After Hours Emergency Service Available

Call our Toll-Free Line: 1-800-906-4235


715 South Outer Drive
Saginaw, MI 48601

Get Directions

43.4214, -83.896206

About our Location:

A member of the WheelTime Network, we pride ourselves on delivering exceptional customer service and professional work. Our mechanics are committed to getting the job done right and getting your car or truck back on the road.


715 South Outer Drive
Saginaw, MI 48601

Get Directions

43.4214, -83.896206


Monday - Friday
7:00 AM - 5:00 PM
Saturday & Sunday


On-Site Amenities

  • Driver's Lounge
  • HD Televisions
  • Free Coffee
  • Free Wi-Fi

Payment Forms Accepted

  • Mastercard
  • Visa
  • American Express
  • Money Orders

Get To Know Us:

We are located off Interstate 175 at Exit 149B. Turn right at the light and you will find us approximately one half of a mile down the road on the left. Our mechanics, friendly service advisors and staff are ready to address your vehicle and equipment needs in any of our 14 working bays. Ask about our express parts delivery for all makes and models, and our expertise in manual drive train and axle, brakes, steering and suspension. Your comfort matters to us – relax in our drivers lounge with free coffee and WiFi access. Consider it Done!


We proudly represent top industry manufacturers and brands, including:


I have always had good experiences with W.W. Williams. They are a top-notch service facility. 


W.W. Williams gets stuff back to us quickly and once they work on it, it’s done right the first time. Our sales representative is also a great help and comes around to see if we need anything. 

Trucking Company Detroit Diesel Truck Service

W.W. Williams is the only facility in our area that can handle the work on the Allison Transmission. They know what they are doing. 


I have used W.W. Williams services serveral times. I always feel like that are taking care of me and not taking advantage of me. They do a very good job.  


I go to W.W. Williams anytime I have a problem and they fix it. 

Tour Bus Company Bus Repair

I like W.W. Williams for their convenience, honesty, and efficiency.  

Logistics Coordinator WOLENSKI ENT

W.W. Williams was upfront and explained everything they were doing. 

Independent Truck Driver Detroit Diesel Truck Service

The W.W. Williams techs are very nice, personable, and get the job done. You can’t go wrong with that.  

City of Gladwin Generator Service

W.W. Williams does excellent work and are the go-to people for Detroit Diesel.  

Logistics Coordinator STEPHEN MILLER

The service at W.W. Williams is good and they service Allison Transmissions. 

Transportation Service Truck Parts

W.W. Williams is friendly and I take most of my business to them. 

Trucking Company Detroit Diesel Truck Service

W.W. Williams made the process easy and the correct parts came to me. 

Auto Repair Shop Truck Parts

The service at W.W. Williams is great. I get what I need and the price is good. 

Logging Contractor Truck Parts

W.W. Williams was very professional and responded right away. They were accurate with arriving and getting me taken care of. 

Owner/Operator Marine Craft Service

W.W. Williams was nice to me on the phone, they were pleasant, and tried to get me in as quickly as possible while I was in town. 

Excavating Contractor Truck Service

I have a lot of friends who have used W.W. Williams and they have all been very happy with the service and the way they were treated. I am happy with the way they treated me, too. They do good work and they are a straight up company. 

Owner/Operator Truck Service

W.W. Williams always follows up with me regarding the parts that were purchased. 

Local Marina Off-Highway Parts

W.W. Williams is customer oriented and follow up with you to make sure you are happy with everything. 

Chemical Shipping Company Truck Parts

We have used W.W. Williams for about four or five years. Their prices have been very good and the quality of service is great. 

Water Utility Company Generator Service

I would recommend W.W. Williams because they did a good job. This was a year-long service due to the vessel being struck by lightning. 

Marina and Campground Marine Craft Service

W.W. Williams is available whenever I try to get ahold of them. Every time they come out, they are incredibly knowledgeable and helpful. 

