Don't try and find a cheap one, you need a genuine Bosch one or it won't run right. Try taking the old MAF element out of its housing, and Google search for the part number you find on it. You may find the same MAF sensor element fitted into a cheaper unit. For example, the 98-00 156 2.5 V6 MAF element is the same as found in a Vauxhall Corsa diesel.. Much cheaper buying from Vauxhall than Alfa.
Whatever you do, don't buy a cheap pattern part. It MUST be genuine Bosch, or it won't run right.
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