Speedmaster 1-539-001 LS Throttle Body Adapter 102mm 4-Bolt to 85mm 3-Bolt

The Speedmaster 1-539-001 throttle body adapter allows you to mount a larger 102mm 4-bolt throttle body to an LS1 intake manifold with an 85mm 3-bolt configuration. This adapter is essential for performance enthusiasts looking to upgrade their throttle body while maintaining compatibility with the factory LS1 intake.

Key Features:

• Adapts 102mm 4-bolt throttle bodies to 85mm 3-bolt LS1 intakes
• Precision CNC-machined from aerospace-grade aluminum for strength and durability
• Tapered bore design ensures smooth airflow transition and minimizes turbulence
• Direct bolt-on installation with no modifications required
• Lightweight construction reduces overall engine weight
• Corrosion-resistant finish for long-lasting performance

This adapter plate is designed specifically for LS engine applications and provides a reliable solution for throttle body upgrades. The tapered design optimizes airflow between the larger throttle body and smaller intake manifold opening, helping to maximize performance gains from your throttle body upgrade.