Mercruiser 8 Cylinder Engine Gaskets 7.4L 454 V8: 420 hp Gen IV & V, hp425 (385, 400, 425 hp Gen IV & V), hp 525 SC (500 hp Gen V), 7.4L Blue Water Inboard hasta / up to Ser. no. D715493 (310, 340 hp Gen IV), 7.4L Blue Water Inboard desde / from Ser. no.

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