The lens come off, held on by three or four plastic clips.

Sad thing is that the clips are in the same condition as the lens was -- poor. May break off when you lift them up.

The top ones are visible when you open the hood. Bottom ones require that you remove the turn signal indicator and the trim under the headlight assembly.

Usually $75 or so on eBay, more at the dealer. You will want to replace both, the other side will look strange with the new one in place.

Note that you can get DEPO Euro style headlights for about $270, about double the lens cost, and the lighting is VASTLY better.

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!