Diamond Marine Service

about us


Only located moments from Lake Mead.  So, you can easily visit us to get what you need and get back on the water!                                                    


Diamond Marine Service was established in 2003 and has been serving local Boulder city residents, and Southern Nevada.  We take care of fellow boaters as far as Arizona and California, even if they are just passing through. Our quality work, attention to detail, great pricing and 20 years’ experience are our winning combo for the best customer experience.                                     

DMS has been family owned and operated since 2012. Our family is committed to improving boat repair and challenges the level of detail in our repairs and customer communication, to that of other shops.  If you want a shop that is thorough, honest and convenient; Look no further, because DMS wants to service your boating needs.

Our commitment goes further than just initial visits or service.  We want a working relationship with you and your boating wants and needs.  We want the opportunity to treat your boat as our own and ensure you are always ready to be on the water.  We offer an array of services to take care of all needs.                                                          


About Jeff Willoby

28 advantage 1.jpg

Jeff Willoby’s passion for Boats & Racing started when he was younger.  Jeff’s father owned a boat shop named Lake Shore Marine. His father would keep him busy Sweeping floors, cleaning boats and even doing oil changes. He has been around boats all his life. As Jeff got older, he began taking the thrill of speed to the next level. 

Jeff started getting involved in Super Stock and Cracker Box Racing.  At age 15 he was the Driver behind the wheel.  Not only did he display his skills on the water, but his inventive methods pushed him to always get more out of his boats.  


With all Jeff’s experience and years of building motors, as he got older, his reputation grew for making boats go faster.  Today, Jeff makes the possible happen with an array of customers boats.  

Click here to see whats happening with our Professional Race Team - visit our social media to find out more Pro42



Our Services

Ensure your boat is ready for any adventure at any time you seek it.  Diamond Marine Service wants to ensure your vessel is problem free and safe for all thrills.  We service all makes and models of Stern Drive, Outboard, Inboard, V-Drive, and Jet Drive Systems.  We also offer other services such as:



fluid change



engine tune up

boat checks


boat launch

drive service


boat detailing 


sea pump service


custom builds

& much more



Las Vegas marine shop for propeller, and welding repairs on your boat or personal watercraft.

Check your propeller once a year for defects, deterioration, damage or bends. Doing so may prevent costly future repairs. Never run a boat with a damaged prop.

Notice something wrong with your prop? Visit or speak with the pros today.


35 years specializing in high performance engine builds and repair for drag racing, stock cars, street cars, sand cars, boats, imports and restorations. Dedicated to providing customers with precise manual machining and quality high performance engine work.


Need Towing?

Expert Towing Service-Brought to you by Olmstead Towing

Care and Caution with every vehicle. You are never on the road alone.


Need Mobile Mechanical work or want to customize your RV? Give our friends a call and help will be on the way!

“Busted Knuckle Mobile Mechanics LLC is a family owned and operated business here to serve the greater Las Vegas area, and Boulder City. We pride ourselves on being the honest mechanics. There is no job or repair to big or small, we also do a selection of aftermarket/ custom work or accesory instalation. 24 hrs 7 days a week we are here to keep you going.”

-Busted Knuckle


Diamond MArine content

you can find other service content, Our media, and other helpful tools to keep you informed before planning your weekend and time on the water.

Plan Your adventure today!

Water sports equipment rental service in the Clark County, Nevada. Located right off boulder highway between sunset & warm springs.

Rent Jet skis, Boats, Can Am Spyder, Kayaks, paddle Boards, Toy Haulers, and ATV’s.

Your thrill is only a call & click away!


What is happening now at Lake Mead ?  Visit link to the right to find out more about Weather, Boating, Places to go, Marinas, Directions & Transportation, Lodging, Fishing and much more.

Enter Lake Mead National Recreation Service site

Enter Lake Mead National Recreation Service site

Going to the other side of the lake? No problem, Check out the weather and plan your weekend ahead off time.

DMS News


Follow our Youtube Channel

28 Advantage Test Run Custom built drive Blueprint Bravo Cyro gears polished shafts 26P Prop Cleaned injectors Improved WOT 65mph to 73mph on water Bring your boat to the Diamond💎 We can make them go faster! Visit our Website and Call Us Today. https://www.diamondmarineservice.com 702-294-1811




We know how you feel about having your boat taken care of.  We ensure that when your boat is in the hands of Diamond Marine Service, our dedicated mechanics will provide the highest level of service and dependable maintenance that you will be delighted with.  

We offer Special Discounts for First time customers, and veterans of U.S. Armed forces, as well as First responders. 

 If you are tired of not getting quality service or are unsatisfied with work you have had performed, we appreciate the opportunity to work with you and your boat.  Contact our family and staff for further information on estimates or appointments. We stand by all our work and will have your boat running in excellent condition.  

Come visit our Full-Service Boat shop in Boulder City, Nevada.  We service boaters throughout Southern Nevada, Southern California and Arizona.


701 Wells Rd. Suite D Boulder City, Nevada 89005


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