Reverse Main shaft Gear
 and 
Rear Reverse Idler Gear with Shaft 

GM Muncie Aluminum 4 Speed
 M20 - M21 - M22 
 
 
 Specs   
  • 35 tooth mainshaft reverse gear
  • 17 tooth / 27 spline with bushing idler gear 

Item Contents   
  • Large reverse gear
  • Idler gear with shaft 

 
It is the buyer's responsibility to confirm compatibility & durability for their application before purchasing.