Local CSA Farm Off-Highway Service

Truck & Vehicle Repair & Service

We understand the priorities of today's drivers: uncompromised safety, maximum uptime, and honest service. Whether you drive a long-haul truck or a school bus, we've got what it takes to get you back on the road. Ask about our DPF cleaning services for all makes and models. At our Saginaw location, we offer the following services for trucks, trailers, commercial vehicles & equipment:

  • Diesel Engine & Transmission Service & Repair
  • Bumper to Bumper Service & Repair
  • Cab Climate Control Parts & Service
  • Preventative Maintenance
  • Onsite Diesel Particulate Filter Cleaning

Power Generator Service & Sales

W.W. Williams Saginaw is better than your average service center. We excel in service and sales assistance for exceptional power generation products from mtu. Does your on-site generator need service or repair? Are you looking to upgrade your continuous power solution? Consider It Done. Contact us today to talk over your individual needs.

  • Backup Generator Service & Repair
  • Backup Generator Sales
  • Continuous Power Generator Service & Repair
  • Continuous Power Generator Sales

Diesel Engine Repair, Service & Sales

W.W. Williams is widely known for the advanced skills of our diesel mechanics. We are partners with Detroit Diesel, mtu, Isuzu, and Yanmar - offering sales, parts, and service support. Our locations service all makes and models - if it's a diesel engine, our mechanics can fix it. Class 8 trucks, medium-duty trucks, vans, buses and RVs, even heavy construction equipment and marine engines - if you need diesel engine repair or service, Consider It Done.

  • Maintenance
  • Diagnostics
  • Repair
  • Engine Rebuilds
  • Engine Sales
  • Replacement Parts

Marine Engine Repair & Service

From work boats and tug boats to pleasure crafts and yachts, W. W. Williams Saginaw is fully equipped to handle all of you marine engine needs.

  • General Maintenance
  • Tune-Ups & Troubleshooting
  • Overhauls
  • Electronic Controls
  • Vessel Repowers
  • Service & Repair for All Makes & Models

Emergency Vehicle Repair & Service

We help emergency responders minimize vehicle and equipment downtime, control costs and get the to next alarm safely. Our EVT certified technicians stand ready to perform fire pump service and mobile fire pump testing. Whether you need a replacement part, engine repair, or 10,000 feet of hose—Consider it Done.

  • Bumper to Bumper Apparatus Service & Repair
  • Engine Service & Repair
  • Transmission Service & Repair
  • Emergency Equipment Service & Repair

Commercial Vehicle & Truck Parts

Rely on the experts at W.W. Williams for the parts you need to keep your trucks and commercial vehicles running. We are an authorized reseller for:

  • Allison Transmission
  • Detroit Diesel
  • Isuzu Diesel
  • Mercedes-Benz Engines
  • mtu
  • Northern Lights
  • Weller Transmission
  • Yanmar

Fleet Maintenance Management

From a single truck or trailer to a fleet of thousands, W.W. Williams Saginaw knows how to manage your fleet. Our turnkey solutions will improve fleet uptime, reduce risk, and help you control and manage costs.

  • Bumper to Bumper Service & Repair
  • Customized Fleet Maintenance Schedules
  • Fast Response Field Service Trucks
  • All-Makes Parts Inventory
  • Real-Time Repair Tracking Dashboard
  • National Service Network

Solutions for the Whole Truck & Trailer

Any make. Any model. Any year. Consider It Done.

WheelTime Promise

Get It Done Right, The First Time.

W.W. Williams is a member of the WheelTime Service Network, a network of service locations across the US and Canada dedicated to getting you back on the road in the shortest possible time.

The Wheeltime Promise
  • Initial assessment within two hours of arrival
  • Completed repairs in the fastest time possible
  • We will meet the cost estimate given
  • We will meet the time estimate given
  • We will notify you within 30 minutes after last labor
  • We will do it right, the first time