AutoMeter 52mm Arctic White Water Temperature Gauge, 120-240°F, 6 Ft, Mechanical (1332) Cosworth you don't want excessive clearance

you don't want excessive clearance on the dowel/bore

This is a medium/large sized seat for those up to a 35" waist

If you are local and can pick the moulding up at STM

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AutoMeter 52mm Arctic White Water Temperature Gauge, 120-240°F, 6 Ft, Mechanical (1332) Cosworth you don't want excessive clearanceAutoMeter mechanical water temperature gauge with 2 1 16" dial, 120 240F range, 6 ft. capillary tube, incandescent lighting, and no electrical system required for operation. Features: Highly polished chrome bezel Traditional incandescent lighting illuminates around the perimeter of the dial AutoMeter's race proven mechanical instruments provide trusted accuracy while being simple to install No electrical system required for gauge operation compatible