LSX 92mm Cathedral Port Intake Inlet Manifold for GEN III LS1, LS2, LS6

FAST 54039B LSX™ 92mm Intake Manifold, Cathedral Port Heads, LS1, LS2, LS6.

Forget about inferior knock-offs, the patented FAST LSX™ 92mm Black Intake Manifold from FAST™ is the only three-piece Gen III composite LS manifold proven to deliver increased performance without compromising bottom-end drivability or high RPM power. For both street and racing applications, the new black intake manifold is an easy bolt-on installation for GM Gen III (LS1, -2 & -6) engines and is designed to work with the FAST™ Big Mouth Throttle Body™.

The new FAST™ LSX™ 92mm Black Intake Manifold maintains the performance gains achieved over stock LS1 & LS2 intake manifolds with no loss in drivability or low RPM torque. While the new stylish, black intake manifold delivers terrific performance right out of the box, it can be ported by the customer for even more flow. As requested by previous LSX™ customers, the intake features the added benefits of corrosion-free stainless steel assembly bolts, an improved throttle body sealing flange and o-ring gasket and threaded insert throttle body mounts that provide increased durability.

• Black version of original LSX™ intake w/ 92mm opening & added refinements

• Includes stainless steel bolts, threaded insert throttle body mounts & mounting hardware

• Incorporates high-quality polymer materials, which resist “heat sink” effect of aluminum

• Maximizes potential of other popular engine performance upgrades such as cylinder heads

• Improved throttle body sealing flange & o-ring gasket

• 50 state legal under C.A.R.B. E.O. #D-279-9

THROTTLE BODY OPTIONS:  

• FAST 54090    - 92mm

• FAST 54091    - 92mm

• LS OEM/Stock 3-Bolt Throttle Body w/ FAST 146029-KIT (ADAPTOR PLATE)

• LS OEM/Stock 4-Bolt Throttle Body

UEL RAIL OPTIONS

• •  FAST Anodized Billet Fuel Rail Kit: FAST 54023

  • OEM/Stock LS2 Fuel Rails w/ FAST - 54026 Adaptor kit 

  • OEM/Stock LS1/LS6 Fuel Rails