Wellington Parts Corp Transmission Vacuum Modulator Kit Adjustable Red Stripe Gm TH350 TH400 350 400 Exceeds Oem Specs 44160R / Turbo / 350 / 400 / 3L80 / TH-350 THM400 / Chevrolet / Chev / Performance Upgrade Includes New Hose As Shown / Turbo / TH350 / TH400