200-4R Transmission Torque Converter Lock-Up Kit With Vacuum Switch For THM200-R4 Overdrive - Easy Install, Works With Carb Or EFI Engines, No Expensive ECU Needed

GM THM200-R4 Lock-Up Kit - Single Kit, Vacuum Switch
✔️ Includes vacuum switch, 4th gear switch, brake switch, solenoid

This torque converter lock-up kit is designed for the THM200-R4 overdrive transmission. It lets you control the lock-up without a separate ECU, and works with carbureted and EFI engines. It fits GM THM200-R4 transmissions and includes all needed components for a straightforward install.

✅ Vacuum switch controls the lock-up solenoid for precise engagement
✅ 4th gear pressure switch signals the right timing for lock-up
✅ Brake switch, wire harness, pan gasket, and mounting hardware included
✅ Compatible with carb or EFI engines and GM THM200-R4 transmissions

💡 What is a torque converter lock-up kit and why is it handy?

It simplifies control of lock-up and helps avoid ECU-heavy setups on many transmissions.

- It uses vacuum and gear signals to engage the lock-up solenoid - It improves highway efficiency by locking the converter at cruising speeds - It works with carb or EFI engines and GM THM200-R4 transmissions✝️