Looks like yours has the catalytic converters in the engine compartment.

I think only two years had that setup: '75 and '76.

It proved to be a problem due to too much heat in the engine book, cooking hoses and wiring.

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Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".