Why Koller Craft, LLC

Koller Craft, LLC, A Koller Enterprises Company, is a family owned and operated full service provider of injection molded plastic components. Since 1941, we have focused on providing our customers with the highest levels of service and quality. Manufacturing the product to the proper specification is merely the beginning. On time shipping, friendly customer service, quick problem resolution, and a commitment from our entire team to your success, are what you will experience when dealing with us. We invite you to review our entire website, and learn why Koller Craft, LLC is the choice for your future success


The experience and knowledge to satisfy your engineering needs, from design and development to managing your mold build, to production engineering. Our team will use the years of hands-on engineering and production know-how to make your project a success at the lowest possible cost. We use Solid Works 3D® and Mold Flow® software as tools to design and analyze your molded part.
- Design & Development
- Mold Building
- Production Engineering


Quality has been a founding principal of Koller Craft and remains a primary focus today. We are committed to having a world class quality system. We received our ISO 9001:2015 certification in April 2003. We are continually evaluating our quality system to maintain our "edge." As a Total Quality system, we employ many of the modern quality techniques and procedures that influence all aspects of our business.


Customer Service remains the cornerstone of our commitment to you, the Customer. Every Koller Craft employee under stands the importance of "Customer Satisfaction." Very simply put, we believe the customer should receive what was ordered, and it should be delivered when you want it. On-time delivery and customer reject PPM are two of the metrics we use to measure our performance. We pride ourselves in having active, open communications with our customers. For this Koller Craft has won many awards from our customers for our exceptional performance.

For over seventy-five years the Koller team has focused on delivering quality and service. The ‘Craft’ portion of our name was selected by our founder, AJ Koller, to represent the pride and craftsmanship we feel for our work. Founded in 1941, Koller Craft, LLC is one of the oldest plastic molders in the Midwest. We successfully transitioned from thermoset molding to thermoplastics in the 60’s and 70’s and today.  As a member of Koller Enterprises we ship parts around the world.  We know it is not enough to do our best – we must do what is necessary to succeed.  We believe our commitment to quality is the most important reason to choose Koller Craft, LLC as your supplier of quality injection molded parts.

Koller Enterprises Companies


Koller Craft, LLC has an experienced management team that will direct the resources necessary for successful program launch. We will manage your program from beginning to end; from conception to launch, into mass production.

Insert/Over Molding

Gas Assist

We Mold Quality and Customer Satisfaction Into Every Part

Markets Served

Our Focus on Industry: As a leading precision molder, Koller Craft, LLC provides world-class service to a variety of diverse markets. Many of Koller Craft, LLC's customers are world-class market leaders, demanding the best out of their suppliers.


A wide variety of automotive component parts including lighting, under-hood/fuel system, interior, and electrical. Koller Craft, LLC is a pioneer in the industry in that it has been supplying OEM parts to the automotive industry for over 60 years. The many challenges involved in keeping automotive production lines running, error free, has served as a driving force for our engineering and production systems to achieve top efficiencies and quality.



Koller Craft, LLC has contract molded a wide range of injection molded components for the packaging industry. These range from high volume, close tolerance containers and lids for high speed food packaging fill lines, to very large collapsible totes used as returnable packaging. Our central location gives our customer the advantage of saving on freight and timing. We are experienced in working with FDA and NSF requirements.

General Industrial

General Industrial

We produce specific parts and assemblies for the general industrial market. Koller Craft, LLC offers "start-to-finish" capabilities; from initial part design and development, to prototyping and mold building, and finally to injection molding and assembly, if required. We understand the importance of keeping costs down and hitting a product launch date. As a privately owned entity, we have the inherent advantage of being able to make quick decisions as required.

Get in Touch

Koller Craft, LLC is centrally located in Fenton, MO which is a suburb of St.Louis.

Find us at the office

1400 S. Old Highway 141 Fenton, MO 63026

Send Us a Note

Sales Inquiries: Pat Mahon

Account Manager: Kelly Balmer

Customer Service: Kelly Esswein

Give us a ring

For more information call 636-343-9220