Caterpillar 5T-8645 Vent Kit

The Caterpillar 5T-8645 Vent Kit is an OEM fuel-tank vent assembly for underground articulated trucks. In Cat’s official parts catalog it is listed as 5T-8645: VENT KIT and described as a Fuel Tank Vent Kit, intended to provide the venting function required by the fuel system on eligible equipment. The kit targets underground articulated trucks and lists compatible models AE40, AD45B, AD55B, AD55, AD30, AD45, and AD40, offering a direct replacement option for maintenance or repair of the fuel-venting pathway on those machines. This Cat vent kit is part of Caterpillar’s line of parts for underground trucks, aligning with the design and specifications of the listed models. For confirmation of fit and installation details, consult Caterpillar’s parts documentation for 5T-8645 and the associated underground truck models.