K20 / K24 K-Series High-Flow Intake Manifold – 90mm Throttle Body – Dual Direction Design

📝 Description

This high-performance intake manifold is designed for K20 and K24 K-Series engines.

The manifold features a dual-direction (reversible) design, allowing flexible throttle body positioning depending on your engine bay layout. This makes it ideal for custom builds, engine swaps, turbo setups, and tight engine bay configurations.

Developed as an improved version of a well-known aftermarket racing manifold concept, this design includes larger intake ports and optimized internal airflow geometry for increased performance potential.

This updated version features reinforced construction:

Pipe wall thickness has been increased by +4mm for improved strength and durability.

The engine mounting flange thickness has been increased by +5mm, bringing the total flange thickness to 15mm for enhanced rigidity and sealing stability.

These improvements provide better resistance against vibration, boost pressure, and thermal stress — especially important in high-performance and turbocharged applications.

⚙️ Key Features

✔ Compatible with K20 & K24 K-Series engines

✔ Designed for 90mm throttle body

✔ Dual-direction / reversible installation

✔ Enlarged intake ports for improved airflow

✔ Optimized plenum volume

✔ Reinforced pipe walls (+4mm thickness)

✔ 15mm thick engine mounting flange (+5mm reinforced)

✔ Embedded bushing mounting system for secure engine block installation

✔ Suitable for naturally aspirated and turbocharged applications

🧵 Recommended Printing Materials

Runners & flange: CF12 / CF15 / CF20 (Carbon Fiber Reinforced Filament recommended)

Plenum (cost-efficient option): ASA filament

Heat-resistant epoxy coating is recommended for long-term durability in high-temperature environments

⚠ Important Notice

This is a performance-oriented custom part.
Professional installation and proper ECU tuning are strongly recommended.

This product is not affiliated with, endorsed by, or associated with any vehicle manufacturer or aftermarket brand.

File redistribution, resale, or unauthorized sharing is strictly prohibited.

3d printed