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Vacuum Port Adapter Fitting for GM LSA/LS9/LT4 Superchargers [1/8 in. NPT, Natural Finish]
InfoVehicle Info Needed
ICT BILLETPART NUMBER: 335-551387

Vacuum Port Adapter Fitting for GM LSA/LS9/LT4 Superchargers [1/8 in. NPT, Natural Finish]

$2600
ShippingShips on 11/17/2026
Lowest PriceLowest Price Guarantee

Vacuum Port Adapter Fitting
  • GM LSA, LS9 and LT4 Superchargers
  • 1/8 in. NPT Thread
  • Aluminum Construction
  • Natural Finish
  • Sold Individually

    This ICT Billet adapter threads into the factory MAP sensor port on LSA, LS9 and LT4 superchargers, opening up a 1/8 in. NPT port for adding a vacuum line, boost gauge or aftermarket sensor.

    ICT Billet 551387 Vacuum Port Adapter Fitting Features:

    • Fits GM LSA, LS9 and LT4 Superchargers
    • Also Fits Holley High Ram Intake Manifolds with MAP Sensor Port
    • 1/8 in. NPT Thread
    • Aluminum Construction
    • Natural Finish
    • Sold Individually
    • Part TypeAdapter Fitting
    BrandICT BILLET
    Package Height1.0
    Package Width1.0
    Package Length2.0
    Weight0.04 PG
    Part CategoryPerformance Parts
    ColorNatural
    QuantitySold Individually
    MaterialAluminum
    Part FitmentSemi Universal
    Vendor Part Number551387
    Package Qty1
    Package TypeEA
    Some parts are not legal for use in California or other states with similar laws / regulations
    p65 warning