""You can identify if your 124 has a cabin dust filter by looking at the trim underneath the wiper arm. If there is a hard plastic U shaped ("smile" shaped) piece of trim, with about 5 small phillips head screws holding it down, you do NOT have the dust filter. If this area on the otherhand is a solid piece of rubber, which will pull up out of a channel, it has the dust filter. You can also try looking for the filter through the air intake screen for the climate control, but checking which style molding is under the wiper arm is even easier. ""

*Gilly quote.....