M6x1.0 Tap.

We recommend to use HondaBond when installing as it provides a strong seal.