Tri State Engine Service
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Tri State Engine Service
Your Engine Solution Center
Repair, Rebuild or Replace
30+ Years of Experience in Parts and Service
Equipment Service Team
Tri State Engine provides expert engine rebuilding, including parts, service, and repair in the Davenport, IA and surrounding area. We offer sales and service the all the top brands of both gasoline and diesel engines, and we are authorized dealer of Duetz diesel engines. We also offer a convenient mobile service for those "difficult to deliver" projects. Tri State Engine Offers:
Engine rebuilding
Engine replacement
Engine repair
Engine sales - including brand names like Lombardini, Mitsubishi, Yanmar, Kubota, Hatz, and Perkins engines
Mobile service
Our equipment service team and friendly staff is here to answer any questions you may have about our products and services.
09/22/2026
Don't gamble your uptime on aftermarket parts. đźš«
We always recommend Vanguard® Genuine Parts for a reason. They are engineered specifically for your engine, which means you get an exact fit, zero guesswork, and the lasting performance your mower was designed for.
Stock up at Tri State Engine Service.
Downtime costs you money. That's why we stock Vanguard-powered equipment. The engines survive factory torture tests so they won't quit on your toughest job sites.
Stop in Tri State Engine Service for more info on Vanguard engines.
09/08/2026
Bogging down in thick grass? Not anymore.
The Briggs & Stratton® CXi Series V-Twin is available with EFI/ETC technology. What does that mean for your crew?
⚡ Smoother, instant power
â›˝ Better fuel efficiency
⚡ Consistent blade speed in the thickest turf
Never drop RPMs again.
Stop in Tri State Engine Service for more info on CXi engines.
09/01/2026
Thick, wet grass slowing down your crew? Cut the double-cuts. 🛑
The Vanguard BIG BLOCK™ V-Twin is built to maintain blade speed even in the heaviest turf. Get a clean cut on the first pass, every time.
Stop in Tri State Engine Service for more info Vanguard-powered ZTR's.
08/25/2026
Tired of pulling your mowers off the job every 100 hours? The Vanguard® Oil Guard™ system stretches those intervals to up to 500 hours. Plus, you'll save about 60% on maintenance costs*.
Stop in Tri State Engine Service for more info on Vanguard Oil Guard.
*Per season, per unit on oil maintenance.
08/18/2026
Dust, dirt, and clippings slowing you down?
The Briggs & Stratton® CXi Series V-Twin engines are built for high-debris conditions. Thanks to a patented 5-Step Debris Management System, your crew stays out cutting instead of stopping to clean.
Stop in Tri State Engine Service for more info on Briggs & Stratton engines.
08/11/2026
Big jobs call for BIG BLOCK power.
Vanguard® BIG BLOCK™ V-Twin engines deliver the muscle and durability commercial crews depend on.
Stop in Tri State Engine Service for more information.
08/04/2026
Steep ditches and heavily sloped properties can be tough on standard engines because the oil shifts, causing poor lubrication. The Vanguard® Oil Guard™ system fixes this with a unique dry sump design. It helps your engine stays fully lubricated and protected up to 45 degrees. Stop in Tri State Engine Service for more info on Vanguard engines.
You don't have time for equipment that quits.
That’s why we stock mowers powered by Vanguard. They’re laser-scanning engine parts down to the microscopic level before they ever hit our shop floor. For your crew, that means reliable performance day in and day out.
Stop in Tri State Engine Service to see the precision yourself.
07/21/2026
Thick, wet grass can bog down your mowers and ruin your cut speed. A Briggs & Stratton® CXi V-Twin with optional EFI powers right through without missing a beat. You get consistent, reliable power when you need it most.
Stop in Tri State Engine Service to see our CXi-powered mowers.
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Contact the business
Telephone
Address
3139 W 73rd Street
Davenport, IA
52806
Opening Hours
| Monday | 8am - 4:30pm |
| Tuesday | 8am - 4:30pm |
| Wednesday | 8am - 4:30pm |
| Thursday | 8am - 4:30pm |
| Friday | 8am - 4:30pm |
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