Chevrolet K20 Automatic Transmission Parts
This page brings together automatic transmission parts for the Chevrolet K20, covering model years 1975–1986. The range includes vacuum modulators, extension housings, and shift lever assemblies — from stock-replacement pieces to performance-oriented kits. Pick your Chevrolet K20's year above to narrow the list to automatic transmission parts with confirmed fitment. Every part shown is checked against our vehicle data.
What's here for your Chevrolet K20
- Automatic Transmission Vacuum Modulators — components that regulate shift behavior based on engine load
- Automatic Transmission Extension Housings — rear sections of the transmission case that house the output shaft
- Automatic Transmission Shift Lever Assemblies — mechanical linkage parts used to select drive ranges
The widest selection of Chevrolet K20 automatic transmission parts here comes from ATP, Standard Motor Products, Speedmaster, and B&M, spanning everything from direct-fit replacement pieces to performance kits. Other categories Chevrolet K20 owners shop for: Chevrolet K20 Body Frame Parts, Chevrolet K20 Springs and Suspension Parts and Chevrolet K20 Steering Gear and Parts, or browse all Chevrolet K20 parts and accessories.