About Us

Sunnen Products Company has been a global leader in the manufacturing and distribution of bore sizing and finishing equipment, engine rebuilding equipment, and tooling and abrasives since 1924.

Aerial View of Sunnen Headquarters in St. Louis, MO, USA

Mission Statement
To deliver solutions that improve the performance of our customers. Better products make a better world.

Our Values
  • We insist on a level of excellence in product and service that exceeds customer expectations.
  • We respect and care for our people, their families, their ideas and contributions.
  • We exhibit corporate and social responsibility to the communities in which we operate.
  • We exhibit ethical, moral and trustful conduct at all times and in all relationships.
  • We put success of our company before any employee or department.
  • We believe innovation is a way of life.
  • We solve problems - we don't place blame.
  • We honor our commitments
  • We encourage initiative and insist on accountability.
  • We listen to learn what customers, employees and stakeholders need and expect.
  • We persist.
Our Vision

 Sunnen Products Company  is committed to providing a broad offering of catalog products and custom engineered solutions in a way that exceeds the expectations of our customers.

Our vision for Sunnen is as follows:

  • We will be the global leader in honing technology and innovation -- the company that customers think about first for optimized solutions to their honing applications.
  • We will be the quality leader in our industry, offering premium products that provide our customers with high value-added solutions.
  • We will be a trusted and reliable partner for our customers -- available when they contact us, responsive when they have questions and at their side when they need us; we will provide superior service and support to our customers.



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