Skunk2 Adapter Plate for H22 with RBC Intake Manifold & Thermal Gasket Fits: Honda H22 Engines Description: Skunk2 adapter plate for bolting the RBC intake manifold from the K20 to the H22 cylinder head. One of the best dollar for dollar upgrades for any H22 engine. 12-15whp is an average gain. Skunk2 Pro Series Honda/Acura H to K Intake Manifold Adapter. Skunk2’s all-new H2K Intake Manifold Adapter now offers H-series enthusiasts even more flexibility. Thanks to Skunk2’s 6061-T6 billet aluminum manifold adapter, any K-series intake manifold, including individual throttle bodies as well as Skunk2’s Pro Series manifolds, can be bolted onto any H22A cylinder head. K-series intake manifolds feature shorter runners and larger plenums when compared to H-series manifolds, yielding better performance as well as increased hood and firewall clearance. H2K Intake Manifold Adapters fit seamlessly in between the manifold and cylinder head for a factory-like look. Each unique, CNC-machined and hard-anodized intake manifold adapter features recessed holes for easy adaptation. All necessary mounting hardware is included with each adapter, making for an easy installation. Skunk2’s H2K Intake Manifold Adapters are designed to work with all K-series intake manifolds in most vehicles with most engine mount kits. H2K Intake Manifold Adapter; To Mount K Series Intake On H Series Motor. Not for use with Prelude chassis (all generations); Complement your H2K Intake Manifold Adapter with a K2B Throttle Body Adapter.. Skunk2 Pro Series Honda/Acura H to K Intake Manifold Adapter (Race Only). H2K Intake Manifold Adapter. H to K Int. Whether its for a full rebuild or some standard maintenance, the proper engine components are needed to make sure your vehicle is running smooth. Intake manifolds direct the airflow from the air intake into your vehicle’s cylinder head. An aftermarket intake manifold can increase the airflow and horsepower of your engine.