The MG309+ is a 12V 100A alternator listed for Volvo Penta machinery, supplied new under the +Line Original range.
Manufactured by Mahle, this unit is available as a direct replacement where the part number matches the unit being removed.
The same base unit is also listed as MG309 in the +Line Original range under a separate variant — confirm the correct listing by matching the number stamped on the unit being replaced.
A confirmed part-number match is backed by our Fit Guarantee.
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