Beefed Up Adjustable Vacuum Modulator Valve For GM TH350 And TH400 Transmissions, TCI 350001, Fits Automatic Transmissions, High Performance Modulator For Smooth Shifts And Reliable Vacuum Regulation

Adjustable vacuum modulator for GM TH350/TH400 shifts
✔️ Single unit fits GM TH350/TH400 auto trans, easy install

Designed for GM TH350 and TH400 automatics, this adjustable vacuum modulator valve delivers precise vacuum control to smooth shifting and improve reliability. It's a handy upgrade for restorations and performance builds that require consistent shift quality across engine loads.

✅ Fitment: GM TH350/TH400 automatic transmissions
✅ Type: adjustable vacuum modulator valve for precise shift control
✅ Function: regulates engine vacuum to maintain smooth shifts
✅ Pack size: 1 unit
✅ Application: ideal for performance and restoration projects

💡 What is a vacuum modulator valve used for in automatic transmissions?

It uses engine vacuum to regulate hydraulic pressure that controls shifting characteristics.

• Handy for restoring original shift feel in GM builds
• Helps prevent harsh or delayed shifts under load
• Works with factory vacuum lines and common performance mods
• Adjustable to tailor shifts for street or track use