Intake Manifold LS3 - LSXR 102mm Black Finish

The FAST Electronics Intake Manifold LS3 LSXR 102mm Black Finish is a precision-engineered intake manifold designed for GM LS-series engine platforms. Built with a 102mm throttle body flange and rectangle port multi-port design, this plastic intake manifold delivers optimized air distribution and throttle response for LS3 powerplants. The black finish provides a clean, finished appearance in the engine bay while the LSXR designation indicates compatibility with round-port LS3 cylinder heads.

The 102mm throttle body flange specification is critical for matching modern electronic throttle control systems and fuel injection tuning platforms. FAST Electronics intake manifolds are engineered for maximum flow efficiency across the RPM band, supporting both naturally aspirated and forced induction applications. The rectangle port design ensures proper alignment with LS3 head ports, minimizing turbulence and flow separation for consistent combustion efficiency. The plastic construction reduces weight compared to cast-iron alternatives while maintaining structural integrity under sustained engine operation.

This intake manifold is intended for engine builders, performance enthusiasts, and shops rebuilding or upgrading GM LS-series powerplants. Whether the application is high-performance street driving, track work, or naturally aspirated builds, the LSXR platform requires precision intake manifold matching to deliver peak performance. The LS3 LSXR configuration represents one of the most popular modern GM engine platforms for engine swaps, restorations, and performance upgrades. Proper intake manifold selection ensures fuel metering accuracy, emission compliance, and maximum horsepower realization from the LS3 platform.

FAST Electronics is recognized in the performance engine building community for fuel delivery and engine management systems. This intake manifold carries the MPN 146102B and UPC 036584203704 for accurate part identification and fitment verification. Weighing 20.41 lbs with overall dimensions of 16.65 x 10.3 x 28.6 inches, the manifold integrates seamlessly with complete LS3 fuel injection and engine control packages for reliable, efficient engine operation.