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Registered
1990 300SEL, 2005 SL500
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168 Posts
Discussion Starter #1
There is no mention of the size in the printed manual. Various replacement catalogs call for 21” for both driver and passenger side blades. Well, that is how it looks on the car. Definitely too big, isn’t it?

2627035


Do I need to get 20” or should I go even lower?
 

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Registered
1989 W124 260E
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1,704 Posts
i will check for you i find 3 sizes for your car going on the year 20 inch 22 inch 16 inch .And the problem is some blades fitted to your 300SEL is that both blades are not the same length ,, on some models - -One being longer than the other and ,some are for lefthand cars and some for right hand . You need a fellow member to check the blades on their cars to be exact .
 

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SuperModerator
1986/1990 W126
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14,158 Posts
Yeah I use a shorter one on the passenger side. I think 19 or something like that. Or it contacts the trim a little.
 

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Moderator
1991 500SEC 55K mi. 1987 560SEC Now 153K mi. 2020
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4,532 Posts
They are VERY close on my SEC as well. As plinker says, there are different blades for left & right fitment.. .. and they BOTH take the 22" insert.

000-824-25-27

Bosch has a two-pack of the correct blade inserts that really fit the MB originals.

BOSCH Windshield Wiper Blade Refill 550mm 22 3397033363
61+ZpYJCqIL._AC_SL1500_.jpg
 

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Moderator
1991 500SEC 55K mi. 1987 560SEC Now 153K mi. 2020
Joined
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4,532 Posts
I replaced mine on the 560 with factory, and in honesty, I could not tell the difference between the right & left wiper blades. Sure, the inserts are the very same for both sides, but what is THE difference between them?

On wiper arm mounting installation, I found it's really important to get that right. Too low, one blade hits the body, too high, they can be seen when in the park position.

I marked the parked blade position on the windscreen with a marker before removal to remove the plastic air guide panel below. Doing that was really helpful when re-installing the arms later in the day.

MBL

Screen Shot 2020-04-09 at 5.10.30 AM.png
 

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Moderator
1991 500SEC 55K mi. 1987 560SEC Now 153K mi. 2020
Joined
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4,532 Posts
This is exactly the problem. Passenger wiper must have been replaced before with an incorrect one and now the fitment is off.
On my SECs, it is a very VERY close fit. I did have one blade just catching on the bodywork on one of the cars just last year..

With your situation, I wonder if the blades got swapped L to right at some point?

The kicker in all this is there is absolutely NO marking on either wiper blade metal 'frame' to delineate one from the other... Well, I have not seen one yet anyways. They look identical to me..

Stay safe man.

M
 

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Outstanding Contributor
1989 560SEC, 1989 560SEL, 1995 E420
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4,507 Posts
I replaced mine on the 560 with factory, and in honesty, I could not tell the difference between the right & left wiper blades. Sure, the inserts are the very same for both sides, but what is THE difference between them?

On wiper arm mounting installation, I found it's really important to get that right. Too low, one blade hits the body, too high, they can be seen when in the park position.

I marked the parked blade position on the windscreen with a marker before removal to remove the plastic air guide panel below. Doing that was really helpful when re-installing the arms later in the day.

MBL

View attachment 2627305
MBL, Are you aware the blades can be adjusted to be closer or farther away from each other? There's a screw with locknut under that rubber grommet near the center of the cowl. Easier to do with the cowl removed and I love your idea of marking the position of the blades on the windshield.
 
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