SKU: BBK1580
UPC: 197975015808
MPN: 1580
The BBK Performance 66mm Throttle Body for 1989–2000 Ford Truck 4.0L engines is a direct bolt-on upgrade designed for builders looking to enhance airflow and throttle response. This component is ideal for those building street trucks, off-road vehicles, or weekend warriors, as it allows the engine to breathe more freely than the factory design.
Engineered with precision CNC-ported internals, this throttle body features a matched velocity design that optimizes fuel atomization and ensures even cylinder distribution across the RPM range. The 66mm bore significantly improves intake velocity compared to the stock 60mm design, which helps reduce vacuum losses and enhances volumetric efficiency.
This throttle body is most effective when paired with intake manifold modifications, high-quality fuel injectors, and proper engine tuning, making it a common upgrade for serious 4.0L performance builds. Installation is straightforward, requiring no modifications to stock throttle cable routing or sensor fitment, making it accessible for home mechanics with basic tools.
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