The Skunk2 74mm throttle body adapter lets you install an early K (PRB) cable-driven Pro Series throttle body onto late-model K (RBC) flange intake manifolds, a must when running a Pro Series throttle body on a K-swapped vehicle with the popular RBC/RRC manifolds. It is CNC-machined from 6061 billet aluminum and anodized for corrosion resistance, with a 74mm opening, 72mm exit and a notch for the idle air control valve. Gasket and hardware are included.
| Type | Throttle body adapter (Honda PRB throttle body to RBC manifold flange) |
| Material | 6061 billet aluminum, anodized |
| Size | 74mm opening / 72mm exit, IACV notch |
| Included | Gasket and mounting hardware |
| Part Number | 309-05-0125 |
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