Have never known what this is.  
Looks factory installed to me.
It's only function (that I can tell) is to prevent me from curling or dumping the bucket when in the down position. I can still lift or lower the FEL arms.
	
		
			
		
		
	
		
			
		
		 
	
	
		
			
		
		
	
	
		
			
		
		
	
		
			
		
		 
	
	
		
			
		
		
	
								Looks factory installed to me.
It's only function (that I can tell) is to prevent me from curling or dumping the bucket when in the down position. I can still lift or lower the FEL arms.
 
				 
				
		 
 
		 
 
		 
 
		 
 
		 
 
		