Honda B-Series DBW Adapter – Bosch 74mm Throttle Body 
 
In Stock – Ready to Ship
 
Bring modern throttle precision to your classic Honda platform.

The Ichiban Engineering Honda B-Series DBW Adapter allows you to install a Bosch 74mm electronic drive-by-wire throttle body directly onto your OEM or aftermarket B-Series intake manifold. Designed for tuners, fabricators, and ECU conversion enthusiasts, this adapter provides a clean, bolt-on solution for upgrading to a modern throttle system while maintaining OEM reliability and alignment.
 
Each Honda B-Series DBW Adapter is CNC-machined from aerospace-grade 6061-T6 billet aluminum, offering unmatched precision, strength, and an OEM-quality fit and finish. The internal transition is optimized for smooth airflow, ensuring consistent throttle response under boost or naturally aspirated conditions.
 
This adapter is a proven choice for B-Series engine swaps, standalone ECU builds, or anyone looking to integrate modern Bosch throttle control into their performance setup.
 
Key Features
 
Direct Bolt-On Conversion
Adapts the OEM Honda B-Series throttle body flange to accept a Bosch 74mm DBW throttle body — no cutting or fabrication needed.
CNC Billet Aluminum Construction
Machined from 6061-T6 aluminum for exceptional rigidity, durability, and perfect sealing.
O-Ring Sealed Design
Prevents air leaks and ensures stable performance under both boost and vacuum.
Complete Hardware Kit
Includes precision O-ring seal and stainless steel bolts for both manifold and throttle body sides.
Wide Manifold Compatibility
Fits popular B-Series intake manifolds including Skunk2 Ultra Street, PracWorks Carbon, and K-Power Industries.
 
Ideal for Drive-By-Wire conversions, K-to-B swap projects, or standalone ECU builds, the Honda B-Series DBW Adapter modernizes your throttle system with race-grade reliability and OEM-level precision.
 
⚙️ Fits all Honda B-Series intake manifolds using standard bolt patterns.
📧 For technical inquiries or custom requests, contact sales@ichibanengineering.com