ProCharger High Output Intercooled Supercharger System w/ D-1 (1GB212-D1) - 1985-1991 Corvette C4 L98
The ProCharger High Output Intercooled Supercharger System with D-1 head unit is engineered for 1985-1991 Corvette C4 L98 TPI applications, delivering 55 to 75 percent or more horsepower gains on 93 octane. Designed for enthusiasts seeking more airflow and performance than entry-level systems, this complete bolt-on kit offers strong, reliable power while maintaining excellent drivability.
With upgraded airflow capability and proven ProCharger engineering, this system provides consistent boost, cooler intake temperatures, and dependable real-world performance.
D-1 Supercharger
At the core of the system is the D-1 centrifugal supercharger, offering increased airflow and improved top-end performance compared to smaller head units.
- Approximately 7 psi boost level
- Improved airflow for higher horsepower potential
- Efficient centrifugal compressor design
- Smooth, linear power delivery
Air-to-Air Intercooling System
This system features year-specific intercooling to maintain optimal intake temperatures and consistent performance.
- 1985-1989 models use a 2-core air-to-air intercooler
- 1990-1991 models use a twin intercooler system
- Reduces intake air temperatures under boost
- Improves detonation resistance and reliability
Factory 6-Rib Drive System
The system utilizes the factory accessory belt drive for straightforward installation and dependable operation.
- Uses factory belt routing
- Simplifies installation and maintenance
- Ideal for street and moderate performance builds
- Upgradeable for higher horsepower applications
Complete System with Fueling Support
This High Output system includes fuel system components and all necessary hardware, making it a true turnkey solution.
- Fuel system components included
- All tubing and installation hardware provided
- Bolt-on installation with no permanent modifications
- Fully reversible setup
Engineered for TPI L98 Performance
ProCharger systems are known for OEM-quality fitment and long-term durability. This system is specifically designed for Tuned Port Injection applications to ensure proper integration and reliable results.
- Designed specifically for L98 TPI Corvette applications
- Optimized mounting location helps reduce heat
- Consistent and repeatable performance
Features
- D-1 ProCharger centrifugal supercharger
- High Output intercooled supercharger system
- 2-core or twin air-to-air intercooler depending on model year
- Factory 6-rib belt drive system
- Bosch blow-off valve included
- Fuel system components included
- Satin finish supercharger and brackets
- All tubing and installation hardware included
- Made in the USA
Additional Notes
- Intercooler configuration varies by model year
- Professional installation recommended
Fitment
- 1985 Chevrolet Corvette C4 L98
- 1986 Chevrolet Corvette C4 L98
- 1987 Chevrolet Corvette C4 L98
- 1988 Chevrolet Corvette C4 L98
- 1989 Chevrolet Corvette C4 L98
- 1990 Chevrolet Corvette C4 L98
- 1991 Chevrolet Corvette C4 L98
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
