Call Us: 815.200.1033


About Us

Teamwork Is Our Strategy To Constantly Improve


Auto-Modification was founded by Bernard Kosierb and recently has become a licensed corporation in 2011. Bernard has gained his experience by being exposed in various areas of the automotive industry.His knowledge and true understanding stems from his curiosity with motors since he was child and as a result he has gained a deep and personal understanding in how motors and various other technical and mechanical components work. Being exposed to technical and mechanical components at such a young age only began to pave the way for his extensive skill base in the garage. One of Bernard’s first jobs was working at Good Year VIP, this is where he learned basic skills such as great customer service and basic/preventative maintenance.He then moved on to work for Signature flight support, where he worked as fuel system analyst. Working here exposed him to different forms of technical system. While working at the airport he found himself advancing to work for ATA as a aircraft technician. As a aircraft technician he acquired many certifications and a deeper understanding in electrical and hydraulic systems.


After his career in the aviation industry came to a halt due to newly revised regulations in the aviation industry due to the terrorist attacks of 9/11, Bernard turned his hobby of working with cars into his career. His further evolving talent of performing quality work was spotted and was offered a position with Bentley Crew and Bugatti Veyron as automotive technician. After working here he moved on to work for Mazda research and development Racing it is here where he learned how to develop vehicle components and learned how to fabricate.Because of the vast exposure Bernard has had on high end cars his experiences has instilled a quality standard for Auto-Modifications no matter what make, model or year we may be working on. All vehicles are treated with the same quality standard a high end vehicle would receive.


Throughout Bernard’s extensive work  has not only collected a vast amount of knowledge through his experiences in all the different technical fields but he has also collected a team of individuals that specialize in different fields. Here at Auto-Modifications we pride our self’s in providing quality work. Our quality work is our way of advertisement as a result of this a great amount of our work comes through referral.

We Offer A Variety Of Services
  • Oil change, lube and filter
  • Tire rotation
  • Brake and transmission fluid replacement
  • Clean fuel injector
  • Air filter inspection and replacement
  • Transmission inspection
  • Radiator inspection and service
  • Fan and belt inspection and replacement
  • Vehicle Inspection
  • Tune-Ups
  • Air Conditioning service
  • Battery inspection
  • Factory scheduled maintenance

More Services


Our Team

Bernard Kosierb
CEO / Chief Technician 

Katinka Halyan
Administrative  Assistant / Boss Lady

Pete Kwak

Peter Zarnowski




Contact Details

Company Location
Auto Modifications Inc.
13959 West Illinois Highway Suite 5
New Lenox, Illinois 60451 USA

How to Contact Us
Phone: 815.200.1033

Office Hours
Monday-Saturday: 7:00AM-10:00PM
Sunday: Appointment Only

© 2005-2012 Auto Modifications Inc. All Rights Reserved.



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