Join Date: Apr 2013
Vehicle: 1999 SLK 5.4 M113 V8 6-speed Manual
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You'll just have to run them up individually and if they bottom out, then try a shorter one. based on a few pictures I have of one of these engines removed, it appears all the side bolts are the same length, and the longer ones go in the front (timing cover) and most likely the back near the flywheel.