Vortech Superchargers Supercharging System w/ V-3 Si-Trim & Charge Cooler - Polished (2008 Hummer H2 6.2L) 4GL218-338L
Polished V-3 Si-Trim Supercharging System with Charge Cooler for 2008 Hummer H2 6.2L
The Vortech Superchargers Supercharging System (PN 4GL218-338L) is a complete, fully engineered forced-induction solution for the 2008 Hummer H2 equipped with the 6.2L V8. Finished in a show-quality polished configuration, this system pairs Vortech's advanced V-3 Si-Trim centrifugal supercharger with a high-capacity air-to-water Charge Cooler to deliver substantial horsepower and torque gains while maintaining reliability and drivability.
This is a true complete supercharging system, designed to integrate cleanly into the H2 engine bay with OEM-style fitment and hardware. The included charge cooling system lowers inlet air temperatures under boost, allowing for more consistent power delivery and improved detonation resistance compared to non-cooled setups.
V-3 Si-Trim Supercharger Technology
The V-3 Si-Trim represents Vortech's most advanced self-contained centrifugal supercharger design. The "Si" designation indicates improved efficiency, achieved through a patented oil control system and a next-generation compressor stage developed in Vortech's in-house supercharger test cell.
With high adiabatic efficiency and reduced parasitic loss, the V-3 Si-Trim generates less heat while producing more usable airflow, translating directly into increased power and long-term durability. The self-contained lubrication system simplifies installation by eliminating the need for external oil feed and drain lines.
Performance Expectations
On the 6.2L Hummer H2 platform, this system delivers a significant increase in both horsepower and torque over stock output. With proper calibration and the supplied charge cooling system, users can expect strong gains across the entire rpm range while retaining smooth throttle response.
This system is engineered as a balanced package, focusing on usable power and reliability rather than extreme, race-only output.
Complete System Configuration
This Vortech system is supplied as a matched, bolt-on package engineered specifically for the 2008 Hummer H2 6.2L. All major components are designed to work together to ensure consistent boost control, safe air-fuel ratios, and repeatable performance.
Included Components & Features
- V-3 Si-Trim centrifugal supercharger (self-contained lubrication)
- Air-to-water Charge Cooler system with heat exchanger, pump, and plumbing
- High-flow fuel injectors
- Handheld ECU programmer with Vortech calibration
- OEM-style cast aluminum supercharger mounting brackets
- High-flow bypass valve for surge-free compressor operation
- Molded inlet ducting for clean fitment
- Heat-resistant silicone couplers and premium stainless steel clamps
- All required belts, fasteners, and installation hardware
Installation Notes
- Professional installation recommended
- Designed as a bolt-on system for the factory 6.2L engine
- Charge cooler system requires proper bleeding and setup during installation
Quick Specs
- Manufacturer: Vortech Superchargers
- Part Number: 4GL218-338L
- Application: 2008 Hummer H2 6.2L
- System Type: Complete Supercharging System
- Supercharger: V-3 Si-Trim
- Lubrication: Self-Contained
- Charge Cooler: Air-to-Water
- Finish: Polished
Emissions & Legal Notice
- NOT AVAILABLE OR LEGAL FOR SALE IN CALIFORNIA
- For off-road and competition use only
- Installation on emissions-controlled vehicles driven on public roads may violate U.S. federal emissions law
Fitment
- 2008 Hummer H2 6.2L
Why Buy from Beefcake Racing?
Beefcake Racing is an authorized Vortech Superchargers dealer with extensive experience supporting GM truck and SUV supercharger systems. We help ensure correct system selection, proper supporting modifications, and long-term reliability from purchase through installation.
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
