Diaco Machinery Inc.
OEM Matching Quality
Our dedicated team of engineers tirelessly develops and tests premium aftermarket spare parts that perform every bit as well as OEM components. Working alongside our global manufacturing partners, we bring top-tier solutions to heavy and earth-moving machinery across North America.
Contact usFeatured Parts
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Our Parts Categories

Engine Overhaul Parts
Get your heavy machinery back to peak performance with our OEM-tested engine overhaul parts. Backed by years of expertise, we provide quality you can trust and quick turnaround to minimize downtime.

Undercarriage
Keep your machinery moving with our durable undercarriage components. Built to OEM standards, these parts provide superior performance and reliability for all your heavy-duty needs.

Transmission Overhaul Parts
Maximize efficiency and reliability with our premium, OEM-tested transmission overhaul parts. Restore your heavy machinery’s peak performance and minimize downtime with components you can trust.

Electrical Components
Ensure precise monitoring and reliable performance with our OEM-tested sensors and electrical components. Keep your heavy machinery running at its best with minimal downtime.

Wholesale
We deliver top-tier aftermarket spare parts for heavy machinery, backed by our expert design and manufacturing team. With a robust inventory and a commitment to exceptional quality, we proudly offer wholesale opportunities worldwide. Contact us today to explore a partnership that keeps your market moving forward.
We provide premium aftermarket spare parts for heavy machinery—available for individual orders with no minimum quantity required. Thanks to our diverse, in-stock inventory and quick turnaround, we can ship your part within 24 hours to keep your operations running smoothly. Trust Diaco for efficiency and reliability you can count on.
Overnight Shipping
Vendor Managed Inventory
At Diaco Machinery Inc., we provide Vendor-Managed Inventory (VMI) solutions for earth-moving equipment—monitoring and replenishing your spare parts so you’re always stocked. This reduces downtime, streamlines costs, and keeps your fleet at peak performance.

We are improving everyday ...
For over three decades, we’ve delivered premium aftermarket spare parts for heavy machinery, partnering with international suppliers to ensure top-notch, OEM-standard quality. Each component is rigorously tested and backed by our peace-of-mind warranty. We continually develop new aftermarket solutions for emerging engines, keeping your task-critical operations running smoothly.
+40k
Spare Parts
30
Years of Service
+100
Running Projects