I know this has been covered before, but I'm not having luck with search (having a hard finding right terms to narrow it down), and searching on Google has twice led me to one of those "trap" spam pages you can't escape ... so ... is there or is there not a difference between the left and right mount on the 87 300D? I got them from the dealer, who said they thought there was no difference ... the mounts have identical part #s and look identical outside. However, each has a yellow line and an F written on the bell, one with the F in the middle of the line and one with the line slightly around the bell from the F. Same on the old ones that came out. I noticed as I was doing the second mount that the line/F on the old ones were opposite to how I put the new ones in. Also on the old ones, there is a "34" on the rubber of one and a "35" on the rubber of another. I haven't fastened them back up, so if they're backwards, I'd like to know and swap them. I was fairly certain I'd read they were the same, and the PN suggests that, but the markings had me wondering if I was mistaken.

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1987 300D, arctic white/palomino--314,000 miles
1978 240D 4-speed, Euro Delivery, light ivory/bamboo--370,000 miles
2005 Jeep Liberty CRD Limited, light khaki/slate--140,000 miles
2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--19,000 miles
1982 Peugeot 505 diesel, 4-speed manual, blue/blue, 130,000 miles
1995 S320, black/parchment--34,000 miles (Dad's car)

I can confirm it's the same part number left and right.

Sixto
87 300D

Seems to me the right one has a heat shield because of the exhaust. However, I can't remember whether the heat shield was a separate part, whether I re-used the old one or bought a new one. Come to think, my mechanic replaced the mounts on the '87, that's why I don't remember. (I replaced the '96 E300D mounts, which are sufficiently similar that they cause confusion in my mind.)

Jeremy


Jeremy

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970

Jeremy, it does have a heat shield on the passenger side, but it is a separate piece held down by the bolt. I just re-used it.
Here's a pic of the different marks on the mounts. Both the old set and new set had one mount with the left pattern, one with the right, exactly. Maybe just a coincidence and the marks are there for inventory purposes or something.

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1987 300D, arctic white/palomino--314,000 miles
1978 240D 4-speed, Euro Delivery, light ivory/bamboo--370,000 miles
2005 Jeep Liberty CRD Limited, light khaki/slate--140,000 miles
2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--19,000 miles
1982 Peugeot 505 diesel, 4-speed manual, blue/blue, 130,000 miles
1995 S320, black/parchment--34,000 miles (Dad's car)