Shop for aftermarket Diesel Fuel Tanks for your Peterbilt 379. Experience the benefits of an aftermarket fuel tank by matching traditional OEM quality while being cost-effective. Fuel up your big rig with exceptional quality and performance. From center-fill to rear-fill options, this comprehensive product line offers a wide selection of heavy-duty diesel fuel tanks designed for the popular Peterbilt 379 model. With capacities ranging from 100 to 150 gallons, these tanks provide the fuel storage you need for long hauls.