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Fitted to gimbal bolt head on 120 to 898
Mercruiser, also Alpha 1 until 1989
Order code . . . . . . M55989
Dia. 31mm. Thread 1/2" UNC (13 tpi.)
Wt.110g in Zinc . . . Price £6.12

Aluminium version . M55989A
Wt.43g . . . . . . . . . Price £5.40
Magnesium version M55989M
Wt. 30g. . . . . . . . . Price £14.39