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LSA LS9 LT4 LS Supercharger Vacuum Port 1/8 NPT Hose Adapter Holley High Ram MAP

In stock
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LSA / LS9 / LT4 Supercharger Vacuum Port 1/8"NPT Adapter

Compatible with all LSA, LS9, and LT4 OEM superchargers

  • Compatible with Holley high ram intake manifold with MAP sensor port (replaces sensor)
  • Has 1/8" NPT hole to add a hose barb or AN fitting
  • Includes: 1 plug, with FKM oring, and USA made bolt
  • Made in Wichita, Kansas from aerospace grade, USA produced, billet aluminum

More Information

Manufacturer Part Number 551387
UPC 797822586187
Weight 0.180000
ICT Manufacturer ICT Billet
United States United States
Length Inches 2
Width Inches 2
Height Inches 1

WARNING - This product can expose you to chemicals including lead, which is known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to


ALUMINUM: Most of the aluminum alloys used today contain some level of lead, usually less than .1%. Lead is known to the state of California to cause cancer and reproductive harm. Most aluminum alloys are physiologically inert in their solid form, and the lead is contained within, however user-generated dust and/or fumes may pose a hazard if inhaled or ingested. Heating beyond a certain temperature may also provide avenues for exposure.


STEEL (steel bolts):  Steel is an iron alloy with several metals including Nickel and Chromium. Both Nickel and Chromium are known to the State of California to cause cancer and reproductive harm, respectfully. This warning applies to stainless steels as well.