H.O. Penn in Holtsville is your go-to dealer for quality Caterpillar machinery, parts and service. Whether you’re looking for construction, on-highway, power generation or marine equipment, we can help you find exactly what you need. Our quality products can help you run your business smoothly, and our financing options can help you do so within the scope of your budget.

With more than 80 years of experience in the industry, H.O. Penn can help take your business to the next level. We understand the needs of our customers and strive to give you the tools you need to get the job done right. Come visit H.O. Penn in Holtsville today or give us a call to discover why we’re recognized as one of the leaders in the heavy equipment industry.

H.O. Penn in Holtsville is located at the intersection of Union and Middle avenues, just south of the intersection of Interstate 495 and Nicolls Road.


Sales: 631-654-4456 Rental: 631-654-4434 Parts: 631-758-7500 Service: 631-654-4412


Sales: 631-654-4409 Parts: 631-758-7500 Service: 631-654-4415


Sales: 631-654-4456 Rental: 845-437-4049 Parts: 631-758-7500 Service: 631-654-4419

Power Generation

Sales: 631-654-4494 Rental: 631-654-4494 Parts: 631-758-7500 Service: 718-409-8569 Emergency Service: 888-736-8228

Parts Counter Hours

7:30 AM - 5:00 PM