12-Inch Billet Aluminum Seat Base Adapter

Want to replace your OEM seat with an aftermarket seat? Need more leg room? This seat base adapter lets aftermarket seats adapt to the existing OEM drill pattern in the floor—no additional drilling required. The seat base adapter also allows up to 7-1/2" of adjustment in 1" increments, providing extra leg room for tall drivers. It adapts to nearly every aftermarket seat. Billet aluminum construction. Stainless steel hardware included. 

12" wide and designed to fit Peterbilt 579 models with Sears Atlas.