1990-1993 C4 Air Intake Duct Power Coupler
Designed to replace the factory accordion duct, this C4 Corvette air intake duct power coupler eliminates the power-robbing airflow restrictions of the original design, allowing smooth, unobstructed air to flow directly into the throttle body. This coupler fits both L98 and LT1 engines and features a heavy-duty rubber construction with internal wire reinforcements for durability.
C4 Corvette Replacement Air Intake Duct Power Coupler Features:
- Fits 1990-1993 Corvettes
- Fits L98 & LT1 Engines
- Length: 14"
- Throttle Body End Dimensions: 2-1/2" x 4-1/2" Oval
- Air Filter Box End Dimensions: 2-1/2" x 8" Oval
- Improved Design Over Factory Style Accordion Duct
- Smooth Inner Design
- Unobstructed Air Flow to Throttle Body
- Improves Performance
- Heavy Duty Rubber Construction
- Internal Wire Reinforcements
- Clamps Included
- Instructions Included
- Replaces GM # 25099598
FITMENT NOTE: If the coupler fitment is too long, the throttle body end can be trimmed for better fitment. Due to the location of the IAT or MAT sensor, a small hole will need to be drilled for placement in the rubber duct. Use the factory duct as a template for location.
Also known under these part numbers: (For reference only)
- 25-158769-1
- 686420061892
- PM-722