Classic Tube Vacuum Modulator Hard Line TH400 A/T 7.4L Chevy/ GMC C/K 88-90
Highlights
- Your Choice of Steel Tubing
- Direct Replacement
- Made with CAD Technology
- Compliant with DOT Specs
Classic Tube Vacuum Modulator Hard Line for 1988-1990 7.4L Chevy and GMC C/Ks with a TH400 Automatic Transmission.
Swap your worn or damaged line with an accurate replacement by Classic Tube! Their vacuum modular hard line is crafted according to your 1988-1990 C/K’s specs. It’s done by using CAD technology, ensuring the most accurate fit possible. Plus, it’s quality controlled through every stage of production. Perfect for pickups equipped with both a 7.4L engine and TH400 automatic transmission.
Features and Benefits:
- Your choice of factory-style or stainless steel tubing
- Direct replacement for original lines
- Matches original specifications
- Engineered using the most advanced CAD technology available
- Guaranteed total quality control at all levels of production
- Compliant with DOT specifications
Vehicle Fitment:
- 1988-1990 7.4L Chevy/ GMC C/K
*MUST be equipped with a TH400 automatic transmission
California Residents: Proposition 65 Warning
Related Categories: C/K Drivetrain
Vehicle Fitment
This product will fit the following C/K years:
- 1988,
- 1989,
- 1990,













