74mm Bosch DBW to Honda RBC / RRC Throttle Body Adapter
 
In Stock – Ready to Ship
 
Bring modern throttle control to your K-Series build.

The Ichiban Engineering Bosch 74mm Drive-By-Wire to Honda RBC / RRC Throttle Body Adapter is engineered for precision, reliability, and performance. It allows effortless installation of a Bosch 74mm electronic (DBW) throttle body onto any OEM Honda RBC or RRC intake manifold, giving your setup smoother airflow and advanced drive-by-wire compatibility.
 
Each adapter is CNC-machined from aerospace-grade 6061-T6 billet aluminum, ensuring a perfect fit, leak-free seal, and exceptional strength under boost. The internal transition has been optimized for efficient airflow and smooth response — ideal for K-swaps, standalone ECU conversions, or upgrading from cable throttle setups.
 
Key Features
 
Direct Bolt-On Conversion
Installs a Bosch 74mm DBW throttle body onto Honda K-Series RBC or RRC intake manifolds — no fabrication required.
CNC-Machined Billet Aluminum
Made from high-grade 6061-T6 billet for precision, strength, and a flawless OEM-style finish.
O-Ring Sealed Design
Includes precision-cut O-ring for a 100% airtight, leak-free seal under boost and high RPM.
Complete Stainless Hardware Kit
Includes all mounting bolts for both manifold and throttle sides — rust-proof and ready to install.
Optimized for Performance Builds
Perfect for tuners converting to DBW throttle control, K-Swap applications, or standalone ECU setups.
 
This adapter brings modern Bosch drive-by-wire reliability to your Honda platform, improving throttle precision while maintaining a clean, OEM-quality appearance.
 
⚙️ Fits all Honda K-Series engines with RBC / RRC manifolds.
📧 For fitment inquiries or bulk orders, contact sales@ichibanengineering.com