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Kenn's Transmission

"Celebrating 61 Years Family Owned and Operated!"

About Us

Kenn's Transmission, located in Marshalltown, IA, has been a trusted name in auto repair since 1958, proudly serving Marshall and Tama counties. We specialize in expert in-house transmission rebuilds and a full range of automotive services. With every repair, we offer a 1-year, 12,000-mile warranty—and additional coverage options are available upon request—giving you confidence and peace of mind. For reliable transmission service, visit Kenn's Transmission in Marshalltown today.

Our Story

For over six decades, Kenn’s Transmission has been Marshalltown’s trusted name in transmission repair and maintenance. Founded in 1958 by DJ’s grandfather, this family-owned business has been passed down through generations, with DJ now fully taking the reins. Having grown up in the shop and learned from both his grandfather and father, DJ continues the tradition of expert craftsmanship, customer-first service, and unmatched technical skill.

At Kenn’s Transmission, we specialize in all things transmission. While other shops may dabble in a bit of everything, we focus solely on transmissions, making us the go-to experts in the area. Our team is highly skilled in in-house transmission rebuilds, saving customers money with our expert rebuilding process. We offer transmission fluid changes and maintenance to keep vehicles running smoothly, as well as all driveline work, including transfer cases, differentials, and U-joint replacements. Our services also include flywheel repair and replacement, electrical diagnostics to identify issues quickly and accurately, clutch replacement and repair for a smoother, more efficient ride, CVT transmission replacement for modern vehicles, and wheel bearing and CV axle shaft replacement to keep cars safe on the road.

We service both foreign and domestic vehicles and work with all extended warranty coverages to make repairs as hassle-free as possible. Plus, with our key drop service, we offer added convenience for our busy customers.

Our priority is getting you back on the road safely. Our knowledgeable team ensures that your car receives the best care possible, with quick and thorough service. Customer satisfaction is at the heart of everything we do. Not all transmission problems require a complete rebuild or replacement. Our team carefully diagnoses each issue to determine the best solution, saving you time and money. Instead of costly replacements, we offer affordable, high-quality rebuilds, using top-tier technology to make your transmission better than new.

Located just two blocks east of Hy-Vee, Kenn’s Transmission is your local transmission expert dedicated to reliable, efficient, and honest service. DJ and his team are committed to ensuring that every customer experiences straightforward communication, quality workmanship, and a seamless repair process.

When it comes to transmission work, trust the specialists. Call or visit Kenn’s Transmission today and let us keep your vehicle running at its best.

Areas Served

Our Professional Associations

Marshalltown Chamber of Commerce

What We Offer

Our Specialties include:

Transmissions Rebuilds and Repairs
Transfer Case
Differential Repair

Our Services include:

In-House Transmission Rebuilds
Transmission Fluid Changes
All Driveline Work
Transfer Case
Differentials
Repair
Rebuild
Electrical Diagnostics
Key Drop Available
Flywheel Repair
Flywheel Replacement
We Work With All Extended Warranty Coverages
CVT Transmission Replacement
Transmission Maintenance
Foreign and Domestic
Clutch Replacement and Repair
U-joint replacement
Wheel bearing replacement
CV Axel Shafts

Our Brands include:

BorgWarner, Raybestos, Trans Go, Sonic

Testimonials

On 2/17/2026 Jeff Rankin had this to say:
Excellent service done fast and efficient at a great price. Cheaper than expected. Thanks DJ

On 2/17/2026 James Forsythe had this to say:
This is the second transmission I have had to have rebuilt and I choose Ken's a second time because of the great service and knowledge they have. They are very timely in their service and explain problems thoroughly and are great people to work with. I would recommend their services to anyone having transmission issues because they go above and beyond.

On 12/10/2025 A. P. had this to say:
Great, fast and affordable service. Truck was towed to them and they had the issue diagnosed and fixed quickly.

On 11/17/2025 Barbara H. had this to say:
Transmission fluid change and filter. Knowledgeable service people. Timely work. Reasonable cost. You won't find a better transmission shop within 60 miles.

On 11/13/2025 Teresa Arrowood had this to say:
I called in to ask questions about a transmission service, like when is is recommended to perform this service and what would it entail and cost. The staff was very informative and gave me a range for how much it would cost me. When it was all said and done the cost was on the lower end. I was extremely impressed with their knowledge and courtesy. Will definitely be back.

Contact Us

Kenn's Transmission
306 E. Anson St. Marshalltown, IA 50158
Phone: (641) 752-2625
Email: kenns58@hotmail.com

Two Blocks East of Hy-Vee

Where To Find Us

Payment Types Accepted

Debit & Credit Cards, Checks, Apple Pay, Android Pay, Google Pay

Our Hours

Holiday Hours May Vary. Please Call For Details.

Monday: 8:00 AM - 5:00 PM
Tuesday: 8:00 AM - 5:00 PM
Wednesday: 8:00 AM - 5:00 PM
Thursday: 8:00 AM - 5:00 PM
Friday: 8:00 AM - 5:00 PM

News

Have we serviced your vehicle recently? ⭐🚘 We’d love to hear about your experience at Kenn’s Transmission Service! Your reviews help others find a shop they can trust and allow us to continue delivering honest, dependable work. If you’ve been happy with your service, please consider leaving us a review—your feedback truly means a lot to our team.
#KennsTransmission #LeaveAReview #CustomerFeedback #TrustedAutoShop #SupportLocal

FAQ

How long will it take to complete the job?

The completion time depends on the specific job, generally ranging from a day to a week. We'll give you a more accurate estimate after assessing the issue.

Where do I leave my keys when dropping off my vehicle after hours?

Please use our drop box located next to the front door for a convenient and secure key drop-off.

What kind of warranty do you provide on your services?

We offer a standard warranty of 12 months or 12,000 miles. Additionally, we have a range of other warranty options available to suit your needs.

How often should I change my transmission fluid?

Most vehicles need transmission fluid replaced every 30,000–60,000 miles, but this varies by manufacturer, driving style, and towing/hauling habits. We can check your fluid condition during your visit.

What’s the difference between a transmission repair, rebuild, and replacement?

Repair: Fixing or replacing only the damaged components.
Rebuild: Disassembling the transmission, replacing worn or failed parts, and reassembling it to factory specifications.
Replacement: Installing a new, remanufactured, or used transmission when repairs aren’t possible or cost‑effective.

How do I know if my transmission needs repair?

Common signs include slipping gears, delayed shifting, grinding noises, fluid leaks, a burning smell, or the check‑engine light turning on. If you notice any of these symptoms, it’s best to have the transmission inspected quickly to prevent further damage.