Online Tools

With 24×7 availability, our online tools help you get the job done quickly and efficiently, at a time and place that’s right for you.

Caterpillar Online Tools

Register Now
for access to the Caterpillar PartStore.

Caterpillar PartStore
Online parts ordering for MacAllister Power Systems customers.

Electric Power Wizard
Create a spec sheet for a Caterpillar generator set that fits your needs.
(Note that popups from catmms.com must be allowed)

Industrial Engine Wizard
Create a spec sheet for a Caterpillar industrial engine that fits your needs.
(Note that popups from catmms.com must be allowed)

Marine Engine Wizard
Create a spec sheet for a Caterpillar marine engine that fits your needs.
(Note that popups from catmms.com must be allowed)

Caterpillar Software Applications

Electric Power SpecSizer
Caterpillar’s free Electric Power SpecSizer application can help you specify a properly sized generator set to best meet your power needs. An advanced specification tool, SpecSizer will consider factors such as site conditions, load characteristics and required performance, and will provide accurate and timely technical data, robust load models and optimized algorithms.