Service & Parts
Boat Service & Repair in Oklahoma and Texas
Certified marine technicians at seven locations across Oklahoma and Texas. We service all makes and models — whether you bought the boat from us or not.
Keeping a boat running well is what determines how much you actually use it. A boat that starts every time, holds its value, and doesn't surprise you in July is the result of consistent service — and that's what our Service & Parts departments exist to do.
Nichols Marine has been family-owned since 1972. Across our seven locations we maintain, diagnose, repair, winterize, and commission boats of every make, for owners across Green Country, central Oklahoma, Grand Lake, southeast Oklahoma, East Texas, and the DFW Metroplex.
Certified by Every Major Marine Engine Manufacturer
Our technicians hold factory certifications from:
That coverage means whatever is powering your boat, we're credentialed to work on it — including warranty service. Factory certification isn't just a badge. It means our techs are trained on current diagnostic procedures, have access to manufacturer technical resources, and can perform warranty repairs an independent shop can't.
Services We Provide
Winterization
Protecting your engine, cooling system, and fuel system before the first hard freeze is the most important service of the year in Oklahoma and Texas. A cracked block from skipped winterization is frequently a four- or five-figure repair, and it's generally not covered under warranty.
We handle full winterization at all seven locations — cooling system drain and antifreeze, fogging, lower unit service, oil and filter change, and fuel system treatment. Not sure when to schedule? Read our guide on when to winterize your boat in Oklahoma and Texas, or see our winterization checklist for what you can handle yourself versus what's worth a technician.
Winterization Details & Scheduling →Spring Commissioning
De-winterizing, battery installation and testing, engine inspection, safety equipment check, and a full systems run-through before your first launch. Booking early matters — spring is the busiest window of the year in every service department in the region.
Routine Maintenance
Oil and filter changes, lower unit service, impeller replacement, spark plugs, belts, fluid checks, and scheduled inspections. We recommend service at least once per season or every 100 hours of operation, whichever comes first.
Engine Diagnostics & Repair
Hard starting, overheating, loss of power, rough idle, alarms, and anything else that isn't behaving right. Our techs use manufacturer diagnostic equipment to find the actual cause rather than replacing parts and hoping.
Warranty Service
As a certified dealer for Mercury, MerCruiser, Yamaha, Ilmor, and Volvo Penta, we perform factory warranty work in-house. You don't have to ship the boat somewhere else or wait on an out-of-area shop.
Fiberglass & Gelcoat Repair
Dock rash, scratches, stress cracks, hail damage, and cosmetic restoration. Oklahoma hail in particular puts a lot of boats through our gelcoat bays every year.
Electronics & Accessory Installation
Garmin, SIMRAD, and Lowrance units, trolling motors, stereo and audio upgrades, tower speakers, lighting, ski tow bars, and custom rigging. Done properly and wired correctly the first time.
Trailer Service
Bearings, brakes, lights, wiring, tires, and winches. The trailer is the part everyone ignores until it strands them on the way to the ramp.
Parts & Accessories
Genuine OEM parts for all the brands we carry, plus quality aftermarket options, props, safety equipment, covers, and accessories. If we don't have it on the shelf, we can order it.
We Service All Makes — Not Just What We Sell
This comes up constantly, so to be clear: you do not have to have bought your boat from Nichols Marine for us to service it. Our bays are open to any boat owner.
We have deep experience with the brands we carry — Bennington, Chaparral, MasterCraft, Vexus, Robalo, Caymas, and Evotti — but our certifications are on the engines, and those engines power most of the boats on the water. If it runs a Mercury, MerCruiser, Yamaha, Ilmor, or Volvo Penta, we can service it.
Seven Service Departments Across Oklahoma and Texas
Every location has a full service department. Call the one nearest you to schedule:
Nichols Marine Tulsa
6556 E 21st St, Tulsa, OK 74129
Serving Green Country, Keystone Lake, Skiatook Lake
Nichols Marine Norman
1700 Ann Branden Blvd, Norman, OK 73071
Serving the OKC metro and Lake Thunderbird
Nichols Marine McAlester
2208 S Main St, McAlester, OK 74501
Serving southeast Oklahoma and Lake Eufaula
Nichols Marine Longview
5008 Judson Road, Longview, TX 75605
Serving East Texas and Lake O' the Pines
Schedule Service
Use the form below to request an appointment at any of our seven locations, or call the store directly. During peak season — spring commissioning and fall winterization — we recommend booking a few weeks out.
Frequently Asked Questions
Do you service boats I didn't buy from Nichols Marine?
Yes. Our service departments are open to all boat owners regardless of where the boat was purchased. As long as we're certified for your engine — Mercury, MerCruiser, Yamaha, Ilmor, or Volvo Penta — we can service it.
How often should I service my boat?
At least once per season or every 100 hours of operation, whichever comes first. Most Oklahoma and Texas owners schedule service twice a year: winterization in the fall and commissioning in the spring.
When should I winterize my boat?
Our winterization service page has full details and scheduling, and our timing guide breaks it down by region.Do I need an appointment?
We recommend it, especially during spring and fall when service departments across the region are at capacity. Call your nearest location or use the form above. Walk-ins are accommodated when we can.
Can you perform warranty work?
Yes. We're a certified dealer for Mercury Outboard, MerCruiser, Yamaha, Ilmor, and Volvo Penta, so factory warranty repairs are handled in-house.
Do you sell parts to customers doing their own work?
We do. Our parts departments stock genuine OEM parts for the brands we carry along with quality aftermarket options, and we can order what we don't have on hand.
Why Boat Owners Choose Our Service Departments
- Factory certifications from Mercury Outboard, MerCruiser, Yamaha, Ilmor, and Volvo Penta
- Seven locations across Oklahoma and Texas — service close to your lake
- All makes and models welcome, purchased anywhere
- In-house factory warranty work
- Genuine OEM parts and accessories
- Family-owned and operated since 1972 — third generation
Have other questions about ownership, financing, or trade-ins? Our boat buying and ownership FAQ covers the topics we get asked about most. Thinking about upgrading instead of repairing? Check your trade-in value or browse current inventory.
Call your nearest Nichols Marine service department or use the form above to schedule.