Our Vision is Precision

For over 100 years, Sunnen has built a global business around delivering the highest levels of precision to our customers. Combining a robust distribution network with industry-leading technology, Sunnen integrates bore creation, sizing and finishing into one turnkey solution. Together, we’ll achieve extraordinary results.

Read Our Story

Sunnen Spotlight 


Celebrating a Century of Innovation

2024 marks a significant milestone for Sunnen — a century of innovation. Over the decades, Sunnen dedicated itself to precision, performance and partnership. Our commitment to these three tenets has allowed us to continually reach new heights in manufacturing. Before we turn our attention to the future, our team wants to reflect on how far our organization has come.

Read More

Above and Beyond Honing

We’re not just honing parts anymore—we’re honing processes. Our global service team works one-on-one with our customers to refine their operations, engineer custom solutions and deliver the hands-on training they need to be their best.

View Service Options

Latest Insights

Hendrick Motorsports 2024

Hendrick Motorsports Partnership with Sunnen


Sunnen Equipment Highlights – PRI 2023

Forest City Gear Case Study

Forest City Gear Case Study