2008 5.3L Hummer H3 Alpha Supercharging Systems


This product has been discontinued and is no longer available.

Pricing listed below.

Stock 300 HP 320 lb/ft
Vortech 420 HP 417 lb/ft
V-3 Si-Trim
Boost Pressure:
8-8.5 PSI at redline

System Components

  • 3.33" driven pulley
  • Fuel system upgrade includes replacement fuel injectors
  • Includes ECU "re-flash voucher". ECU will be sent by installer to Vortech for re-flash. Shipping box and pre-paid tag are included in the kit box. Vortech will send it back to customer directly via pre-paid Fed-Ex.
  • Air inlet assembly features a molded air inlet cover with Vortech logo and large diameter MAF housing
  • Stainless steel replacement engine coolant pipe
  • Billet aluminum supercharger mounting bracket assembly includes idler, drive belt and all hardware
  • Air/water charge cooler system. Charge cooler assembly includes:
    • Welded aluminum charge cooler core with discharge tubes, Bosch compressor bypass valve, silicone elbow, sleeves and stainless steel clamps
    • All necessary tubes, hoses, clamps and plumbing
    • Compact water circulation pump for closed loop cooling
    • Highly effective water cooler

Supercharger kit installation time is rated at 10-12 hours.

50-State Smog Legal

Complete systems are smog legal per California Air Resources Board (CARB).

CARB Executive Order # D-213-27

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