Proflow billet aluminium filler necks allow you to fill and install a coolant cap where the thermostat housing would usually be located on a SB or BB Chevrolet.

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Proflow Inlet Fittings, Aluminium, 1.250 in. Hose to 1 3/16 in. Straight Cut Male, Black Anodised

Proflow Inlet Fittings, Aluminium, 1.250 in. Hose to 1 3/16 in. Straight Cut Male, Black Anodised

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