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Kenn's Transmission

"Celebrating 61 Years Family Owned and Operated!"

About Us

Kenn's Transmission in Marshalltown, IA has been a trusted leader in transmission repair and automotive service since 1958, proudly serving drivers throughout Marshall town and surrounding counties. With decades of hands-on experience, our team is known for precision workmanship, honest service, and a commitment to getting the job done right.

We specialize in expert in-house transmission rebuilds, backed by the skill and equipment needed to diagnose and repair even the most complex transmission issues. In addition to our transmission expertise, we provide a full range of automotive services to keep your vehicle running safely and reliably.

Every transmission repair comes with a 1-year, 12,000-mile warranty, and extended coverage options are available for added peace of mind. Our goal is to deliver dependable service you can trust—whether you’re facing a major repair or routine maintenance.

For reliable, experienced transmission care, visit Kenn's Transmission in Marshalltown and see why our shop has been a local favorite for more than 65 years.

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

Marshall County, IA | Tama County, IA | Marshalltown, IA | Grinnell, IA | Newton, IA | Hardin County, IA

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What We Offer

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Testimonials

On 3/27/2026 Ben Rebik had this to say:
I brought my car into the shop for a horrendous sound coming from some part of the drivetrain. Kenn’s found the problem and fixed the car inside the timeframe given to me. They even kept the old part to show me where the noise was coming from and what part had failed. Excellent work

On 3/16/2026 Darrell Bartlett had this to say:
DJ is very easy to deal with and fair. Had him rebuild a 96 Ford F250 transmission better than OEM specs. Work was done in a timely manner and communication was great. Highly recommend Kenn's Transmission.

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.

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

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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

⭐ Customer Review Spotlight ⭐
“I called in to ask questions about a transmission service, like when is it is recommended to perform this service and what it would 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!” 🚙✨
Thank you for trusting us with your vehicle—we appreciate every customer who chooses Kenn’s!
#KennsTransmission #CustomerReview #FiveStarService #TransmissionExperts #ThankYou

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.

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