GEN Performance K-Series Intake Manifold Coolant Adapter Plate – K20 Manifold to K24 Head

GEN Performance K-Series Intake Manifold Coolant Adapter Plate – K20 Manifold to K24 Head

Upgrade your K-swap setup with the GEN Performance Intake Manifold Coolant Adapter Plate, designed to simplify installing a K20 intake manifold onto a K24 cylinder head. This adapter provides a clean and efficient solution for coolant routing differences, eliminating the need for complex modifications.

On K24 engines, the coolant recirculation port is typically integrated into the intake manifold—something not found on K20 manifolds. This adapter resolves that issue by providing the proper coolant passage, allowing seamless compatibility across multiple K-series configurations.

Engineered to work with all K24 heads, including K24Z (R40), this adapter is also ideal for 9th Gen Civic Si applications, especially when running modified or cut RBC manifolds where coolant bypass differences exist.

Key Features

• Allows K20 intake manifold installation on K24 heads
• Compatible with K24A and K24Z (R40) engines
• Integrated 1/8” NPT port for coolant temperature sensor
• Designed for clean and efficient coolant routing
• Ideal for K-swap and turbo applications
• Can eliminate the need for additional manifold adapters in certain setups

Installation Options

• Spring-loaded tab design for easy installation and consistent sealing pressure
• Alternative option to tap the cylinder head for a more permanent mounting solution
• Designed to be installed directly to the head (no gasket required)
• Recommended to use Honda Bond or equivalent gasket maker for proper sealing

Vehicle & Engine Compatibility

• Honda / Acura K-Series Engines:
  • K24A / K24Z (R40)
  • Compatible with K20 intake manifolds
• Popular for K-swaps and performance builds

Installation Notes

• Adapter must mount directly to the cylinder head
• Do NOT use a gasket between the head and adapter
• Drilling and tapping may be required depending on install method
• Ensure proper sealing and alignment during installation

Tools Required (If Tapping Head)

• 6.5mm (or 1/4") drill bit
• 5mm (or 13/64") drill bit
• M6x1.0 tap

The GEN Performance K-Series Coolant Adapter Plate is a must-have for anyone performing a K20/K24 hybrid setup, delivering a clean install, proper coolant flow, and reliable performance for both street and track builds.