XZR8®
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Throttle Diameter92mm
Cylinder Head TypeCathedral Port
Compatible EnginesGM Gen III LS1, LS2, LS6 (Standard Deck)
Material CompositionGlass-Filled Polymer
Throttle Plate MaterialBillet Aluminum
Fuel System TypeLS2 / LS6 Bolt-On
Mounting Configuration3-Bolt & 4-Bolt Pattern (Inserts Included)
Operating Speed Range1,800 - 6,000 RPM
Injection System TypeMulti-Port EFI
Kit ContentsManifold, 92mm Throttle Body, Fuel Rails, Hardware, Gaskets, O-Rings
Manufacturer No.
54039B54092
Engine Part No.
GM LS1 5.7LGM LS2 6.0LGM LS6 5.7LGM LQ4 6.0LGM LQ9 6.0LGM LM7 5.3LGM LY5 5.3L
Interchange No.
300-122BK146302B
Fitment Vehicles
Chevrolet Corvette C5 (1997-2004)Chevrolet Trailblazer SS (2006-2009)Chevrolet Camaro (1998-2002)Pontiac GTO (2004-2006)Cadillac CTS-V (2004-2007)Pontiac Firebird (1998-2002)

Engine Air Intake And Fuel Delivery - Industrial Encyclopedia

FAST LSX 92mm polymer intake manifold kit with 92mm Big Mouth throttle body and LS2-style fuel rails for GM Gen III cathedral port engines (LS1, LS2, LS6), delivering improved airflow and torque without drivability loss.