FAST 146106 is the LSXHR intake manifold for compatible LS3 rectangular-port cylinder heads, supplied in the long-runner configuration.
Check hood clearance, throttle-body compatibility, injector/fuel-rail setup and coolant crossover routing before ordering. The installation instructions require preparation of the selected MAP-sensor port and may require coolant-crossover changes.
This is the LS3 version; the manufacturer uses separate part numbers for LS1 and LS7 applications. Have the installer follow the exact FAST LSXHR instructions and verify calibration requirements for the engine.
