RB26 Intake Manifold to RB25DET Cylinder Head Adapter 
Upgrade your RB build with our precision-engineered RB26 Intake Manifold to RB25DET Cylinder Head Engine Adapter, designed to fit the original Nissan RB26 intake manifold onto an RB25DET cylinder head with perfect alignment and performance.
✅ Features:
• Precision CNC machined from 6061-T6 billet aluminum
• 58mm thickness for optimal fitment
• Includes thermal Teflon gaskets for both sides to reduce heat transfer and improve intake efficiency
• Complete water passage integration, allowing proper coolant circulation through the RB26 intake manifold
• Available in custom anodized colors
• Worldwide shipping available
Why use this adapter?
✔ Retain the legendary RB26 intake manifold on your RB25DET setup
✔ Improved airflow potential compared to the factory RB25 intake manifold
✔ Supports higher horsepower applications and larger throttle body conversions
✔ Better intake runner design for increased performance
✔ Strong, leak-free billet construction for long-term reliability
✔ Perfect for street, drift, drag, and track builds
Built with precision, engineered for performance.