Buy Caterpillar Parts Online

Buy Cat Parts Online Through

Visit Parts.Cat.Com Register Today Document Review

The Cat® Parts Store

Since 2016, the home for finding all Cat parts has been By choosing the Cat Parts Store for all your equipment replacement part or rebuilding needs, you can streamline your maintenance, repair and rebuild processes, whether you’re maintaining your machinery in-house or with our team of certified technicians at our five state-of-the-art shops.

Find Your Cat Parts

With more than 1.4 million Cat parts in-stock, as well as an inventory of certified reman and refurbished components, the Caterpillar Parts Store is there for you. The H.O. Penn team is too, offering assistance when it comes to choosing and finding your replacement parts, as well as installing them on your equipment at our five state-of-the-art facilities in New York and Connecticut.

Contact Us

Video Tutorials




Expansive Inventory

When you arrive at the online Caterpillar® Parts Store, you’ll find an inventory of more than 1.4 million Cat parts, including the following:

  • Attachments
  • Cabs
  • Electronics
  • Filters
  • Fluids
  • Batteries
  • Belts
  • And more

The online shop also offers its parts in several quality formats, including:

  • New
  • Cat Remanufactured
  • Cat Certified Rebuild
  • Cat Classic
  • Cat Genuine

With a straightforward search feature, which lets you enter your serial or part number, you can find your equipment parts faster.

Real-Time Pricing and 24/7 Access

Whether you’re at your worksite or office space, you can access the Cat Parts Store 24-hours a day, seven days a week — even if you’re on your mobile or tablet device. With real-time pricing and availability, the Caterpillar Parts Store lets you make a move without delay when it comes to repairing your construction equipment to rebuilding your on-highway truck.

Convenient Payment and Order Options

The technology behind the safety, productivity and sustainability features of Cat machinery may be complex, but ordering and paying for that equipment’s parts is far from it. When you’re ready to purchase, you can use your company credit card. For faster ordering, you can register and create an account for free, accessing your payment and shipping information, as well as order updates, in one place.

Fast Checkout and Shipping

With your customer account, you can shop and checkout fast at the Cat Parts Store. Shipping is also simple, letting you choose between picking the product up from one of our six locations across New York and Connecticut or having our team package and ship the product to your preferred address. After you’ve paid and confirmed your order, you’ll receive an email confirmation, keeping you in the loop on your order’s progress.

Comprehensive Warranty

All parts, whether new, used or remanufactured come with a six-month warranty to emphasize the quality behind Caterpillar. If our team or yours discover an error with any replacement part, we’ll ensure it’s replaced. Returns for all other parts, whether for construction equipment, on-highway trucks or marine power generators, require review of our 30-day return policy.



Cat Equipment is surprisingly affordable for any budget!

H.O. Penn is here for your equipment needs!  Find a Location or Contact Us today for a free Quote!