AutoMeter 52mm Ultra-Lite Oil Temperature Gauge, 140-340°F, Mechanical (4346) M&H 5mm bore and in various

5mm bore and in various thickness options

cross-linked polyethylene (XLPE) for durability

equals more power

We are not quite sure what the difference is

AutoMeter 52mm Ultra-Lite Oil Temperature Gauge, 140-340°F, Mechanical (4346) M&H 5mm bore and in variousAutoMeter 2 1 16" mechanical oil temperature gauge with 140 340F range, incandescent lighting, and bourdon tube meter movement for accurate engine oil temperature monitoring. Features: 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 with every street or race