Boat Repair Florida KeysMarathon, Islamorada and Key Largo
Certified outboard and inboard repair, marine electrical, fiberglass restoration, and scheduled maintenance built for saltwater, offshore, and backcountry boaters throughout the Florida Keys.
Certified Service For All Major Outboard Brands
Marine Service
Trusted Boat Repair Throughout the Florida Keys
The Florida Keys are one of the most demanding boating environments anywhere in the world. You are running in saltwater every single day. Your engine, your electrical systems, your hull, and your hardware all take a beating that freshwater boaters simply never experience. When something goes wrong out here, you need someone who truly understands what saltwater does to a marine engine.
Outboard Service Express has a dedicated office right in Summerland Key at 24838 Overseas Hwy, putting us squarely in the heart of the Middle Keys. We serve boat owners from Key Largo and Islamorada in the Upper Keys all the way through Marathon, Big Pine Key, and the Lower Keys. Whether your boat lives at a marina slip, a private dock, or on a trailer in your yard, we can get a technician to you.
We are certified in Yamaha, Mercury, Honda, Suzuki, and Tohatsu outboards and we carry OEM parts for the most common saltwater repairs. Every job is photographed and documented so you always have a full record of what was done and what to watch for next time.
The Keys Are Hard on Boats
There is no boating environment tougher on marine equipment than the Florida Keys. Salt air corrodes electrical connections, clogs fuel systems, and attacks anodes within months. The sun is relentless on fiberglass and upholstery. The shallow flats demand precise trim and impeller performance. And the offshore runs to the reef or the Gulf put serious hours on outboard motors in a short amount of time.
We know exactly what Islamorada tarpon guides, Marathon offshore captains, Key Largo dive boat operators, and everyday Keys boat owners face. Saltwater maintenance is not the same as freshwater maintenance. The intervals are shorter, the inspection list is longer, and the consequences of skipping service are more severe. Our maintenance plans are built specifically around Keys boating conditions.
Complete Marine Repair for Keys Boat Owners
From pre-season tune-ups before tarpon season to emergency diagnostics mid-trip, we handle every service that saltwater boat owners in the Florida Keys depend on.
Outboard Motor Repair
Saltwater diagnostics, full tune-ups, lower unit rebuilds, impeller replacement, fuel system cleaning, and corrosion treatment. We service the high-horsepower outboards that Keys anglers and offshore boaters depend on. Every job is done right with OEM parts.
Learn More
Inboard Engine Repair
Cooling system overhauls, raw water pump service, heat exchanger maintenance, and full inboard engine repairs for center consoles, sportfishers, and cruisers running Keys waters. Saltwater cooling systems need more attention than most people realize.
Learn More
Marine Electrical and Electronics
Salt air is the number one enemy of marine wiring. We handle full electrical inspections, corrosion treatment, rewires, VHF radio installation, GPS and chartplotter setup, fishfinders, bilge pump systems, and complete electronics installations for Keys boats.
Learn More
Oil Changes and Saltwater Service
Factory oil and filter changes, gear lube service, zinc anode replacement, impeller service, and full engine flushes after saltwater use. We follow manufacturer intervals with the shorter cycles that Keys boating conditions demand.
View Packages
Fiberglass and Gelcoat Repair
Hull osmotic blister treatment, dock and ramp damage repair, gelcoat color matching, and Awlgrip refinishing for Keys boats. Sun exposure and saltwater are relentless on fiberglass. We restore and protect your hull to stop further damage before it starts.
Learn More
Marine Upholstery
Marine-grade upholstery engineered to withstand the Keys sun, salt spray, and UV intensity that destroys standard vinyl within a season or two. We do custom seat replacements, full interior refits, and sun shade installations for all types of saltwater boats.
Learn MoreSaltwater Boating Demands Consistent Maintenance
A freshwater boat can sit for a month with minimal consequences. A saltwater boat cannot. Our Express Care Club was built for boat owners who run in the Keys and need their equipment protected and ready at all times.
Built for Saltwater Conditions
Our inspections specifically target the corrosion, anode wear, and electrical issues that saltwater environments create. We catch problems before a trip out to the reef turns into a tow back to the dock.
Fishing Season Ready
Members get priority scheduling. When tarpon season opens or the sailfish bite turns on offshore, you are not waiting two weeks to get your boat serviced before the best fishing of the year.
Documented Service History
Every visit is recorded with photos and notes. Your warranty stays valid, your service records stay organized, and your boat’s resale value is protected with a clean documented history.
Prevent Expensive Offshore Failures
A breakdown offshore in the Keys is not just expensive. It can be dangerous. Consistent maintenance is the only way to prevent it and our plan makes that affordable and automatic.
