Lifetime Premium Member
Date registered: Dec 2011
Vehicle: 1991 560 SEC 1994 E500 2014 E350 Cab
Location: Houston, TX
Mentioned: 3 Post(s)
Quoted: 436 Post(s)
Most of the cups, seats and O rings are all put in at the same time. If it were me, I would change all of them out of an abundance of caution. I am not spending your money, just telling you what I would do. Once you seat them, start the car and get the temp up good an hot to operating temps, then wrap them again to be sure they are fully seated as the temp change can loosen them when you once popped them back on a cold engine.
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1991 560SEC 199 /268, 17" RS90'S, Eibach springs, Bilstein HD shocks, Custom rear sway bar, Euro Headlights, Custom ceramic coated headers and down pipes with stainless dual exhaust, W140 glass sunroof, dog ear trunk spoiler, OEM Skid Plate, Euro bumpers, wood refinish and restored.