SG10B021, SG12B040, SG12B054. Fits Valeo Alternator The regulator is only compatible with the alternator codes listed below. Vauxhall Astra F 1.4, 1.6, 1.8, 2.0 1991-2001. Vauxhall Astra MK2 2.0 1991-1993.
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