Serving the New Jersey Shore from Sandy Hook to Cape May — Located at Holiday Harbor Marina, Waretown, NJ

Expert Marine Diesel Services In NJ

Diesel Re-power experts since 1999

Conveniently located at Holiday Harbor, Waretown New Jersey

Forked River Diesel and Generator is a family owned and operated business located at Holiday Harbor in Waretown, New Jersey. We proudly service the New Jersey Shore from Sandy Hook to Cape May and the surrounding areas.

Forked River Diesel and Generator is your number one source for marine diesel engine repower packages for both personal and commercial vessels. We are also a factory authorized service center for Volvo, Yanmar, Cummins, Westerbeke, Kohler, and Onan

Marine Diesel Services

At Forked River Diesel & Generator, we service, repair, sell, and install a wide range of marine diesel engines and generators—whether onboard your vessel or for remote backup power applications.

Local, Professional Service

Proudly serving Waretown and the Jersey Shore area with honest, experienced diesel technicians.

Diesel Expertise You Can Trust

Skilled in all aspects of diesel repair, maintenance, and repower for marine and land-based engines.

Over 25 Years of Trusted Service

Helping boat owners protect their investment with reliable diesel and generator service backed by decades of experience

Diesel Services

Marine Diesel Repower

We are re-power specialists, selling and install both new and used diesel engines for vessels of all sizes.

Marine Diesel Maintenance

Regular preventative maintenance is the key to your marine diesel motor performing correctly.

Marine Diesel Repairs

We will get you back on the water fast with repairs performed by factory trained techs using OEM parts.

Diesel Generators

We service and install both marine and standby/backup diesel generator systems on land and water.

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Complete Support

01

Diagnostics

We use advanced diagnostic tools and deep diesel expertise to quickly identify engine and generator issues—so you get fast answers and accurate repairs.

02

Repair

From minor fixes to major overhauls, we perform reliable diesel engine and generator repairs that restore performance and extend service life.

03

Maintenance

Prevent costly breakdowns with routine maintenance services designed to keep your diesel engines and generators running smoothly and efficiently.

Why You Should Choose Us

At Forked River Diesel & Generator, we’ve built a reputation on trust, expertise, and quality workmanship. Family-owned and proudly serving the New Jersey Shore from Sandy Hook to Cape May, we deliver professional marine diesel services with a commitment to getting the job done right.

As factory-authorized service providers for leading brands like Volvo, Cummins, Yanmar, and Westerbeke, we offer diagnostics, repairs, repower packages, and generator support tailored to both recreational and commercial vessels. Our experienced technicians and OEM parts ensure your equipment runs reliably—on the water or on standby.

What Our Clients Say

Dee Coope

Forked River Diesel-Generator provided the necessary work to my fuel tanks and propellers. They worked efficiently and quickly to get me back on my journey. Deb was there to answer my many questions, or find the answer, which I really appreciated. Their friendly attitude made the whole experience pleasant. I've added them to my favorites and would stop in again if I'm ever in the area!

John Moran

The expertise, responsiveness and quality of work has exceeded my expectations over the past 15 years that I have used Forked River Diesel and Generator. On more than one occasion, they responded immediately and serviced my boat at its location at my dock. The entire crew is dedicated to quality work and an amazing customer experience. I wouldn’t let any other company service my boat.

brian shortino

Forked River Diesel-Generator provided outstanding service. Top 3 things I loved: 1) Expert diesel engine repair that gave me confidence 2) Affordable pricing that fit my budget 3) Prompt and convenient mobile diesel repair that saved me time. The staff were professional and courteous throughout.

Scrappy p

John, Debbie, Jake, and the rest of the gang took care of us when our boat was acting up. Our research vessel was having fuel issues in the middle of an important 4-day trip, and they took care of us immediately. It reminded me of service you might find 30 years ago; good folks, a personal small-town feel, and all the diesel techs there were sharp. John reminds me of that character Cooter from Dukes of Hazard. Smart, personable, and reliable. Can’t wait to bring them my entire fleet!

praga vodka

in 2014 my TOPAZ 32 ' OFFSHORE FEVER ' was ready to go to bahamas . valve dropped . engine replacement needed. i had to go to china for business. FORKED RIVER DIESEL AND GEN. was recommended to me and i had nothing but hopes. JOHN LANE sent me dozens of pictures while i was away. he changed both engines in a week .cant ask for better. in 2021 my OCEAN 50 SPORT ' OFFSHORE FEVER....generator died ....Big COVID TIME and no generator to be found .... JOHN found one in Tennessee. he put in airplane to nj . i brought my boat there . 5 days all in all good and running again with whole fishing season in front of me. cant ask for better. in 2023 i need starboard engine repair / overhaul.... well ....take a wild guess where am i gonna go and who is going to the job !!! FORKED RIVER DIESEL AND GENERATOR JOHN LANE " DIESEL PROFESSOR ' regards, DR. VODKA

Ryan Holloway

John is very knowledgeable and an expert at his profession!!!

Better Attitude

John and Deb have been taking care of my boat for 4 years. They have done quality work season after season and have been fairly priced. They have come through with parts when no one else could and they have made offsite visits when we had a breakdown mid-season. They are nice people to work with and I trust their work.