- Priority scheduling for any repairs
- 15% off all detailing services
- 10% off all scheduled service packages
- One FREE system check per year
- Exclusive member-only seasonal offers
No contracts. Cancel anytime.
Marine Service
The Mechanic That Knows the Keys
We are not a shop that occasionally sees a saltwater boat. We are based right here in the Keys with decades of experience on Florida saltwater. We understand the environment, the demands, and what it takes to keep boats running reliably down here.
We Are Based Right in the Keys
Our Summerland Key office at 24838 Overseas Hwy puts us at the center of the Middle Keys. We are not driving three hours to get to you. We are already here, and we understand the unique conditions that Keys boat owners face every single day.
Saltwater Experience That Matters
Saltwater corrosion, anode failure, raw water pump wear, and biofouling are not things you learn from a textbook. We have been working on saltwater boats in Florida for over 35 years and we know exactly what to inspect, what to treat, and what to replace before it fails.
We Come to Your Dock or Marina
For most repairs in the Keys we come directly to your marina slip, private dock, or boatyard. You do not pull your boat out of the water and you do not lose a day of fishing to sit in a shop waiting room.
Honest Pricing Before Every Job
We give you a clear written quote before any work begins. What we quote is what you pay. No surprise charges when the bill arrives. That kind of transparency is rare in the Keys boating market and we take pride in it.
Covering the Full Length of the Florida Keys
From Key Largo at the top of the Upper Keys all the way through the Lower Keys, we serve boat owners at marinas, private docks, and boatyards throughout the full length of US 1.
What Florida Keys Boat Owners Say
My Yamaha threw a code the morning of a tarpon trip out of Islamorada. Called Outboard Service Express and they had a tech at my dock within hours. Found the issue, fixed it on the spot, and I made it out by noon. These guys genuinely understand what Keys fishing means to people.
Best marine mechanic we have found down here in the Middle Keys. They serviced our twin Mercurys at the dock in Marathon, documented everything with photos, and found a failing water pump before it became a real problem offshore. Signed up for their monthly plan right away.
Honest, professional, and they actually show up when they say they will. Had them rewire my entire console after a bad corrosion situation. Clean work, clear pricing, and they explained everything. Exactly what you want from a mechanic in the Keys.
Ready to Get Back on the Water?
Fill out the form and we will get back to you within 24 hours. Tell us where your boat is in the Keys and what it needs and we will get a technician scheduled fast.
Call or Text
(352) 408-0929Florida Keys Office
24838 Overseas Hwy
Summerland Key, FL 33042
Central Florida Shop
21242 Orange Ct, Mount Dora, FL 32757
Hours
Mon to Fri: 8am to 5pm. Sat: By Appointment
Request Boat Service in the Florida Keys
We respond within 24 hours, usually much faster.
Boat Repair Questions from the Keys
Answers to what we hear most from Florida Keys boat owners. Have something we did not cover? Give us a call directly.
(352) 408-0929Boat Repair in the Florida Keys
Outboard Service Express provides expert boat repair throughout the Florida Keys for offshore anglers, backcountry guides, recreational boaters, charter captains, and live-aboard sailors. With a dedicated office in Summerland Key and over 35 years of Florida marine experience, we are one of the few marine repair services truly built for saltwater and Keys boating conditions.
We service boats from Key Largo and Islamorada in the Upper Keys through Marathon, Duck Key, Big Pine Key, and the Lower Keys. Our certified technicians specialize in outboard motor repair, inboard engine service, marine electrical systems, fiberglass restoration, and scheduled saltwater maintenance for Yamaha, Mercury, Honda, Suzuki, and Tohatsu engines. We also handle complex multi-engine setups including twin and triple outboard configurations common on center consoles and sportfishers throughout the Keys.
Saltwater boating is uniquely demanding. Corrosion, anode wear, impeller failures, and electrical degradation happen faster in salt air than anywhere else. Our monthly Express Care Club membership starting at $99 keeps your boat on a consistent maintenance schedule specifically calibrated for Keys conditions, so the next breakdown happens to someone else’s boat and not yours.
We serve Keys boat owners at: Summerland Key, Marathon, Islamorada, Key Largo, Big Pine Key, Key West, Faro Blanco Marina, Hawks Cay Marina, Skipjack Marina, Plantation Yacht Harbor, and private docks and boatyards throughout Monroe County.
Call (352) 408-0929 or fill out the service form above. We respond within 24 hours and we keep the parts on hand to get most Keys boats fixed in a single visit.
Back on the Water Sooner Than You Think
Do not let a mechanical problem keep you off the reef, the flats, or the offshore grounds. Book your service today and we will take care of the rest.