I fixed my loose bumper strip May 2013 using a different method and it is doing just fine. I simply screwed the plastic strip to the bumper with sheet metal screws so it cannot flop or come loose from the bumper. No parts to buy or make. 
Loose rubber strip on rear bumper 85 300D
 
			
				
			
		 
		
		
		
			
		
		
		
		
		
			
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				85 300D turbo pristine w 157k when purchased 167,870 July 2025 
83 300 D turbo  297K runs great. SOLD! 
83 240D 4 spd manual- parted out then junked
			 
		
		
		
		
		
	
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