Buick GS TH400 Transmission Parts

Get an exact fit for your

Buick GS

Choose Year
Buick
GS

283 products

Clear All

Fitment

Buick GS

Category

Transmission

Transmission Family

TH400

Products

Related Articles

How to Identify GM Transmissions | 700R4, TH350, 4L60, TH400, 4L80e, Powerglide, & More

How to Identify GM Transmissions | 700R4, TH350, 4L60, TH400, 4L80e, Powerglide, & More

Read More

This resource contains a transmission pan shape ID chart and other tips to help with identifying GM transmissions.

How to Install Side Detent Shifter for GM TH200, TH250, TH350, and TH400

How to Install Side Detent Shifter for GM TH200, TH250, TH350, and TH400

Read More

Learn how to install a side detent shifter in a 1969 Chevy C10.

How to Adapt LS Engine to 700R4 or Turbo 350 Transmissions

How to Adapt LS Engine to 700R4 or Turbo 350 Transmissions

Read More

We show you how to keep that old GM transmission when swapping in an LS engine. Our LS swap adapter kits make it easy!

Showing 1 - 36 of 283 results

Customer Impersonation Script