These new check strap fits all 123 sedans and wagons from 1977 to 1985, including the 280E, 240D, 300D, and 300TD. It will not fit on 300CD or 280CE coupe models. This will fit the right and left sides and the front or rear door. If either of your doors is not staying open, creaking, or closing with difficulty, you need to replace the check strap before it breaks and damages your door. Now we included longer bolts than the original to make installation easier and blue thread locker to make sure they won't back out. Watch the You Tube video below for more details.
Product Details
Failure of the front door check strap is almost always caused by rainwater washing away the grease and drying out the ball mechanism, which eventually leads to failure, as you can see in the picture below. Being dirty for a long time does not help either. There is a little grease in this new strap, but we recommend adding a couple of good globes of synthetic grease before installation.
We also recommend wrapping the door check with a waterproof tape ( not duct or gorilla tape that deteriorates with age and exposure ). We use flexible 3M Hvac tape as you see below.
WARNING: READ CAREFULLY: Since Mercedes no longer makes rear door checks, we can only obtain aftermarket front door check straps and modify them for use in the rear door. In some years, these may not fit "perfectly". It has to do with the hole alignment for the attachment bolts (primarily on the door panel). You may have to take a round file and enlarge the hole slightly. This check strap also has two detents as opposed to one on the original. That can actually be an advantage. The check strap will work just fine. PLEASE DO NOT ORDER UNLESS YOU UNDERSTAND THIS.....
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1965 to 1991 Sedans and Wagons Plastic Door Liner Replacement Kit
If you own an older Mercedes sedan or wagon, it is a very good idea to remove all four door panels, repair components, clean drains, and, most importantly, lubricate all moving parts, as Kent explains in numerous YouTube videos.