CATERPILLAR 3512 For SALE Caterpillar 3512 Engines Discounted By National Power Supply National Power Supply Now expands full inventory on Cat 3512 (Caterpillar 3512) engines for great deals. The Cat 3512 engines offered by National Power Supply are expanding their global inventory for customers worldwide. More inventory to ship immediately means With Cat 3512’s on hand, it means our customers can get better deals, quicker shipping and the products they want” Darrin Von Danikken – National Power Supply Over the next few months National Power Supply will be expanding into new markets beating OEM’s by up to 40%. National Power Supply currently sell remanufactured diesel engines and generators.