Yep, that's an -18. It looks very similar to a -17 and -20, as it still has the open cavity between #1 and the chain case.
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Chris
'04 ML500 - 53k, Inspiration Edition, Desert Silver
'11 Audi A4 Avant - Brilliant Black
'87 300SDL sold
'99 C280 Sport sold
'85 190E 2.3 sold
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